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: 2026-09-13T04:53:05.022283449+00:00

Coverage window: 2026-09-13 – 2026-09-13

Rounds: 1

Status: PARTIAL

Objective check — 0 of 6 criteria met

The run produced work, but the objective below is not fully achieved. Each unmet criterion names what is still outstanding.

• UNVERIFIABLE — The report states unambiguously whether US equity markets were open or closed on 2026-09-13, and if closed, names the exact date of the most recent completed trading session
  • the grader returned no verdict for this criterion
• UNVERIFIABLE — The report lists closing level and 1-day % change for at least the S&P 500, Dow Jones Industrial Average, Nasdaq Composite and Russell 2000 for the identified session, each traceable to a pulled quote or news source
  • the grader returned no verdict for this criterion
• UNVERIFIABLE — The report names at least three individual-stock gainers and three losers from that session with ticker and % move, each with a stated catalyst or 'catalyst not identified in sources'
  • the grader returned no verdict for this criterion
• UNVERIFIABLE — The report names at least two macro drivers (e.g. specific economic data release, Fed commentary, Treasury yield or VIX level with its change) with the date the driver occurred
  • the grader returned no verdict for this criterion
• UNVERIFIABLE — Sector-level performance for at least 8 of the 11 GICS sectors (or the sector ETF proxies) on the identified session is reported with % change
  • the grader returned no verdict for this criterion
• UNVERIFIABLE — Any index, ticker, or data series that returned no data or an error is explicitly listed as unfetched
  • the grader returned no verdict for this criterion

Evidence: 196 claims · 94 sourced · 24 partial · 24 unsupported · 53 self-reported (no independent source) · 46 single-source

Executive Summary

As of 2026-09-13, there was no US market session to report — 2026-09-13 was a Sunday and US equity markets were closed. The last completed session was Friday, 2026-09-11, and every figure below refers to it. The closure is corroborated three ways: the calendar, the NYSE's core trading session of 9:30 a.m.–4:00 p.m. ET on business days with no weekend session (https://www.nyse.com/trade/hours-calendars), and the price data itself — every series pulled returned a final daily bar at 2026-09-11 13:30 UTC with no 2026-09-12 or 2026-09-13 bar. 2026-09-11 was a normal full trading day (nearest holiday: Labor Day, Mon 2026-09-07; next: Thanksgiving, Thu 2026-11-26, per https://dhan.co/blog/us-stocks/is-the-us-stock-market-closed-on-9-11-11th-september-2026/).

2026-09-11 was a broad relief rally that snapped a four-session losing streak but did not save the week. All four major indices closed higher; nine of eleven sectors advanced; the VIX collapsed 11.21% to 15.84. The drivers were two: the August CPI report landing essentially in line (+0.4% m/m, +3.4% y/y) and a retreat in oil (WTI −2.37% to ~$100.05) on reports of diplomacy to secure the Strait of Hormuz. The week still finished lower for all three large-cap benchmarks, with markets pricing an ~85–90% probability of a Fed rate hike — not a cut — at the 2026-09-15/16 FOMC.

Major Indices — Session of Friday, 2026-09-11

Cross-checks pulled directly on the session's closing bars: SPY 764.29 (+0.852%), DIA 525.79 (+0.968%), QQQ 714.88 (+0.873%), IWM 288.89 (+0.414%) — every ETF proxy replicates its index move to within a few basis points, which is what makes the index levels above reliable despite the index-symbol conflicts noted in Risks.

Weekly context: S&P 500 −0.8%, Dow −1.6%, Nasdaq −0.7% for the week ended 2026-09-11 (https://www.investopedia.com/stock-market-today-dow-jones-s-and-p-500-09112026-12115543). The 2026-09-11 gain was a counter-trend bounce inside a losing week, not a regime change: every major index was still negative on both 5- and 20-day windows, and the Russell 2000 sat at just 9.3% of its 60-bar range with RSI-14 of 40.6 (pulled RUT).

Biggest Movers — 2026-09-11

Percent moves marked (pulled) come from closing-bar analyze pulls; others are sourced from dated recaps. 2026-09-11 was an up day, so the largest gains (+10% to +12%) far outweighed the largest losses (all under −4% among large caps).

Large-cap gainers

Large-cap losers

Source for the SMR/OKLO/LEU/SLS cluster: https://www.cot-trading.com/post?slug=top-stock-movers-september-11-2026 (that page ties three of the day's five biggest losers to capital-structure events, and they cluster in nuclear/uranium-adjacent names — a cohort signal the sources do not themselves name as a theme).

Sub-$2B movers (headline lists, not S&P 500 constituents): BDRX +96.18% ($1.30, tagged "earnings today"), MKDW +50.35% ($7.67), ACVA +44.18% (pulled), FEIM +42.40% (pulled), FTFT +40.59%; on the downside UCAR −32.68% ($4.98), CVV −24.77% ($4.72), GCTK −21.52%, SGLY −19.90%, ADIL −17.26%, PMTS −16.49% (https://stockmarketwatch.com/digest/2026-09-11). Most of these carry no catalyst identified in sources.

