Research Report

Question: You are a rigorous financial research analyst. Ground EVERY quantitative claim in data you actually pulled from the finance tools — never invent a price, multiple, or indicator. Answer the REQUEST below by:

1. Identifying the specific publicly-tradable assets (tickers) it concerns. When the request is open-ended (e.g. "top up-and-coming tech companies"), first find concrete candidates: use finance_data (action=search) to resolve names to tickers, and web search / the browser for qualitative discovery.
2. For EVERY ticker you discuss, pull real data with the finance tools:

• finance_data action=analyze — LIVE price, % returns, 52-week range position, and the indicator panel (RSI-14, MACD, SMA 50/200, VWMA-20/67, trend). Batch multiple tickers in one call.
• finance_data action=fundamentals — market cap, P/E & forward P/E, PEG, margins, revenue growth, analyst target & rating (use for valuation).
• finance_data action=quote source=pyth — fastest realtime spot price (esp. crypto) with a confidence band, when you need the very latest tick.
• finance_data action=liquidation — the VWMA-67 'true price' and leverage liquidation levels (great for crypto/timing context).
• finance_news — recent catalysts/sentiment (macro + per-ticker headlines).
• finance_insider — corporate insider (SEC Form 4) and, with scope=congress, political trades, to see informed-money flow. If scope=congress returns a browser_fallback (the free API was gated), follow it: use the browser tool on the given capitoltrades.com URL(s) and read the rendered trades table.

3. Writing a concise report: a short investment thesis for each asset (why it is interesting, grounded in the pulled price/fundamentals/news/insider data), then a summary table with columns: Ticker | Price | 1d% | 5d% | 20d% | RSI | P/E | Trend. Rank assets by thesis strength, cite notable news/insider signals, and clearly flag any ticker you could not fetch.

REQUEST: How did the US stock market perform today, including the major indices, the biggest movers, and what drove them?

Date: 2026-09-10T04:46:22.271204362+00:00

Coverage window: 2026-09-10 – 2026-09-10

Rounds: 1

Status: COMPLETE

Evidence: 121 claims · 50 sourced · 18 partial · 13 unsupported · 39 self-reported (no independent source) · 27 single-source

Executive Summary

As of 2026-09-10, there is no completed 2026-09-10 US session to report — and no 2026-09-10 US close exists in any source reachable. Every market-data pull terminates at the 2026-09-09 session: the last daily bar for every US instrument is stamped 2026-09-09 13:30:00, hourly bars stop at 15:30 ET and the finest (5-minute) bars at 15:55 ET on 2026-09-09, with no 2026-09-10 bar at any granularity. A fetched TipRanks page headed "Sep 10, 2026" was still counting down ("markets open in 8 hours 46 minutes"), and CNBC's live blog covering today's session leads with "Stock futures are little changed as traders brace for wholesale inflation report" — the August PPI was still pending at pull time. CNBC's dedicated 2026-09-10 live-blog URL returns HTTP 404.

So the honest answer splits in two: the last completed session (2026-09-09) was a third straight down day driven by $100+ oil and a long-end yield spike, and today's session (2026-09-10) is pre-open, set up around the 8:30 a.m. ET PPI print, with a pre-market decliner list already forming. Nothing below is presented as a 2026-09-10 close, because none exists.

The Last Completed Session — 2026-09-09 (major indices)

Source: finance_data action=analyze/quote, exchange-reported bars, last bar 2026-09-09 (⚠️ caret-prefixed symbols ^GSPC/^IXIC/^DJI/^RUT/^VIX returned "no data on any exchange"; exchange-native symbols resolved). Corroborated by CNBC's fetched live blog: "the major averages tumbled for a third day. The Dow lost just over 400 points, or 0.8%, while the S&P 500 fell 0.5%. The Nasdaq Composite declined 0.6%" (https://www.cnbc.com/2026/09/09/stock-market-today-live-updates.html). AP's 9/9 index wrap corroborates (−0.5% / −0.8% / −0.6%) (https://apnews.com/article/wall-street-stocks-dow-nasdaq-31c966aef214740b8fec71e399a051b8, search snippet, not fetched).

What Drove It

Sector tape (2026-09-09 close, finance_data quote): Energy was the only gainer — XLE +0.83% (20d +7.19%); Tech flat (XLK 0.00%); the laggards were Industrials XLI −1.51%, Consumer Discretionary XLY −1.34%, Utilities XLU −1.17%, Staples XLP −1.15%, Real Estate XLRE −1.12%, Materials XLB −1.06%, Comm. Services XLC −0.62%, Financials XLF −0.42%, Health Care XLV −0.33%.

Verified single-name moves for 2026-09-09 (finance_data): AMD +3.04% to 521.10 (RSI-14 78.3, 5-day +13.4%, 91.5% of 52-wk range — the standout), NVDA −0.91% to 223.67, MSFT −0.47% to 491.65, AAPL −0.28% to 315.34, TSLA −0.10% to 367.81.

