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: 2026-09-07T04:52:09.678196918+00:00

Coverage window: 2026-09-07 – 2026-09-07

Rounds: 1

Status: COMPLETE

Evidence: 72 claims · 37 sourced · 11 partial · 3 unsupported · 20 self-reported (no independent source) · 8 single-source

Executive Summary

As of 2026-09-07: there was no US stock-market session today. The NYSE and Nasdaq were closed for Labor Day (NYSE official calendar: https://www.nyse.com/trade/hours-calendars; Nasdaq Trader Alert #2026-47: https://www.nasdaqtrader.com/TraderNews.aspx?id=ETS2026-47). Daily price bars for every major index and sector ETF end on Friday, 2026-09-04 — no 2026-09-07 bar exists for SPX, IXIC, DJI, RUT, or VIX. So the "today" answer is: no US cash-equity trading occurred on 2026-09-07, and there are no index levels, movers, or drivers to report for that day. The last completed session — the correct reference for "the market as it stands" — was Friday 2026-09-04: S&P 500 −0.38%, Dow −0.51%, Nasdaq Composite −0.29%, Russell 2000 +0.25% (https://www.cnbc.com/2026/09/03/stock-market-today-live-updates.html; https://apnews.com/article/stock-market-dow-nasdaq-jobs-ebc11cfa2cf8baf4491bf3d4199c1d74). The final 9/4 session was driven by a hotter-than-expected August jobs report that repriced September Fed rate-hike odds to ~58%. Markets reopen Tuesday, 2026-09-08.

The Last Completed US Session — Friday, September 4, 2026

Sources: finance_data history (CBOE/Nasdaq feeds, last bar 09-04) + CNBC/AP recaps, which agree to the decimal; week ended 9/4: S&P +0.1%, Nasdaq +0.4%, Dow −0.3% (AP); YTD: S&P +12.8%, Dow +11.1%, Nasdaq +14.0%, Russell +19.9% (AP). One small vendor discrepancy: the finance_data Dow feed closes at 53,419.33 (−0.507%) vs. AP/CNBC 53,414.25 — decimal-level only. Constituent-weighted index P/E and 50/200-day trend panel were not fetched.

What drove the 9/4 session

• The BLS August employment report (released 9/4): +162,000 nonfarm payrolls vs. ~53,000–55,000 consensus (consensus figure differs slightly by outlet), unemployment steady at 4.1%, June/July revised up (CNBC, AP, Investopedia: https://www.investopedia.com/stock-market-today-dow-jones-s-and-p-500-09042026-12107971; TheStreet).
• The Fed repricing: September FOMC (Sept 15–16) rate-hike odds rose to 58% from ~49–51% the prior day (CME FedWatch via Barron's and CNBC, both dated 9/4); the funds target range is 3.50%–3.75%.
• The yield mechanism: 2-year Treasury hit 4.374% — a fresh 52-week high and its highest since January 2025; the 10-year was ~4.78% (TheStreet, CNBC, Investopedia, all 9/4). That is the channel the same-day coverage cites for the equity decline: "Dow tumbles more than 260 points after strong jobs report reignites rate hike fears" (CNBC headline).
• Character of the tape: not a broad risk-off day. NYSE average net advancers were only −89 and Nasdaq −40 ("Balanced" sessions, per https://www.thetrading.tools/nyse-advance-decline and /nasdaq-advance-decline, updated to the 9/4 close); Nasdaq composite volume ~5.66B shares vs. a ~6.70B 20-day average (below-average, pre-holiday tape). The Russell 2000 rose while megacap benchmarks fell, and the VIX closed just 14.53 (+1.47%), near the bottom of its 52-week range (13.80–20.88) (finance_data; TheStreet 9/4).

Sector and stock movers, 9/4 session

Sector data: finance_data analyze, last bar 9/4. Technology led on semis: PHLX Semiconductor Index +3.4% ("Chip Stocks Pop Despite Jobs Day Weakness," Barron's 9/4: https://www.barrons.com/livecoverage/stock-market-news-today-090426); SOXX ≈+3.5%, a DRAM ETF ≈+6.5%, NVDA up <1% after +3% Thursday (Investopedia 9/4). Discretionary lagged on company-specific 9/4 news: Tesla −5.92% to $354.08, its worst day since July 23 (−15%), on post-Cybercab-launch disappointment, wiping out the prior session's gains (CNBC 9/4 blog entry); Lululemon −17% on weak guidance (Investopedia 9/4).

The day's largest percentage movers were mostly micro-caps with no tool-verifiable catalysts: IMRN +62.2% to $1.80 (secondary-sourced PROIBS launch, ~19× volume — no company PR verified), CDTG +46.7%, AOUT +44.7%, ONCO +38.0%, GRNQ +30.8% (52-week high, no news), GPRO +22.3% to $1.70 (+183% over 5 sessions, catalyst not verified), AEHR +13.1% to $86.26 (https://stocksetups.com/articles/top-stock-movers-2026-09-04; tool-confirmed prices). No high-market-cap advancer with same-day news was identified in the fetched sources. GWRE (−19.9%) and FICO (−16.7%) appear as 9/4 decliners in one market recap but were not verified against tool data.