What Drove the Session

Post-close / weekend developments — forward risk for Monday 2026-09-14, NOT drivers of the 2026-09-11 close: a commercial vessel was hit by an unidentified projectile passing the Strait of Hormuz (UKMTO, 2026-09-13 01:00 UTC, https://www.financialjuice.com/News/9760652/); an Iranian commercial ship was hit near Qeshm Island with one dead and three injured (2026-09-13 04:41 UTC, https://www.financialjuice.com/News/9760737/); and an Iranian source told Tasnim the Strait "will remain closed despite the Iran-Oman agreement" (2026-09-12 16:32 UTC, https://www.financialjuice.com/News/9760570/).

Sector Performance — 2026-09-11

All eleven GICS sector SPDR proxies were pulled directly (every one returned a 2026-09-11 closing bar). Nine of eleven advanced.

Cyclicals and tech led; the only two decliners were the classic defensives. Real Estate still gained +0.86% even with the 10-year yield at 4.975%. Directionally corroborated by https://investrade.com/market-review-september-11-2026/ ("Nine of eleven S&P sectors finished higher led by technology (XLK), Industrials (XLI) and Communications (XLC)").

Summary Table

Explicit-format table as requested. P/E was not pulled for any ticker in this research — that column is uniformly unavailable, not omitted selectively. Insider (Form 4) and congressional-trade data were also not retrieved, so no informed-money signal is claimed for any mover.

n/f = not fetched. † Two pulled panels disagree on SPY's RSI-14 (50.3 vs 62.8); I report the lower and flag the conflict rather than choosing silently.

Analysis

The session's shape matters more than its size. A +0.86% S&P 500 day with a −11.21% VIX collapse and cyclicals leading defensives is a textbook relief bounce — but three internals say it was not a broad, healthy risk-on move. First, small caps barely participated: IWM +0.41% versus +0.85% to +0.97% for large caps, with the Russell 2000 down 4.88% over 20 days. Second, the leadership came from sectors that are badly negative over 20 days (XLI +1.07% on the day but roughly −7% over 20 days; XLY +0.89% on the day but −4.6% over 20 days) — mean-reversion into laggards, not fresh momentum. Third, the rate backdrop was actively hostile: the 10-year at 4.975% sits at the 99th percentile of its 52-week range with RSI-14 of 73.5, and the Fed was being priced for a hike, not a cut, days later.

The dispersion on the day came almost entirely from idiosyncratic single names, not macro. The two largest gainers (DELL +11.98%, HPE +12.44%) were one AI-hardware theme; the three largest losers (SMR −15.82%, OKLO −9.10%, LEU −8.21%) were one capital-structure-and-downgrade cohort. A reader looking for "the market's mood" should read the index and sector data; a reader looking for what actually moved should read the earnings, offerings and analyst actions on those names.

The honest limits: no P/E, valuation multiple, analyst target or insider-filing data was retrieved for any ticker, so this recap describes the session but supports no valuation or informed-money conclusion. Individual-stock "% move" figures also disagree across sources by roughly 0.5–1.5 percentage points depending on whether the snapshot was taken mid-session or at the close — the pulled closing-bar numbers are the ones to trust.

Risks & Open Questions

• 2026-09-13 itself has no market data because markets were closed. If what you wanted was Monday's action, that session had not yet occurred as of this report.
• Dow close conflict, unresolved. The recap pages print ~52,657 (one with a malformed "52,6572"); the pulled DJI bar and the DIA ETF cross-check both imply ~52,573–52,578. I report 52,573.29 but the ~79-point gap is not arbitrated by a primary index feed.
• Ten-year yield direction is disputed. My pulled TNX shows +0.63% on the day and Investrade says yields "remained higher," but EconCurrents states the 10-year "moved lower." Two of three point higher; I report the pulled figure.
• Oil settlement figures disagree across three sources ($100.05 −2.37% / $100.13 −2.29% / $100.60 −1.8%). All agree on the down direction.
• Two sources are excluded as unreliable on this session and are not used anywhere above: tickerdaily.com (asserted the S&P closed −1.2% "on rate hike fears," contradicted by AP, Investopedia, Investrade and four independent ETF price pulls) and stocksignal24.com (quoted "S&P 500 … at 713.94," an ETF-scale number, and "Healthcare led the advance" against a pulled XLV of −0.18%).
• No dated in-window source found identifying a catalyst for ACVA, FEIM, ALB, CLX, MRNA or the BDRX/MKDW/FTFT microcap moves; those catalysts are recorded as unidentified rather than inferred.
• Unfetched: P/E and all valuation multiples for every ticker; analyst targets/ratings; Form 4 insider and congressional trade data; NYSE/Nasdaq advancer-decliner counts and new highs/lows (breadth here rests on the cap-weight-vs-equal-weight proxy and the 9-of-11 sector count); and the NYSE primary holiday-calendar page in machine-readable form.
• Watch into Monday 2026-09-14: the weekend Strait of Hormuz escalation (vessel struck, Iranian ship hit, Strait reportedly staying closed) is a live oil and risk-sentiment input, and the FOMC decision on 2026-09-16 carries an ~85–90% priced probability of a rate hike.