What Is Actually True on 2026-09-10 (in-window)

• Macro calendar: August PPI at 8:30 a.m. ET today, Dow Jones consensus +0.3% m/m, +5.3% y/y; weekly jobless claims and August existing home sales also due this morning; CPI follows Friday 9/11 (consensus +0.4% m/m, +3.4% y/y) — CNBC live blog (fetched) and the BLS release schedule page (https://www.bls.gov/pPI/).
• Pre-market futures (TipRanks page headed "Stock Indexes – Sep 10, 2026", https://www.tipranks.com/markets/pre-market/gainers): US 500 futures 7,722.00, +0.11%; US 30 futures 52,999.00, +0.26%; US Tech 100 futures 29,727.00, −0.06%. CNBC's Wednesday-evening read: Dow futures +54 pts (+0.1%), S&P futures +0.04%, Nasdaq-100 marginally lower.
• Today's early global tape: Asia lower — Nikkei 64,805.45, −0.52%; Kospi 6,999.21, −0.74%; ASX 200 8,783.40, −1.44%; Hang Seng 24,949.52, −1.29% (CNBC, Sept 10 entries). Europe on 2026-09-10: DAX −1.66%, FTSE 100 −1.31% (aggregator page dated September 10, 2026, https://www.whyisstock.com/markets — no granular timestamp; its US rows reproduce Sept 9 closes and are not usable).
• Rates today: 10-yr 4.847% (+1bp), 30-yr 5.298% (+1bp) (CNBC, Sept 10).
• Today's dated headline flow: Strait of Hormuz commodity-vessel crossings below 10 vs a ~14 10-day average (FinancialJuice, 2026-09-10 03:05 UTC); 10-yr China–US yield gap at a record 316.7bp (01:50 UTC) — finance_news.

Pre-market movers, 2026-09-10 (pre-market % moves only, not closes; https://premarketprice.com/premarket-movers, page dated September 10, 2026):

Per-name catalysts for these pre-market moves were not individually verified, and no 2026-09-10 closing mover list exists. Watch AMD: it closed 2026-09-09 at an RSI of 78.3 after a +13.4% five-day run.

Requested Summary Table

All rows are 2026-09-09 closes — the most recent data that exists. No 2026-09-10 row can be produced.

Analysis

The 2026-09-09 tape was a clean macro-driven risk-off move, not a company-specific one: energy was the only sector that rose while energy-linked CPI risk (Brent >$100) went straight into long-end yields at two-decade highs, which is what hit rate-sensitive small caps (IWM −1.37%, RUT −1.32%) and equal-weight breadth (RSP −0.96%) hardest. The Treasury's $6bn buyback — three times the usual size, executed today — was the policy response and it did not stop the selling.

Today's setup is a coin-flip on the PPI print: futures are flat (S&P +0.11% pre-market), the long end is still drifting higher (+1bp at both 10s and 30s), and the pre-market movers are idiosyncratic (VRT −9.67%, CMCSA −6.38% against MRVL +3.94%, IBM +2.86%) rather than a broad risk signal. If PPI lands hot versus +0.3% m/m / +5.3% y/y, the same transmission chain — oil → yields → small caps and equal weight — is the one to watch; CPI tomorrow at +0.4% m/m / +3.4% y/y consensus is the bigger event.

One source trap worth flagging: stockmarketwatch.com/indices/dowjones/today is headlined "Sep 10, 2026" and claims the Dow closed at 52,380.66 "today" on a hot CPI report. Its component prices are identical to 2026-09-09 closes, CPI is scheduled for Sept 11, and its numbers contradict its own tables — it is a mislabeled 2026-09-09 narrative and is excluded here.

Risks & Open Questions

• Not fetched (flagged, not substituted): 2026-09-10 index closes and 1d% for S&P 500 / Nasdaq Composite / Dow / Russell 2000; 2026-09-10 sector returns; 2026-09-10 advance/decline breadth, new highs/lows; 2026-09-10 VIX/after-hours tape. None exists in any reachable source as of the pulls.
• Tool gaps: pyth realtime spot feed returned HTTP 401; ES=F/NQ=F futures and all caret-prefixed index symbols returned no data, so index levels rest on exchange-native symbols (SPX/IXIC/DJI/RUT/VIX) plus ETF proxies. Index RSI differed across two pulls for SPX (63.6 on a 30-bar window vs 47.5 on 250 bars), so RSI above is quoted only from the ETF proxies.
• The August PPI print itself is unverified — the last check still framed it as pending; no figure is asserted here.
• Minor feed discrepancy: TipRanks showed the 2026-09-09 Dow at 52,380.66 vs the finance feed's 52,386.25 (~5.6 pts); both agree directionally (−0.77%).
• What to pull at the close: re-run finance_data analyze on SPX, IXIC, DJI, RUT, VIX after 4:00 p.m. ET for the actual 2026-09-10 answer, then a post-close recap for mover catalysts.

Sources: https://www.cnbc.com/2026/09/09/stock-market-today-live-updates.html · https://www.cnbc.com/2026/09/10/stock-market-today-live-updates.html (404) · https://www.bls.gov/pPI/ · https://www.tipranks.com/markets/pre-market/gainers · https://premarketprice.com/premarket-movers · https://www.whyisstock.com/markets · https://stockanalysis.com/etf/spy/ · https://apnews.com/article/wall-street-stocks-dow-nasdaq-31c966aef214740b8fec71e399a051b8 · https://www.fxempire.com/forecasts/article/sp500-bessent-buyback-fails-to-halt-selling-as-oil-keeps-fed-risk-high-1626186 · https://stockmarketwatch.com/indices/dowjones/today (rejected) · https://vittarthi.com/markets/us (JS-rendered, no data) · finance_data analyze/quote/history (last_bar 2026-09-09) · finance_news (items 2026-09-10 01:37–04:30 UTC).

Claims without independent support

These statements appear in the narrative above but are not backed by text retrieved from a source. SELF-REPORTED means the only thing asserting it is the swarm's own worker output — the narrative was written from that output, so it corroborates nothing. Treat all of these as unverified.