What Actually Traded on 2026-09-07 (the Holiday Tape)

No US economic data, Fed/Treasury communications, or S&P 500-magnitude corporate/analyst events dated 9/7 were found (the only 9/7 earnings reporters were small-caps/ADRs — GRFS, CHRN, AIV, CURR, DLNG, CBAT

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] Daily price bars for every major index and sector ETF end on Friday, 2026-09-04 — no 2026-09-07 bar exists for SPX, IXIC, DJI, RUT, or VIX.
• [PARTIAL] The last completed session — the correct reference for "the market as it stands" — was Friday 2026-09-04: S&P 500 −0.38%, Dow −0.51%, Nasdaq Composite −0.29%, Russell 2000 +0.25% (https://www.cnbc.com/2026/09/03/stock-market-today-live-updates.html; https://apnews.com/article/stock-market-dow-nasdaq-jobs-ebc11cfa2cf8baf4491bf3d4199c1d74). (unmatched: 0.25)
• [UNSUPPORTED] 1d pts
• [UNSUPPORTED] 1d %
• [UNSUPPORTED] 5d %
• [SELF-REPORTED] −29.11
• [SELF-REPORTED] +0.09%
• [SELF-REPORTED] 53.4
• [PARTIAL] 6,316.91–7,816.70 (~1.3% below high) (unmatched: 6316.91, 7816.7)
• [SELF-REPORTED] −77.07
• [SELF-REPORTED] 52.2
• [SELF-REPORTED] 20,690.25–27,190.21
• [SELF-REPORTED] −271.86
• [SELF-REPORTED] −1.15%
• [SELF-REPORTED] 50.8
• [SELF-REPORTED] 45,057.28–54,744.33
• [SELF-REPORTED] +7.38
• [SELF-REPORTED] +0.11%
• [SELF-REPORTED] 45.2
• [SELF-REPORTED] 2,303.46–3,069.71
• [PARTIAL] Sources: finance_data history (CBOE/Nasdaq feeds, last bar 09-04) + CNBC/AP recaps, which agree to the decimal; week ended 9/4: S&P +0.1%, Nasdaq +0.4%, Dow −0.3% (AP); YTD: S&P +12.8%, Dow +11.1%, Nasdaq +14.0%, Russell +19.9% (AP). (unmatched: 12.8, 11.1, 19.9)
• [SELF-REPORTED] One small vendor discrepancy: the finance_data Dow feed closes at 53,419.33 (−0.507%) vs. AP/CNBC 53,414.25 — decimal-level only.
• [PARTIAL] The BLS August employment report (released 9/4): +162,000 nonfarm payrolls vs. ~53,000–55,000 consensus (consensus figure differs slightly by outlet), unemployment steady at 4.1%, June/July revised up (CNBC, AP, Investopedia: https://www.investopedia.com/stock-market-today-dow-jones-s-and-p-500-09042026-12107971; TheStreet). (unmatched: 53000, 55000, 4.1)
• [PARTIAL] The Fed repricing: September FOMC (Sept 15–16) rate-hike odds rose to 58% from ~49–51% the prior day (CME FedWatch via Barron's and CNBC, both dated 9/4); the funds target range is 3.50%–3.75%. (unmatched: 3.5, 3.75)
• [PARTIAL] The yield mechanism: 2-year Treasury hit 4.374% — a fresh 52-week high and its highest since January 2025; the 10-year was ~4.78% (TheStreet, CNBC, Investopedia, all 9/4). (unmatched: 4.374)
• [PARTIAL] NYSE average net advancers were only −89 and Nasdaq −40 ("Balanced" sessions, per https://www.thetrading.tools/nyse-advance-decline and /nasdaq-advance-decline, updated to the 9/4 close); Nasdaq composite volume ~5.66B shares vs. a ~6.70B 20-day average (below-average, pre-holiday tape). (unmatched: 5.66, 6.7)
• [PARTIAL] The Russell 2000 rose while megacap benchmarks fell, and the VIX closed just 14.53 (+1.47%), near the bottom of its 52-week range (13.80–20.88) (finance_data; TheStreet 9/4). (unmatched: 52, 13.8, 20.88)
• [SELF-REPORTED] +0.12%
• [SELF-REPORTED] −0.79%
• [SELF-REPORTED] −0.87%
• [SELF-REPORTED] −1.05%
• [PARTIAL] Technology led on semis: PHLX Semiconductor Index +3.4% ("Chip Stocks Pop Despite Jobs Day Weakness," Barron's 9/4: https://www.barrons.com/livecoverage/stock-market-news-today-090426); SOXX ≈+3.5%, a DRAM ETF ≈+6.5%, NVDA up <1% after +3% Thursday (Investopedia 9/4). (unmatched: 3.4, 3.5, 6.5)
• [PARTIAL] Discretionary lagged on company-specific 9/4 news: Tesla −5.92% to $354.08, its worst day since July 23 (−15%), on post-Cybercab-launch disappointment, wiping out the prior session's gains (CNBC 9/4 blog entry); Lululemon −17% on weak guidance (Investopedia 9/4). (unmatched: 354.08)
• [PARTIAL] The day's largest percentage movers were mostly micro-caps with no tool-verifiable catalysts: IMRN +62.2% to $1.80 (secondary-sourced PROIBS launch, ~19× volume — no company PR verified), CDTG +46.7%, AOUT +44.7%, ONCO +38.0%, GRNQ +30.8% (52-week high, no news), GPRO +22.3% to $1.70 (+183% over 5 sessions, catalyst not verified), AEHR +13.1% to $86.26 (https://stocksetups.com/articles/top-stock-movers-2026-09-04; tool-confirmed prices). (unmatched: 1.7)