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] As of 2026-09-13, there was no US market session to report — 2026-09-13 was a Sunday and US equity markets were closed.** The last completed session was Friday, 2026-09-11, and every figure below refers to it.
• [SELF-REPORTED] ET on business days with no weekend session (https://www.nyse.com/trade/hours-calendars), and the price data itself — every series pulled returned a final daily bar at 2026-09-11 13:30 UTC with no 2026-09-12 or 2026-09-13 bar.
• [UNSUPPORTED] 1-Day %
• [PARTIAL] +65.15 / +65.28 (unmatched: 65.28)
• [PARTIAL] +508.71 / +509.19 (unmatched: 509.19)
• [SELF-REPORTED] pulled IXIC; https://www.eoption.com/market-review-september-11-2026/
• [SELF-REPORTED] +0.031 pp
• [SELF-REPORTED] Cross-checks pulled directly on the session's closing bars: SPY 764.29 (+0.852%), DIA 525.79 (+0.968%), QQQ 714.88 (+0.873%), IWM 288.89 (+0.414%) — every ETF proxy replicates its index move to within a few basis points, which is what makes the index levels above reliable despite the index-symbol conflicts noted in Risks.
• [PARTIAL] Weekly context:** S&P 500 −0.8%, Dow −1.6%, Nasdaq −0.7% for the week ended 2026-09-11 (https://www.investopedia.com/stock-market-today-dow-jones-s-and-p-500-09112026-12115543). (unmatched: 9112026, 12115543)
• [PARTIAL] The 2026-09-11 gain was a counter-trend bounce inside a losing week, not a regime change: every major index was still negative on both 5- and 20-day windows, and the Russell 2000 sat at just 9.3% of its 60-bar range with RSI-14 of 40.6 (pulled RUT). (unmatched: 9.3, 40.6)
• [SELF-REPORTED] Percent moves marked (pulled) come from closing-bar analyze pulls; others are sourced from dated recaps.
• [SELF-REPORTED] 2026-09-11 was an up day, so the largest gains (+10% to +12%) far outweighed the largest losses (all under −4% among large caps).
• [SELF-REPORTED] $62.09
• [UNSUPPORTED] +12.44% (pulled) (unmatched: 12.44)
• [SELF-REPORTED] $567.29
• [UNSUPPORTED] +11.98% (pulled) (unmatched: 11.98)
• [PARTIAL] Same AI-server trade; sits at 99.9% of its 52-week range (https://www.cot-trading.com/post?slug=top-stock-movers-september-11-2026) (unmatched: 99.9)
• [SELF-REPORTED] $143.97
• [PARTIAL] No catalyst identified in sources — 247wallst states "no announcement, trial readout, or analyst call explains why" (https://247wallst.com/investing/2026/09/11/moderna-rallies-8-on-2026-melt-up-momentum-even-while-biontech-and-merck-stay-flat/) (unmatched: 247)
• [SELF-REPORTED] $275.75
• [UNSUPPORTED] +6.68% (pulled) (unmatched: 6.68)
• [SELF-REPORTED] $58.49
• [SELF-REPORTED] $102.94 / $516.13
• [UNSUPPORTED] +2.61% / +2.49% (pulled) (unmatched: 2.61, 2.49)
• [SELF-REPORTED] $830.17
• [UNSUPPORTED] −3.73% (pulled) (unmatched: 3.73)
• [UNSUPPORTED] Profit-taking after a big run — 247wallst states there was "no news attached" (unmatched: 247)
• [SELF-REPORTED] $20.44
• [UNSUPPORTED] −3.04% (pulled) (unmatched: 3.04)
• [SELF-REPORTED] $150.28
• [SELF-REPORTED] Source for the SMR/OKLO/LEU/SLS cluster: https://www.cot-trading.com/post?slug=top-stock-movers-september-11-2026 (that page ties three of the day's five biggest losers to capital-structure events, and they cluster in nuclear/uranium-adjacent names — a cohort signal the sources do not themselves name as a theme).
• [PARTIAL] Sub-$2B movers** (headline lists, not S&P 500 constituents): BDRX +96.18% ($1.30, tagged "earnings today"), MKDW +50.35% ($7.67), ACVA +44.18% (pulled), FEIM +42.40% (pulled), FTFT +40.59%; on the downside UCAR −32.68% ($4.98), CVV −24.77% ($4.72), GCTK −21.52%, SGLY −19.90%, ADIL −17.26%, PMTS −16.49% (https://stockmarketwatch.com/digest/2026-09-11). (unmatched: 44.18, 42.4)
• [SELF-REPORTED] Most of these carry no catalyst identified in sources.
• [PARTIAL] Traders moved from ~70% pre-CPI to ~85–90% odds of a quarter-point hike to 3.75–4.00% at the 2026-09-15/16 FOMC (CME FedWatch, via Investrade and https://econcurrents.substack.com/p/11-september-2026-market-close-and) (unmatched: 3.75)
• [PARTIAL] Post-close / weekend developments — forward risk for Monday 2026-09-14, NOT drivers of the 2026-09-11 close:** a commercial vessel was hit by an unidentified projectile passing the Strait of Hormuz (UKMTO, 2026-09-13 01:00 UTC, https://www.financialjuice.com/News/9760652/); an Iranian commercial ship was hit near Qeshm Island with one dead and three injured (2026-09-13 04:41 UTC, https://www.financialjuice.com/News/9760737/); and an Iranian source told Tasnim the Strait "will remain closed despite the Iran-Oman agreement" (2026-09-12 16:32 UTC, https://www.financialjuice.com/News/9760570/). (unmatched: 9760652, 9760737, 9760570)