• [SELF-REPORTED] CNBC's dedicated 2026-09-10 live-blog URL returns HTTP 404.
• [SELF-REPORTED] Nothing below is presented as a 2026-09-10 close, because none exists.
• [UNSUPPORTED] 1d %
• [UNSUPPORTED] 5d %
• [SELF-REPORTED] 7,636.36
• [SELF-REPORTED] +0.06%
• [UNSUPPORTED] −1.19%
• [SELF-REPORTED] 26,253.34
• [UNSUPPORTED] +0.59%
• [UNSUPPORTED] −0.73%
• [SELF-REPORTED] 85.6%
• [SELF-REPORTED] 52,386.25
• [UNSUPPORTED] −2.62%
• [SELF-REPORTED] 75.6%
• [SELF-REPORTED] 2,921.23
• [UNSUPPORTED] −1.32%
• [SELF-REPORTED] +0.04%
• [SELF-REPORTED] 80.6%
• [UNSUPPORTED] +0.73%
• [UNSUPPORTED] +7.72%
• [SELF-REPORTED] 14.1%
• [SELF-REPORTED] Source: finance_data action=analyze/quote, exchange-reported bars, last bar 2026-09-09 (⚠️ caret-prefixed symbols ^GSPC/^IXIC/^DJI/^RUT/^VIX returned "no data on any exchange"; exchange-native symbols resolved).
• [PARTIAL] The Dow lost just over 400 points, or 0.8%, while the S&P 500 fell 0.5%. (unmatched: 400)
• [PARTIAL] Brent settled $101.21 (+3.4%), WTI $96.05 (+3.3%) — highest closes since May 22 (unmatched: 101.21, 96.05, 3.3)
• [PARTIAL] 10-yr hit session high 4.857%, highest since Nov 2023 (unmatched: 4.857)
• [PARTIAL] Equal-weight RSP −0.96% vs cap-weight SPY −0.47%; small-cap IWM −1.37% (unmatched: 0.96, 1.37)
• [PARTIAL] Sector tape (2026-09-09 close, finance_data quote): Energy was the only gainer — XLE +0.83% (20d +7.19%); Tech flat (XLK 0.00%); the laggards were Industrials XLI −1.51%, Consumer Discretionary XLY −1.34%, Utilities XLU −1.17%, Staples XLP −1.15%, Real Estate XLRE −1.12%, Materials XLB −1.06%, Comm. (unmatched: 7.19, 1.17, 1.15, 1.12)
• [PARTIAL] Services XLC −0.62%, Financials XLF −0.42%, Health Care XLV −0.33%. (unmatched: 0.62)
• [PARTIAL] Verified single-name moves for 2026-09-09 (finance_data): AMD +3.04% to 521.10 (RSI-14 78.3, 5-day +13.4%, 91.5% of 52-wk range — the standout), NVDA −0.91% to 223.67, MSFT −0.47% to 491.65, AAPL −0.28% to 315.34, TSLA −0.10% to 367.81. (unmatched: 521.1, 78.3, 13.4, 91.5, 0.28, 367.81)
• [PARTIAL] ET today**, Dow Jones consensus +0.3% m/m, +5.3% y/y; weekly jobless claims and August existing home sales also due this morning; CPI follows Friday 9/11 (consensus +0.4% m/m, +3.4% y/y) — CNBC live blog (fetched) and the BLS release schedule page (https://www.bls.gov/pPI/). (unmatched: 5.3)
• [PARTIAL] Pre-market futures (TipRanks page headed "Stock Indexes – Sep 10, 2026", https://www.tipranks.com/markets/pre-market/gainers): US 500 futures 7,722.00, +0.11%; US 30 futures 52,999.00, +0.26%; US Tech 100 futures 29,727.00, −0.06%. (unmatched: 7722, 0.11, 52999, 0.26, 29727, 0.06)
• [PARTIAL] CNBC's Wednesday-evening read: Dow futures +54 pts (+0.1%), S&P futures +0.04%, Nasdaq-100 marginally lower. (unmatched: 0.04)
• [PARTIAL] Today's early global tape: Asia lower — Nikkei 64,805.45, −0.52%; Kospi 6,999.21, −0.74%; ASX 200 8,783.40, −1.44%; Hang Seng 24,949.52, −1.29% (CNBC, Sept 10 entries). (unmatched: 64805.45, 0.52, 6999.21, 200, 8783.4, 1.44, 24949.52, 1.29)
• [SELF-REPORTED] Rates today: 10-yr 4.847% (+1bp), 30-yr 5.298% (+1bp) (CNBC, Sept 10).
• [PARTIAL] Today's dated headline flow: Strait of Hormuz commodity-vessel crossings below 10 vs a ~14 10-day average (FinancialJuice, 2026-09-10 03:05 UTC); 10-yr China–US yield gap at a record 316.7bp (01:50 UTC) — finance_news. (unmatched: 316.7)
• [PARTIAL] Watch AMD: it closed 2026-09-09 at an RSI of 78.3 after a +13.4% five-day run. (unmatched: 78.3, 13.4)
• [SELF-REPORTED] All rows are 2026-09-09 closes — the most recent data that exists.
• [UNSUPPORTED] 1d%
• [UNSUPPORTED] 5d%
• [SELF-REPORTED] −0.465
• [SELF-REPORTED] +0.081
• [SELF-REPORTED] −1.059
• [SELF-REPORTED] 716.31
• [SELF-REPORTED] −0.285
• [SELF-REPORTED] +1.225
• [SELF-REPORTED] −0.298
• [UNSUPPORTED] 51.7
• [SELF-REPORTED] 524.07
• [SELF-REPORTED] −0.750
• [SELF-REPORTED] −0.697
• [SELF-REPORTED] −2.459
• [UNSUPPORTED] 41.5
• [SELF-REPORTED] 290.64
• [SELF-REPORTED] −1.368
• [SELF-REPORTED] +0.024
• [SELF-REPORTED] −3.439
• [SELF-REPORTED] 39.9
• [SELF-REPORTED] 214.64
• [SELF-REPORTED] −0.964
• [SELF-REPORTED] −1.356
• [SELF-REPORTED] −2.741
• [SELF-REPORTED] 37.5
• [PARTIAL] The 2026-09-09 tape was a clean macro-driven risk-off move, not a company-specific one: energy was the only sector that rose while energy-linked CPI risk (Brent >$100) went straight into long-end yields at two-decade highs, which is what hit rate-sensitive small caps (IWM −1.37%, RUT −1.32%) and equal-weight breadth (RSP −0.96%) hardest. The Treasury's $6bn buyback — three times the usual size, executed today — was the policy response and it did not stop the selling. (unmatched: 1.37, 1.32, 0.96)
• [PARTIAL] Today's setup is a coin-flip on the PPI print: futures are flat (S&P +0.11% pre-market), the long end is still drifting higher (+1bp at both 10s and 30s), and the pre-market movers are idiosyncratic (VRT −9.67%, CMCSA −6.38% against MRVL +3.94%, IBM +2.86%) rather than a broad risk signal. (unmatched: 0.11)
• [PARTIAL] If PPI lands hot versus +0.3% m/m / +5.3% y/y, the same transmission chain — oil → yields → small caps and equal weight — is the one to watch; CPI tomorrow at +0.4% m/m / +3.4% y/y consensus is the bigger event. (unmatched: 5.3)
• [SELF-REPORTED] None exists in any reachable source as of the pulls.
• [SELF-REPORTED] Tool gaps: pyth realtime spot feed returned HTTP 401; ES=F/NQ=F futures and all caret-prefixed index symbols returned no data, so index levels rest on exchange-native symbols (SPX/IXIC/DJI/RUT/VIX) plus ETF proxies.
• [SELF-REPORTED] Index RSI differed across two pulls for SPX (63.6 on a 30-bar window vs 47.5 on 250 bars), so RSI above is quoted only from the ETF proxies.
• [PARTIAL] Minor feed discrepancy: TipRanks showed the 2026-09-09 Dow at 52,380.66 vs the finance feed's 52,386.25 (~5.6 pts); both agree directionally (−0.77%). (unmatched: 52386.25, 0.77)
• [PARTIAL] Sources:** https://www.cnbc.com/2026/09/09/stock-market-today-live-updates.html · https://www.cnbc.com/2026/09/10/stock-market-today-live-updates.html (404) · https://www.bls.gov/pPI/ · https://www.tipranks.com/markets/pre-market/gainers · https://premarketprice.com/premarket-movers · https://www.whyisstock.com/markets · https://stockanalysis.com/etf/spy/ · https://apnews.com/article/wall-street-stocks-dow-nasdaq-31c966aef214740b8fec71e399a051b8 · https://www.fxempire.com/forecasts/article/sp500-bessent-buyback-fails-to-halt-selling-as-oil-keeps-fed-risk-high-1626186 · https://stockmarketwatch.com/indices/dowjones/today (rejected) · https://vittarthi.com/markets/us (JS-rendered, no data) · finance_data analyze/quote/history (last_bar 2026-09-09) · finance_news (items 2026-09-10 01:37–04:30 UTC). (unmatched: 404, 1626186, 37, 30)

Detailed Findings

Round 0 · Finding 1

US Market Internals & Post-Close Developments — 2026-09-10

Read this first (critical data-availability finding): As of every data pull in this session, the US regular session for Thursday 2026-09-10 had not closed, and no 2026-09-10 US close exists in any source I could reach. The last completed US session in every tool pull is 2026-09-09. I am therefore not able to report 2026-09-10 closes, 2026-09-10 breadth, or 2026-09-10 after-hours events, and I am explicitly not substituting 2026-09-09 data for them. Evidence:

• finance_data (analyze, 1d, 250 bars) returned last_bar: "2026-09-09 13:30:00" for every symbol requested — SPY, RSP, QQQ, DIA, IWM, VIX, AAPL, NVDA, MSFT, TSLA, AMD — i.e. no 2026-09-10 bar exists in the feed.
• finance_data hourly SPY returned 30 bars ending 2026-09-09 19:30:00 (3:30pm ET Sept 9); no Sept 10 bars at any granularity.
• The CNBC rolling live blog covering the Sept 10 session is still in pre-open framing at fetch time — headline: "Stock futures are little changed as traders brace for wholesale inflation report" — with the Aug PPI still described as upcoming ("comes out Thursday morning"), 2026-09-10 (https://www.cnbc.com/2026/09/09/stock-market-today-live-updates.html).
• A live market aggregator dated September 10, 2026 still displays US indices at their Sept 9 changes (S&P −0.48%, Nasdaq −0.64%, Dow −0.77%) while showing live Sept 10 European/Asian moves — again indicating the US cash session had not printed a Sept 10 close (https://www.whyisstock.com/markets).
• ~6 targeted searches for a Sept 10 close recap (including the AP "How major US stock indexes fared Thursday" pattern, which only surfaced the 7/9/2026 article) returned no Sept 10 close data.

Because of that, the manifest's success criteria for 2026-09-10 index closes, movers, sector returns and after-hours items cannot be met from available data; the items below are split into what is genuinely in-window (2026-09-10), what is explicitly out-of-window background (2026-09-09), and what is unfetched.

1. In-window, 2026-09-10 (verified)

Scheduled macro event — August PPI, 8:30 a.m. ET on 2026-09-10 (primary source): "The Producer Price Index for August 2026 is scheduled to be released on September 10, 2026, at 8:30 A.M. Eastern Time." — U.S. Bureau of Labor Statistics, https://www.bls.gov/pPI/ (fetched; release-schedule page). Dow Jones consensus as reported by CNBC: +0.3% m/m and +5.3% y/y. Whether the print had been released at my pull time is UNVERIFIED — the CNBC blog still framed it as pending. No PPI figure is asserted here.