• [SELF-REPORTED] All eleven GICS sector SPDR proxies were pulled directly (every one returned a 2026-09-11 closing bar).
• [SELF-REPORTED] +0.67%
• [SELF-REPORTED] +1.07%
• [SELF-REPORTED] +0.37%
• [SELF-REPORTED] +0.99%
• [SELF-REPORTED] +0.35%
• [SELF-REPORTED] +0.89%
• [SELF-REPORTED] +0.32%
• [SELF-REPORTED] −0.18%
• [SELF-REPORTED] Cyclicals and tech led; the only two decliners were the classic defensives.
• [UNSUPPORTED] **P/E was not pulled for any ticker in this research — that column is uniformly unavailable, not omitted selectively.
• [UNSUPPORTED] 1d%
• [UNSUPPORTED] 5d%
• [UNSUPPORTED] −1.17%
• [UNSUPPORTED] −1.82%
• [SELF-REPORTED] 52,578.27
• [UNSUPPORTED] −2.07%
• [UNSUPPORTED] −2.35%
• [UNSUPPORTED] −0.94%
• [UNSUPPORTED] −2.17%
• [UNSUPPORTED] −4.88%
• [SELF-REPORTED] 40.6
• [PARTIAL] Lagging; 9.3% of 60-bar range (unmatched: 9.3)
• [SELF-REPORTED] 764.29
• [SELF-REPORTED] −1.15%
• [UNSUPPORTED] 50.3†
• [PARTIAL] Below SMA-20 (766.88) & SMA-50 (767.31); MACD hist. −1.31 (unmatched: 766.88, 767.31, 1.31)
• [SELF-REPORTED] 714.88
• [SELF-REPORTED] −0.39%
• [UNSUPPORTED] 50.8
• [SELF-REPORTED] 525.79
• [UNSUPPORTED] −2.25%
• [SELF-REPORTED] 45.1
• [SELF-REPORTED] 288.89
• [SELF-REPORTED] +0.41%
• [SELF-REPORTED] −2.13%
• [UNSUPPORTED] 38.7
• [SELF-REPORTED] 62.09
• [SELF-REPORTED] +12.44%
• [SELF-REPORTED] 567.29
• [SELF-REPORTED] +11.98%
• [PARTIAL] 99.9% of 52-wk range (unmatched: 99.9)
• [SELF-REPORTED] 150.28
• [SELF-REPORTED] 20.44
• [SELF-REPORTED] −3.04%
• [SELF-REPORTED] −14.69%
• [SELF-REPORTED] 187.67 / 172.37 / 112.60
• [PARTIAL] +1.32% / +1.07% / +0.99% (unmatched: 1.07, 0.99)
• [PARTIAL] 55.1 / 36.5 / 54.0 (unmatched: 36.5)
• [SELF-REPORTED] 165.36 / 42.39
• [PARTIAL] −0.18% / −0.31% (unmatched: 0.18)
• [PARTIAL] 41.0 / 38.1 (unmatched: 38.1)
• [SELF-REPORTED] n/f = not fetched.
• [PARTIAL] † Two pulled panels disagree on SPY's RSI-14 (50.3 vs 62.8); I report the lower and flag the conflict rather than choosing silently.* (unmatched: 50.3, 62.8)
• [PARTIAL] First, small caps barely participated: IWM +0.41% versus +0.85% to +0.97% for large caps, with the Russell 2000 down 4.88% over 20 days. (unmatched: 0.41, 4.88)
• [PARTIAL] Second, the leadership came from sectors that are badly negative over 20 days (XLI +1.07% on the day but roughly −7% over 20 days; XLY +0.89% on the day but −4.6% over 20 days) — mean-reversion into laggards, not fresh momentum. (unmatched: 1.07, 0.89)
• [PARTIAL] Third, the rate backdrop was actively hostile: the 10-year at 4.975% sits at the 99th percentile of its 52-week range with RSI-14 of 73.5, and the Fed was being priced for a hike, not a cut, days later. (unmatched: 73.5)
• [SELF-REPORTED] The dispersion on the day came almost entirely from idiosyncratic single names, not macro.
• [PARTIAL] The two largest gainers (DELL +11.98%, HPE +12.44%) were one AI-hardware theme; the three largest losers (SMR −15.82%, OKLO −9.10%, LEU −8.21%) were one capital-structure-and-downgrade cohort. (unmatched: 11.98, 12.44, 15.82)
• [UNSUPPORTED] The honest limits: no P/E, valuation multiple, analyst target or insider-filing data was retrieved for any ticker, so this recap describes the session but supports no valuation or informed-money conclusion.
• [SELF-REPORTED] 2026-09-13 itself has no market data because markets were closed. If what you wanted was Monday's action, that session had not yet occurred as of this report.
• [PARTIAL] Dow close conflict, unresolved. The recap pages print ~52,657 (one with a malformed "52,6572"); the pulled DJI bar and the DIA ETF cross-check both imply ~52,573–52,578. (unmatched: 52657, 52573, 52578)
• [UNSUPPORTED] Ten-year yield direction is disputed. My pulled TNX shows +0.63% on the day and Investrade says yields "remained higher," but EconCurrents states the 10-year "moved lower." Two of three point higher; I report the pulled figure. (unmatched: 0.63)
• [PARTIAL] Oil settlement figures disagree across three sources ($100.05 −2.37% / $100.13 −2.29% / $100.60 −1.8%). (unmatched: 100.6)
• [PARTIAL] Two sources are excluded as unreliable on this session and are not used anywhere above: tickerdaily.com (asserted the S&P closed −1.2% "on rate hike fears," contradicted by AP, Investopedia, Investrade and four independent ETF price pulls) and stocksignal24.com (quoted "S&P 500 … at 713.94," an ETF-scale number, and "Healthcare led the advance" against a pulled XLV of −0.18%). (unmatched: 0.18)
• [SELF-REPORTED] No dated in-window source found identifying a catalyst for ACVA, FEIM, ALB, CLX, MRNA or the BDRX/MKDW/FTFT microcap moves; those catalysts are recorded as unidentified rather than inferred.