…(truncated — the summary above captures the substance)

Round 0 · Finding 2

1. Bottom line up front / integrity statement: the 2026-09-10 session data could not be verified; tools' latest complete session = 2026-09-09.
2. What I could verify for 2026-09-10 (in-window): only that a page labeled 10 Sep 2026 exists (vittarthi) with no retrievable figures; CNBC's predicted Sept 10 live-blog URL 404s; WSJ Sept 10 live coverage blocked. And unverified calendar leads.
3. What the last completed session (Sept 9, 2026) looked like — clearly labeled BACKGROUND ONLY (out of window): index proxies, cross-asset, drivers. Include the specific numbers with sources. Note the caveat that these are ETF/index-proxy values, and that the outright index levels for Sept 9 come only from the stockmarketwatch Dow figure (52,380.66) — which is secondhand, AI-generated, and internally inconsistent.
4. Attribution analysis (the actual sub-question): why I can't attribute the top movers of 2026-09-10; plus the attribution conflict I found for Sept 9 (CPI claim vs oil/Treasury buyback) as a demonstration of the attribution trap.
5. Explicit unfetched list.
6. Sources list.

Let me be careful about each number's provenance:

From finance_data analyze (symbols SPY/QQQ/DIA/IWM, 1d, 250 bars, last_bar 2026-09-09):

• SPY 762.40, 1d -0.465%, 5d +0.081%, 20d -1.059%, RSI-14 48.04, MACD 2.0897 vs signal 3.2394 (hist -1.1496), SMA50 758.02, SMA200 713.18, VWMA-67 750.75, ATR-14 6.06, avg vol 20d 36.40M, trend strong_uptrend.
• QQQ 716.31, 1d -0.285%, 5d +1.225%, 20d -0.298%, RSI 51.65, trend strong_uptrend.
• DIA 524.07, 1d -0.75%, 5d -0.697%, 20d -2.459%, RSI 41.52, trend downtrend.
• IWM 290.64, 1d -1.368%, 5d +0.024%, 20d -3.439%, RSI 39.91, trend downtrend.

From finance_data quote source=yahoo (9 symbols): SPY -0.393%, QQQ -0.155%, DIA -0.662%, IWM -1.307%, ^VIX 16.46 (+4.641%), ^TNX 4.837 (+0.645%), CL=F 96.10 (-0.476%), GC=F 4,455.40 (+0.399%), DX-Y.NYB 98.739 (-0.078%). Caveat: SPY price 762.40 = same as Sept 9 close per stockanalysis, so this snapshot is the Sept 9 session, not Sept 10. I'll state that replication that the yahoo snapshot equals the Sept 9 close.

Note the discrepancy: analyze says SPY -0.465% and DIA -0.75%, yahoo quote says -0.393% and -0.662%. Both are small-feed differences; the stockanalysis page says SPY closed Sep 9 at -0.46%, which matches analyze (-0.465%). So the yahoo quote deltas may be measuring a slightly different prior close (765.41 vs 765.96). I'll note: SPY Sept 9 change reported between -0.39% and -0.47% depending on the feed's prior-close convention; stockanalysis (-0.46%) matches the analyze pull. Good—transparent.

…(truncated — the summary above captures the substance)

Round 0 · Finding 3

US Market Recap — Session of 2026-09-10..2026-09-10 (Status: PRE-/EARLY-SESSION AS OF DATA PULLS)

1. Executive Summary

Material limitation, stated up front: every market-data pull I made in this session returned bars only through the 2026-09-09 US session. The 2026-09-10 US cash session had not completed (and, in the price feed, had not begun) at the time of my pulls. Therefore the mission's core deliverable — verified 2026-09-10 index closes, % changes, and biggest movers — cannot be produced from the tools without fabricating numbers, which I will not do. Every 2026-09-10 close-level item below is explicitly flagged UNFETCHED; verified prices are labeled with the date they actually belong to (2026-09-09), and no 2026-09-09 number is presented as a 2026-09-10 move.

What I can document for 2026-09-10..2026-09-10 with dated sources:

• The macro calendar was confirmed and rate-heavy: August 2026 PPI at 8:30 AM ET (the day's primary catalyst), weekly jobless claims and August existing-home sales later that morning, and a $6B Treasury buyback operation of 10–20yr Treasurys announced for Sept. 10.
• Overnight/pre-open positioning: US futures ~flat (Dow futures +54 pts / +0.1%), Asia lower (Nikkei, Kospi, ASX 200, Hang Seng all down), and early-Thursday Treasurys quoted 10Y 4.847% (+1bp), 30Y 5.298% (+1bp) — all from CNBC's live blog covering the Sept. 10 session (fetched).
• Context from the last completed session (2026-09-09): a third straight down day — S&P 500 −0.5%, Nasdaq −0.6%, Dow −0.8% — driven by

Round 0 · Finding 4

US Stock Market Recap — Session Date 2026-09-10 (window 2026-09-10..2026-09-10)

HEADLINE FINDING: There is no 2026-09-10 US session to report. At the time of my final tool pull, the 2026-09-10 regular session had not opened, and no 2026-09-10 index close, percentage change, mover, sector return, or macro release print existed in any source I could reach. Every success-criterion item for this sub-question is therefore returned as UNFETCHED / NOT YET PRINTED, with the prior session (2026-09-09) supplied only as clearly-labelled background so the report has a grounded anchor and nothing is invented.

1. Executive Summary

• I could not verify a single 2026-09-10 index close. Four independent probes of finance_data (daily, 1-hour and 5-minute bars for SPX/NDX/DJI/RUT) all terminate at the 2026-09-09 session — the last daily bar is timestamped 2026-09-09 13:30:00, and the last 5-minute bar is 2026-09-09 20:00:00. No 2026-09-10 bar exists in the feed (tool call: finance_data action=quote/history, SPX, NDX, DJI, RUT).
• Time-of-day evidence confirms the session had not begun. The fetched TipRanks pre-market page, whose own header reads "Pre-Market Gainers Today Sep 10, 2026," displays a live countdown of "markets open in 8 hours 46 minutes" and a "Stock Indexes - Sep 10, 2026" panel containing only pre-market futures plus the previous cash closes (https://www.tipranks.com/markets/pre-market/gainers). The CNBC live blog for the 2026-09-10 session, fetched directly, leads with "Stock futures are little changed as traders brace for wholesale inflation report" and is header-stamped "Updated Wed, Sep 9 2026 11:17 PM EDT" (https://www.cnbc.com/2026/09/09/stock-market-today-live-updates.html).
• Consequently: 2026-09-10 closes — 0 of 4 obtained; 2026-09-10 named movers — 0 of the ≥5 required obtained; 2026-09-10 sector ETF returns — none obtained; 2026-09-10 VIX/dollar/gold — none obtained. The only 2026-09-10-dated quantitative content available is pre-session (futures, Asian cash markets, Treasury yields, the pending PPI release).
• A caution on search-visible pages. Several search results advertise a "Sep 10, 2026 close" recap. The one I fetched (vittarthi.com/markets/us) rendered its "Key Indices," "Top Movers," "Sectors," "Market breadth," and "Rates, dollar & commodities" sections completely empty — section headers only, no figures — while carrying the meta description "US stock market closing data for Sep 10, 2026." It is an AI-generated template, not a data source, and I have not used it for any number (https://vittarthi.com/markets/us).

2. Key Findings (with confidence levels)

…(truncated — the summary above captures the substance)

Round 0 · Finding 5

Sector SPDR performance on 2026-09-10 — BLOCKED: no 2026-09-10 US session data exists in any feed I could reach

The single most important finding: the 2026-09-10 US cash session had not yet occurred at the time of data collection, so the requested 2026-09-10 1-day and 5-day sector returns cannot be produced. Every pull I made across three bar intervals, plus the news feed and every reachable in-window page, terminates at the 2026-09-09 session. I am explicitly flagging this rather than substituting the prior session's numbers for the 2026-09-10 moves.

Evidence that 2026-09-10 has no session data (all from tool output)

Verification that the feed's change_pct_1 is the 2026-09-09 session change, not 2026-09-10 — I cross-checked the raw OHLCV against the reported 1-day changes, and all three reconcile exactly:

• XLK: 2026-09-08 close 187.87 → 2026-09-09 close 187.87 = 0.000%, matching reported change_pct_1: 0.0
• XLE: 2026-09-08 close 64.77 → 2026-09-09 close 65.31 = +0.834%, matching reported change_pct_1: 0.834
• XLI: 2026-09-08 close 174.42 → 2026-09-09 close 171.79 = −1.508%, matching reported change_pct_1: -1.508

So there is no ambiguity: the numbers below belong to 2026-09-09, not 2026-09-10.

Status of the requested deliverable

• 2026-09-10 1-day % change, each of the 11 sector SPDRs: UNFETCHED — no such bar exists in the feed. Not a tool error; the session had not traded.
• 2026-09-10 5-day % change, each of the 11 sector SPDRs: UNFETCHED — same reason.
• 2026-09-10 sector ranking (best→worst): NOT PRODUCIBLE from available data.
• Success-criteria items requiring verified 2026-09-10 index closes and their 1-day changes are likewise UNMET — the underlying session does not yet exist in any source I reached.

Last completed session, clearly labelled: 2026-09-09 (BACKGROUND / prior session — NOT the 2026-09-10 move)

…(truncated — the summary above captures the substance)

Round 0 · Finding 6

US Stock Market — Session Recap, 2026-09-10 (as of data available)

1. Executive Summary

Critical framing finding (verified): the 2026-09-10 US cash session had not closed — and in fact had not opened — as of the latest data timestamps available in every tool I ran. The most recent completed US session in the data is Wednesday, 2026-09-09. Evidence:

• Every finance_data pull for the indices and index ETFs returns last_bar: 2026-09-09 13:30:00 (i.e., last completed daily bar = Sep 9, 2026) — see pulls below.
• CNBC's live market blog dated 2026-09-09 was "Updated Wed, Sep 9 2026 11:17 PM EDT" and its top item reads: "Stock futures traded nearly flat on Wednesday evening as traders looked ahead to the first of two inflation reports due this week… August's producer price index … comes out Thursday morning" — i.e., written overnight before the Sep 10 open (fetched: https://www.cnbc.com/2026/09/09/stock-market-today-live-updates.html).
• CNBC's Sep 10 live-blog URL (https://www.cnbc.com/2026/09/10/stock-market-today-live-updates.html) returns 404 "Not Found" — no Sep 10 US session blog exists yet (fetched, HTTP 404).

Therefore: the closing levels and 1-day % changes for the S&P 500, Nasdaq Composite, Dow, Russell 2000 and VIX for 2026-09-10 cannot be reported — they do not yet exist, and I explicitly flag them as UNFETCHED/not-yet-occurred rather than substitute other data. Per the task's anti-goal, I do not substitute Sep 9 moves as if they were Sep 10's. Below, I report (a) the verified last completed session (Sep 9) closes — clearly labeled as pre-Sep-10, background to the Sep 10 open — and (b) the verified 2026-09-10 in-window pre-market picture (futures, Asia, rates, oil, pre-market movers, scheduled catalysts).

2. Key Findings

2a. VERIFIED — Last completed session (2026-09-09), from finance_data (NOT Sep 10 data; labeled background)

Source: finance_data action=analyze (SPX, IXIC; DJI, RUT, VIX), bars=250, last_bar: 2026-09-09 13:30:00 for all five. Symbols with caret prefixes (^GSPC, ^IXIC, ^DJI, ^RUT, ^VIX) failed to resolve on any exchange (explicit unfetched attempt logged); exchange-native symbols SPX/IXIC/DJI/RUT/VIX resolved.