Detailed Findings

Round 0 · Finding 1

US Equity Market Recap — Anchor Session: Friday, 2026-09-11

Report prepared 2026-09-13. All data pulled live during this run.

1. Direct Answer: Were US markets open on 2026-09-13?

No. US equity markets were CLOSED on Sunday, 2026-09-13. The most recent completed regular trading session is Friday, 2026-09-11.

Two independent grounds establish this:

(a) Calendar arithmetic. 2026-09-13 is a Sunday. The NYSE's own published trading hours specify a Core Trading Session of 9:30 a.m. to 4:00 p.m. ET on business days, with a Closing Auction at 4:00 p.m. ET — there is no weekend session (https://www.nyse.com/trade/hours-calendars, fetched this run).

(b) Primary exchange holiday record. I fetched the New York Stock Exchange's official Holidays & Trading Hours page (https://www.nyse.com/trade/hours-calendars — canonical URL https://www.nyse.com/markets/hours-calendars). The complete NYSE 2026 full-closure list is: New Year's Day (Thu Jan 1), Martin Luther King Jr. Day (Mon Jan 19), Washington's Birthday (Mon Feb 16), Good Friday (Fri Apr 3), Memorial Day (Mon May 25), Juneteenth (Fri Jun 19), Independence Day observed (Fri Jul 3), Labor Day (Mon Sep 7), Thanksgiving (Thu Nov 26), Christmas (Fri Dec 25). Early closes are Fri Nov 27 and Thu Dec 24, 2026 (1:00 p.m. ET).

• No holiday falls on 2026-09-11, 2026-09-12, or 2026-09-13. The nearest holiday is Labor Day, Monday 2026-09-07 — six days before the anchor session — and the next is Thanksgiving, Thursday 2026-11-26.
• Therefore Friday 2026-09-11 was a normal full trading day, and Sunday 2026-09-13 was a weekend closure.

Caveat on source dating: the NYSE calendar page is an undated evergreen primary record, so it does not itself carry an in-window publication date. Its content is corroborated by an in-window secondary source: "The 2026 holiday schedules of NYSE and Nasdaq do not include 11th September as a market holiday. The next scheduled US stock-market holiday after Labour Day on 7th September is Thanksgiving Day on 26th November" — Dhan, https://dhan.co/blog/us-stocks/is-the-us-stock-market-closed-on-9-11-11th-september-2026/ (retrieved 2026-09-13). The Nasdaq's own calendar page was NOT fetched in this run — flagged as unfetched below.

Independent confirmation of the session date from price data itself: my pull of finance_data action=history for SPY returned daily bars whose last_bar timestamp is 2026-09-11 13:30:00 (UTC), i.e. the 9:30 a.m. ET open of Friday 2026-09-11. No bar exists dated 2026-09-12 or 2026-09-13. This is direct evidence from the price series that the last completed session is 2026-09-11.

2. Major Index Performance — Session of Friday, 2026-09-11

…(truncated — the summary above captures the substance)

Round 0 · Finding 2

US Equity Market Recap — Reporting Session: Friday, 2026-09-11

1. Executive Summary

US equity markets were CLOSED on 2026-09-13. That date is a Sunday. The most recent completed trading session in the requested window (2026-09-11..2026-09-13) is Friday, 2026-09-11 — a normal trading day (the prior US market holiday was Labor Day, Monday 2026-09-07; the next is Thanksgiving, 2026-11-26, per https://dhan.co/blog/us-stocks/is-the-us-stock-market-closed-on-9-11-11th-september-2026/). This recap therefore covers 2026-09-11, and all figures below refer to that date unless stated otherwise.

On 2026-09-11 all four major US indices closed higher, snapping a four-session losing streak, after the August CPI print landed close to expectations and oil prices fell. All figures below come from tools executed in this run.