…(truncated — the summary above captures the substance)

Investigation Trail

Round 0

• What were the closing levels and 1-day percentage changes on 2026-09-10 for the S&P 500 (^GSPC), Nasdaq Composite (^IXIC), Dow Jones Industrial Average (^DJI), Russell 2000 (^RUT), and CBOE Volatility Index (^VIX)? Use finance_data action=analyze to batch these symbols and report each one's close, 1d%, 5d%, 20d%, RSI-14, SMA 50/200, trend, and 52-week range position.
• Which individual US-listed stocks were the biggest movers on 2026-09-10? Identify the top percentage gainers and losers among S&P 500 and Nasdaq-100 constituents (resolve tickers via finance_data action=search if a name is unclear) and pull each one's exact price, 1d%, and 5d% with finance_data action=analyze as of 2026-09-10.
• How did the 11 S&P sector SPDR ETFs (XLK, XLF, XLE, XLV, XLI, XLP, XLY, XLU, XLB, XLRE, XLC) perform on 2026-09-10? Pull each ETF's 1-day and 5-day percentage change with finance_data action=analyze and rank sectors from best to worst to show which groups led and lagged the tape on that date.
• What US macroeconomic data releases and central-bank events occurred on 2026-09-10..2026-09-10 (e.g., CPI/PPI, jobless claims, payrolls revisions, Fed speeches or FOMC-related news), and how did Treasury yields (^TNX, ^FVX), the US dollar, gold (GC=F), and crude oil (CL=F) move that same day? Use finance_news for the dated headlines and finance_data action=analyze for the cross-asset price moves.
• What company-specific news catalysts — earnings results, guidance changes, M&A announcements, analyst upgrades/downgrades, regulatory or legal developments — were published 2026-09-10..2026-09-10 that explain the day's largest single-stock moves? Match each of the top movers to a specific dated headline and judge which catalyst genuinely accounts for the move versus which is coincidental coverage.
• What were the market internals and post-close developments on 2026-09-10 — advance/decline breadth, new 52-week highs versus lows, equal-weight versus cap-weight S&P 500 performance (RSP vs SPY), and any after-hours earnings or news announced after the 2026-09-10 close that could shape the next session? Pull RSP and SPY 1d% via finance_data action=analyze and use finance_news plus web search bounded to 2026-09-10..2026-09-10 for after-hours items.