2. Index Levels — Session of 2026-09-11

Primary source: Market Digest, dated datePublished 2026-09-11T21:06:44Z — https://stockmarketwatch.com/digest/2026-09-11

Independent ETF-proxy cross-check pulled via finance_data action=analyze (all with last_bar: 2026-09-11):

The ETF moves corroborate the digest's index moves to within a few basis points in every case (SPY +0.85% vs S&P +0.86%; DIA +0.97% vs Dow +0.98%; IWM +0.41% vs Russell +0.45%). Confidence: high on direction and magnitude of the 2026-09-11 move.

…(truncated — the summary above captures the substance)

Round 0 · Finding 3

US Equity Market Recap — session of Friday 2026-09-11 (markets closed 2026-09-12 and 2026-09-13)

1. Executive Summary

US equity markets were CLOSED on 2026-09-13. That date was a Sunday. Every data series I pulled in this run terminates at a last daily bar of 2026-09-11 13:30 UTC (09:30 ET) — SPY, DIA, QQQ, IWM, all eleven sector ETFs, and every single stock — which is the standard signature of a market that has not traded since the prior Friday. Multiple in-window sources explicitly label 2026-09-11 "Friday" (eOption closing recap, AP News, Stocktwits).

The most recent completed session this report covers is Friday, 2026-09-11. The next session is Monday 2026-09-14.

Headline result for 2026-09-11: a relief bounce that snapped a four-session losing streak but did not rescue the week. Stocks opened higher and stayed higher; the S&P 500, Dow and Nasdaq all rose roughly +0.9% to +1.0%, the Russell 2000 lagged at about +0.5%, and nine of eleven sectors closed green. The bounce came from a cooling in oil and an August CPI report that landed in line on the headline, even though core CPI ran slightly hot — a combination that kept the market's ~90% odds of a Fed rate hike the following week intact. Every index still finished the week of 2026-09-07 through 2026-09-11 lower.

2. Key Findings (with confidence levels)

…(truncated — the summary above captures the substance)

Round 0 · Finding 4

US Equity Market Recap — Most Recent Completed Session

1. Executive Summary

US equity markets were CLOSED on 2026-09-13 (Sunday). The most recent completed trading session is Friday, 2026-09-11. Every figure below refers to the 2026-09-11 session. All data was pulled live during this run from finance_data (action=analyze, interval=1d); the tool's last_bar for every symbol confirms 2026-09-11 13:30:00 UTC as the most recent bar.

That session was a broadly positive, low-volatility risk-on day: all four major indices rose, 9 of 11 SPDR sector ETFs advanced, and the CBOE VIX fell sharply. The one clear negative was the 10-year Treasury yield, which pushed to 4.976% — its 52-week high (range position 99.1%) — a macro headwind that did not stop equities from rallying.

Critical disclosure up front: I could NOT fetch individual-stock movers or news headlines. finance_news failed twice with HTTP Error 429: Too Many Requests and returned 0 results. I have no news/browser-sourced URL for this session. Per the mission constraint, I am flagging those items as UNFETCHED rather than estimating them — see Section 5.

2. Key Findings

2.1 Market status (Confidence: HIGH)

• 2026-09-13 is a Sunday; US equity markets were closed. Reported session: Friday, 2026-09-11.
• Corroboration: every index and ETF series returned last_bar: "2026-09-11 13:30:00" and bars: 250, with no 2026-09-12 or 2026-09-13 bar present (source: finance_data analyze, SPY/SPX/DJI/IXIC/RUT, pulled 2026-09-13).

2.2 Major index levels — session of 2026-09-11 (Confidence: HIGH)

All four levels and percentage moves are from finance_data analyze pulls executed during this run. Note the caret-prefixed forms (^GSPC, ^DJI, ^IXIC, ^RUT) returned "no data on any exchange" — the bare forms above succeeded. Also note that despite the up day, all four indices are negative on both 5-day and 20-day windows, so the 2026-09-11 session was a bounce inside a short-term pullback, not a breakout.

…(truncated — the summary above captures the substance)

Round 0 · Finding 5

US Equity Market Recap — Session of Friday, 2026-09-11

Report prepared 2026-09-13. All data points below carry the calendar date they refer to.

1. Executive Summary

US equity markets were CLOSED on 2026-09-13. 2026-09-13 fell on a Sunday. This is corroborated by the data itself: every instrument pulled via finance_data on this run returns its final daily bar at 2026-09-11 13:30:00 (SPY, DIA, QQQ, IWM, VIXY, HPE, DELL, KR, INTC, ORCL, ADBE, ACVA, FEIM), and no bar exists for 2026-09-12 or 2026-09-13. Multiple fetched news sources also label Friday, September 11, 2026 as the session day, and Investopedia describes the week as a "four-session trading week" (Labor Day, Monday 2026-09-07, was a market holiday).

The most recent completed trading session is therefore Friday, 2026-09-11.

That session was a broad relief rally: all four major averages closed higher, snapping four-session losing streaks, after the August CPI report landed essentially in line with expectations and oil prices pulled back from a spike. The rally was not enough to save the week — the S&P 500, Dow and Nasdaq all finished the week of 2026-09-07..2026-09-11 lower.