Sources

• https://www.cnbc.com/2026/09/09/stock-market-today-live-updates.html
• https://www.whyisstock.com/markets
• https://www.bls.gov/pPI/
• https://apnews.com/article/wall-street-stocks-dow-nasdaq-31c966aef214740b8fec71e399a051b8
• https://vittarthi.com/markets/us
• https://stockmarkethours.org/stock-market-holidays-2026
• https://the-calendar.net/finance/stock-market-holidays-2026/
• https://www.aistockselection.com/en/us-stock-market-holidays-2026/
• https://www.cnbc.com/2026/09/08/stock-market-today-live-updates.html
• https://eskisignal.com/stock-market-holidays-2026/
• https://strongbuyanalytics.com/stock-market-outlook
• https://www.nyse.com/publicdocs/nyse/ICE_NYSE_2026_Yearly_Trading_Calendar.pdf
• https://howmanytradingdays.com/stock-market-holidays
• https://stockmarkethours.org/stock-market-holidays
• https://www.wsj.com/livecoverage/stock-market-today-dow-sp-500-nasdaq-09-08-2026
• https://www.barrons.com/livecoverage/stock-market-news-today-090826
• https://finance.yahoo.com/markets/live/stock-market-today-tuesday-september-8-dow-sp-500-nasdaq-080440338.html
• https://stockmarketwatch.com/indices/dowjones/today
• https://www.cnbc.com/2026/09/03/stock-market-today-live-updates.html
• https://www.marketwatch.com/livecoverage/stock-market-today-dow-s-p-500-nasdaq-oil-prices-war-in-iran-escalates-steady-start
• https://apnews.com/article/wall-street-dow-nasdaq-stocks-0d013820a2ef2dacd3c28d4f23a63bb1
• https://www.investopedia.com/stock-market-today-dow-jones-s-and-p-500-09092026-12112269
• https://www.reuters.com/world/china/global-markets-global-markets-2026-09-09/
• https://www.wsj.com/livecoverage/stock-market-today-dow-sp-500-nasdaq-09-09-2026
• https://intellectia.ai/blog/rising-oil-prices-inflation-stock-market-september-2026
• https://www.stockcram.com/analysis/market-analysis-september-9-2026-fed-decision-jobs-data-rate-change
• https://eurasiabusinessnews.com/2026/09/10/stock-market-today-dow-and-nasdaq-drop-as-oil-hits-100-gold-price-at-4399/
• https://www.orlandosentinel.com/2026/09/09/us-markets-crude-oil/
• https://wallstreetsights.com/stock-market/is-the-stock-market-open-tomorrow/
• https://investomatica.com/is-stock-market-open
• https://www.investopedia.com/stock-market-today-dow-jones-s-and-p-500-09032026-12094330
• https://wealthvieu.com/investing/stocks/stock-market-holidays/
• https://www.wsj.com/livecoverage/stock-market-today-dow-sp-500-nasdaq-09-03-2026
• https://www.stocktitan.net/articles/holiday-calendar-early-closes
• https://www.weekendindex.com/
• https://www.coinbase.com/predictions/event/KXINXU-26SEP10H1400
• https://www.thestreet.com/stock-market-today/stock-market-today-dow-jones-sp-500-nasdaq-updates-sept-09-2026
• https://finance.yahoo.com/markets/live/stock-market-today-wednesday-september-9-dow-sp-500-nasdaq-futures-080411279.html
• https://www.barrons.com/livecoverage/stock-market-news-today-090926
• https://stockmarketwatch.com/indices/sp500/today
• https://blsmon1.bls.gov/ppi/
• https://www.bls.gov/news.release/ppi.nr0.htm
• https://www.financecalendar.com/event/us-producer-price-index-august-2026/
• https://fred.stlouisfed.org/series/PPIFIS/
• https://www.cnbc.com/2026/09/09/china-cpi-ppi-august-oil-prices-tech-manufacturing-.html
• https://fred.stlouisfed.org/series/PPIACO
• https://www.indexbox.io/blog/us-wholesale-prices-ease-in-july-but-core-inflation-beats-expectations/
• https://www.cnbc.com/2026/08/13/wholesale-prices-were-flat-in-july-below-expectations-for-0point2percent-increase.html
• https://www.tipranks.com/news/stock-market-today-spy-qqq-slump-as-oil-prices-reclaim-100-treasury-yields-edge-higher
• https://stockanalysis.com/etf/spy/
• https://www.cnbc.com/2026/09/10/stock-market-today-live-updates.html
• https://www.wsj.com/livecoverage/stock-market-today-dow-sp-500-nasdaq-09-10-2026
• https://www.schwab.com/learn/story/stock-market-update-open
• https://www.fxempire.com/forecasts/article/sp500-bessent-buyback-fails-to-halt-selling-as-oil-keeps-fed-risk-high-1626186
• https://www.marketwatch.com/story/strategists-say-s-p-
• https://bellhour.com/learn/stock-market-holidays-2026
• https://www.aistockselection.com/en/us-stock-market-holidays/
• https://www.cnbc.com/2026/08/31/stock-market-today-live-updates.html
• https://www.cnbc.com/2026/09/02/stock-market-today-live-updates.html
• https://www.ainvest.com/market/movers-monitor/sep-09-2026-sep-09-2026/?page=1
• https://earnings-watcher.com/earnings-this-week
• https://premarketprice.com/gainers
• https://beta.earningswhispers.com/calweek
• https://premarketprice.com/premarket-movers
• https://investingcalendar.com/tomorrows-biggest-earnings
• https://www.strasmore.com/blog/biggest-stock-movers-2026
• https://weeklytrader.io/gainers.php
• https://www.siriusinvestors.com/stock/market-movers
• https://www.cnbc.com/2026/07/27/stock-market-today-live-updates.html
• https://www.cnbc.com/2026/08/09/stock-market-today-live-updates.html
• https://www.cnbc.com/
• https://www.cnbc.com/2026/08/04/stock-market-today-live-updates.html
• https://www.cnbc.com/2026/07/09/stock-market-today-live-updates.html
• https://www.youtube.com/c/CNBCtelevision/live
• https://www.cnbc.com/2026/08/24/stock-market-today-live-updates.html
• https://forex.tradingcharts.com/economic_calendar/2026-09-10.html?code=USD
• https://fedratecalc.com/us-economic-calendar/september-2026/
• https://chiragmirani.github.io/macro-dashboard/
• https://therighttrader.com/economic-calendar
• https://tradewithmaya.com/economiccalendar
• https://fedratecalc.com/us-economic-calendar/
• https://www.bls.gov/schedule/2026/home.htm
• https://truflation.com/economic-calendar
• https://verifiedinvesting.com/pages/economic-calendar
• https://www.datasetiq.com/economic-calendar
• https://www.bls.gov/news.release/archives/ppi_08132026.htm
• https://stockmarkethours.org/events/us-ppi-release
• https://fred.stlouisfed.org/series/PPIFID/
• https://blsmon1.bls.gov/ppi/tables/
• https://fred.stlouisfed.org/series/PPIFDG/
• https://gobull.ai/blog/ppi-report-september-2026
• https://www.financecalendar.com/event/us-producer-price-index-september-2026/
• https://www.tipranks.com/markets/pre-market/gainers
• https://www.tipranks.com/m
• https://www.cnbc.com/2026/09/07/stock-market-today-live-updates.html
• https://www.cnbc.com/2026/08/19/stock-market-today-live-updates.html
• https://www.cnbc.com/2026/08/25/stock-market-today-live-updates.html
• https://vistapglobal.com/stock-market-today-sept-9-2026-sp-500-dow-and-nasdaq-fall-as-oil-rallies-rates-rise-and-risk-appetite-fades-dell-ser-soc-uso-vix-rise/
• https://www.cnbc.com/2026/08/23/stock-market-today-live-updates.html
• https://stockmarketwatch.com/movers/premarket
• https://markets.businessinsider.com/premarket?miRedirects=1&op=1
• https://www.cnbc.com/markets/pre-markets/
• https://www.investing.com/equities/pre-market
• https://www.thestreet.com/stock-market-today/stock-market-today-dow-jones-sp-500-nasdaq-updates-sept-08-2026
• https://www.schwab.com/learn/story/stock-sector-outlook
• https://www.ssga.com/us/en/individual/insights/sector-market-perspectives-q3-2026
• https://www.themathergroup.com/insights/second-quarter-2026-market-returns-s-p-500-sectors-asset-classes
• https://westmountfundamentals.com/sp500-sector-performance-study-2026
• https://www.stockbase.com/market-data/sectors
• https://csimarket.com/markets/markets_glance.php
• https://www.investing.com/news/stock-market-news/september-market-outlook-historical-weakness-meets-2026-volatility-93CH-4814892
• https://stockmarkethours.org/nyse-holidays-2026
• https://publicholidayshub.com/stock-market-holidays/
• https://www.wellsfargoadvisors.com/research-analysis/commentary/stock-market-news.htm
• https://www.investtech.com/main/market.php?MarketID=992&product=38
• https://www.barrons.com/livecoverage/stock-market-news-today-090326
• https://www.cnbc.com/2026/09/01/stock-market-today-live-updates.html

Trace Index

Tool-call traces are persisted under /srv/swarm_web_runs/run-1789015018396-0008/finance_output/traces.