Macro backdrop driving the session: a war between the US and Iran, a closed Strait of Hormuz, WTI crude at roughly $100/barrel, a 10-year Treasury yield near 4.98%, and markets pricing a ~90% probability of a Fed rate hike (not a cut) at the 2026-09-15/16 FOMC meeting.

2. Key Findings (with confidence levels)

…(truncated — the summary above captures the substance)

Round 0 · Finding 6

US Equity Market Recap — Session of Friday, 2026-09-11 (report date: Sunday, 2026-09-13)

1. Executive Summary

US equity markets were CLOSED on 2026-09-13. 2026-09-13 is a Sunday, and the most recent completed trading session was Friday, 2026-09-11. Every price, percentage and indicator below refers to the 2026-09-11 session (or, where stated, to the week ended 2026-09-11), pulled live from finance_data and from pages fetched during this run.

Note on verification scope: the "closed on 2026-09-13" conclusion is inferred from (a) the calendar day being a Sunday and (b) every pulled series' last bar being dated 2026-09-11. I did not fetch the NYSE/Nasdaq holiday calendar page, so the closure is not verified against a primary exchange record — it is a regular weekend closure, not a holiday.

The 2026-09-11 session was a rebound: all four headline indices rose, snapping a four-day losing streak for the S&P 500, Dow and Nasdaq, though all three still finished the week lower. Leadership was concentrated in technology hardware on the AI-infrastructure trade, while healthcare and utilities lagged.

2. Key Findings

2.1 Headline index levels and 1-day % change — session of 2026-09-11

All from finance_data action=analyze (daily bars; last_bar: 2026-09-11), except where cross-checked against a fetched page.

Dow discrepancy (flagged, not resolved): the Investrade closing table (https://investrade.com/market-review-september-11-2026/) and the eOption mirror (https://www.eoption.com/market-review-september-11-2026/) both print a Dow close of "52,657" (+508.71 pts, 0.98%), while the finance_data pull for DJI returned 52,578.27 (+0.978%). The Investrade table as rendered contains a typo ("52,6572"). The two agree on the percentage (+0.98%) but differ on the level by ~79 points. I could not resolve which is correct; treat the Dow level as carrying that uncertainty.

…(truncated — the summary above captures the substance)

Investigation Trail

Round 0

• Was the US stock market open on Sunday 2026-09-13? Confirm the NYSE/Nasdaq holiday and weekend calendar status for 2026-09-13 and identify the date of the most recent completed regular trading session (expected Friday 2026-09-11), citing an exchange calendar or market-news source published between 2026-09-11 and 2026-09-13.
• What were the closing levels and 1-day percent changes for the S&P 500, Dow Jones Industrial Average, Nasdaq Composite, Nasdaq 100 and Russell 2000 on the most recent completed US trading session before or on 2026-09-13 (pull via finance_data analyze/quote for ^GSPC, ^DJI, ^IXIC, ^NDX, ^RUT)? Also report the VIX level and change and the 10-year Treasury yield on that date.
• Which individual US stocks were the biggest movers on the most recent completed trading session on or before 2026-09-13 — at minimum the top 3 gainers and top 3 losers among large-cap/S&P 500 constituents — and what was each one's percent move? Use finance_data analyze on each candidate ticker plus finance_news headlines dated 2026-09-11..2026-09-13.
• What specific macro catalysts drove US equity price action on 2026-09-11..2026-09-13? Identify any economic data releases (CPI, PPI, jobs report, retail sales, Fed speakers or FOMC-related news), and the prior-session/next-session Fed rate expectations, with the exact announcement date and the market's reaction as reported in finance_news published 2026-09-11..2026-09-13.
• How did the 11 GICS sectors (or their SPDR sector ETF proxies XLE, XLF, XLK, XLV, XLI, XLP, XLY, XLU, XLB, XLRE, XLC) perform on the most recent completed US trading session on or before 2026-09-13, and was market breadth positive or negative (advancers vs decliners / equal-weight RSP vs cap-weight SPY)?
• Which corporate events in the window 2026-09-11..2026-09-13 (earnings releases, guidance changes, M&A announcements, FDA decisions, analyst upgrades/downgrades, or insider Form 4 filings by executives at major companies) explain the single-name moves, verified via finance_news and finance_insider with publication/filing dates inside that window?

Sources

• https://www.nyse.com/trade/hours-calendars
• https://www.nyse.com/markets/hours-calendars
• https://dhan.co/blog/us-stocks/is-the-us-stock-market-closed-on-9-11-11th-september-2026/
• https://www.eoption.com/market-review-september-11-2026/
• https://investrade.com/market-review-september-11-2026/
• https://apnews.com/article/wall-street-stocks-dow-nasdaq-67a463295d9ea178d7802ca4338a6eb5
• https://thedesperatetrader.com/recap/2026-09-11
• https://stocksetups.com/articles/top-stock-movers-2026-09-11
• https://tradingstrategyguides.com/stock-market-preview-september-11-2026-cpi-and-oracle-in-focus/
• https://www.investopedia.com/stock-market-today-dow-jones-s-and-p-500-09112026-12115543
• https://tickerdaily.com/article/stock-market-today-friday-september-11-2026-sandp-500-closes-lower-on-rate-hike-fears
• https://www.cnbc.com/2026/09/10/stock-market-today-live-updates.html
• https://www.financialjuice.com/
• https://www.stocksignal24.com/blog/us-stock-market-closing-bell-2026-09-11
• https://www.nyse.com/markets/hours-calendars?ecid=EMOWNSGCBUENRL03
• https://market-holiday.com/markets/nyse/holidays/2026
• https://www.nyse.com/publicdocs/nyse/ICE_NYSE_2026_Yearly_Trading_Calendar.pdf
• https://www.calendarlabs.com/nyse-market-holidays-2026/
• https://stockmarkethours.org/stock-market-holidays-2026
• https://stockmarkethours.org/nyse-holidays-2026
• https://www.aistockselection.com/en/us-stock-market-holidays-2026/
• https://www.financecalendar.com/stock-market-holidays/
• https://ir.theice.com/press/news-details/2025/NYSE-Group-Announces-2026-2027-and-2028-Holiday-and-Early-Closings-Calendar/default.aspx
• https://www.barchart.com/press-releases/36761137/nyse-group-announces-2026-2027-and-2028-holiday-and-early-closings-calendar
• https://stockmarketwatch.com/digest/2026-09-11
• https://www.stl.news/stock-market-today-friday-september-11th-2026/
• https://alphatradernews.com/2026/09/11/september-11-2026-market-roundup-nyse-close-bullish/
• https://www.ainvest.com/market/movers-monitor/sep-11-2026-sep-11-2026/?page=1
• https://www.cot-trading.com/post?slug=top-stock-movers-september-11-2026
• https://thedesperatetrader.com/biggest-gainers-today
• https://tradestie.com/news/top-50-stocks-to-buy-now-september-11-2026-update-3-added-3-dropped-20260911/
• https://www.thestreet.com/stock-market-today/stock-market-today-dow-jones-sp-500-nasdaq-updates-sept-11-2026
• https://econcurrents.substack.com/p/11-september-2026-market-close-and
• https://www.financialjuice.com/News/9760570/
• https://www.financialjuice.com/News/9760616/
• https://www.financialjuice.com/News/9760615/
• https://www.financialjuice.com/News/9760652/
• https://www.financialjuice.com/News/9760526/
• https://www.financialjuice.com/News/9760530/
• https://premarketprice.com/premarket-gainers/2026-09-11
• https://www.strasmore.com/blog/biggest-stock-movers-2026
• https://www.stocktitan.net/rankings/stock-movers-today
• https://www.ainvest.com/market/movers-monitor/aug-11-2026-sep-09-2026/?page=1
• https://hdfcsky.com/news/top-gainers-losers-september-11-2026-at-12-pm
• https://www.marketbeat.com/pre-market-movers/
• https://stocksetups.com/movers/today
• https://stocktwits.com/news-articles/markets/equity/s-and-p-500-dow-break-past-four-day-loss-to-end-higher-as-investors-eye-fed-meeting-next-week-dell-hpe-el-wmt-in-focus/cZtXyR4RBbK
• https://247wallst.com/investing/2026/09/11/bloom-energy-climbs-7-as-fuel-cell-bid-spreads-beyond-its-s-p-500-add-fuelcell-energy-rises-4-plug-power-inches-higher/
• https://247wallst.com/investing/2026/09/11/moderna-rallies-8-on-2026-melt-up-momentum-even-while-biontech-and-merck-stay-flat/
• https://247wallst.com/investing/2026/09/11/storage-stocks-slide-as-profit-taking-follows-big-run-seagate-falls-4-sandisk-drops-3-micron-holds-flat/
• https://247wallst.com/investing/2026/09/11/chewy-slides-6-on-second-downgrade-in-two-days-as-jpmorgan-cuts-target-to-24-petco-stays-put-freshpet-nudges-higher/
• https://finance.yahoo.com/economy/policy/articles/cpi-3-4-expected-wherefor-143000839.html
• https://www.whendomarketsopen.com/market-history/2026-09-11/
• https://www.marketsfn.com/article/sp-500-bull-bear-radar-september-11-2026
• https://www.tipranks.com/news/sp-500-top-stock-gainers-today-9-11-26
• https://tradingstrategyguides.com/stock-market-recap-september-11-2026-dow-drops-as-oil-tests-100/
• https://www.stl.news/sp-500-winners-and-losers-this-week-sept-11-2026/
• https://csimarket.com/markets/Stocks.php?days=ytd
• https://www.financialjuice.com/News/9760652/Ukmto-Vessel-hit-by-unidentified-projectile-while-passing-Strait-of-Hormuz.aspx
• https://www.financialjuice.com/News/9760737/Iranian-commercial-ship-hit-near-Qeshm-Island-one-dead-and-three-injured---state-TV.aspx
• https://www.financialjuice.com/News/9760570/Iranian-source-to-Tasnim-News-Agency-Strait-of-Hormuz-will-remain-closed-despite-the-Iran-Oman-agreement.aspx

Trace Index

Tool-call traces are persisted under /srv/swarm_web_runs/run-1789274299930-0005/finance_output/traces.