Detailed Findings

Round 0 · Finding 1

RESEARCH FINDINGS — Sector leadership & market internals for the US session in question (2026-09-07 / last completed session)

1. Resolution of the holiday question: there was NO US session on 2026-09-07. The last completed session is Friday 2026-09-04, and every "day-of" figure below is that session, explicitly labeled.

• Primary record — NYSE's official holiday/trading-hours page lists Labor Day 2026: Monday, September 7 as a closure (https://www.nyse.com/trade/hours-calendars).
• Corroboration dated the prior session: "U.S. stock and bond markets will be closed Monday for Labor Day" (Investopedia, updated Sept. 4, 2026, 04:21 PM EDT — https://www.investopedia.com/stock-market-today-dow-jones-s-and-p-500-09042026-12107971).
• Tool-level confirmation: every series I pulled (finance_data history for SPX, DJI, NDX, RUT, IXIC, VIX) has its last bar on 2026-09-04; there is no 2026-09-07 bar for any index, sector ETF, or VIX — consistent with full closure of NYSE-listed and Nasdaq-listed cash equities and the Cboe VIX. (A Nasdaq-specific holiday page was not fetched; the absence of any Nasdaq index bar on 09-07 plus NYSE's primary calendar is the basis for "both exchanges closed.")

2. Reference closes for the 09-04 session (anchored in pulled tool data + same-day articles):

• S&P 500: 7,718.60, −0.38% (finance_data SPX close 7,718.60, change −0.376%; identical print in CNBC's Sept-4 live-blog close post, updated Fri Sep 4 4:16 PM EDT — https://www.cnbc.com/2026/09/03/stock-market-today-live-updates.html).
• Dow Jones Industrial Average: −271.86 points / −0.51% to 53,414.25 per CNBC (same source); finance_data DJI shows 53,419.33, −0.507% (small vendor difference in the last decimal print — both quoted).
• Nasdaq Composite: 26,506.99, −0.29% — identical in CNBC and finance_data IXIC (change −0.29%).
• Russell 2000: 2,975.65, +0.25% — CNBC's same-day quote widget shows 2,975.648 (+7.377, +0.25%); finance_data RUT 2,975.648, +0.249%.
• Weeks ended 09-04: Nasdaq +0.4%, S&P 500 +0.1%, Dow −0.3% (Investopedia and CNBC, both dated Sept 4).
• Note on source quality: one search hit ("tickerdaily.com") gave wildly inconsistent index levels (S&P ~5,847, Nasdaq ~18,203) that contradict CNBC, AP, Barron's, Investopedia, TheStreet and every pulled data series; it was excluded as unreliable.

3. S&P 500 sector leadership/lagging — session of 09-04 (computed from pulled sector-SPDR data; finance_data action=analyze, daily bars, 1-day % change on the last bar = the 09-04 session):

…(truncated — the summary above captures the substance)

Round 0 · Finding 2

Findings — US stock market performance on Monday 2026-09-07 (Labor Day)

1. Holiday question — RESOLVED: US cash equity markets did NOT trade on 2026-09-07. The NYSE's official holiday calendar (fetched directly) lists "Labor Day — Monday, September 7" for 2026, on which all NYSE markets are closed: https://www.nyse.com/trade/hours-calendars (page fetched 2026-09-07). Corroborating data evidence: daily OHLC series pulled for all four index benchmarks (^GSPC, ^IXIC, ^DJI, ^RUT via Yahoo Finance chart API) contain no bar dated 2026-09-07; the final bar in each series opens at epoch 1788528600 = Fri 2026-09-04 09:30 ET and closes at ~16:33 ET Friday, with no subsequent session: https://query1.finance.yahoo.com/v8/finance/chart/%5EGSPC?interval=1d&range=8d (same endpoint pattern for ^IXIC/^DJI/^RUT). Nasdaq's closure on 9/7 is additionally corroborated by the absence of any ^IXIC bar for that date and by multiple secondary 2026-dated calendar pages surfaced in search (e.g., https://www.financecalendar.com/stock-market-holidays/ — search snippet only, page not fetched). Confidence: high.

2. Last completed session = Friday 2026-09-04 — closing levels and 1-day % changes (bar-to-bar from pulled Yahoo series; cross-verified against AP's wire recap published 2026-09-04 20:30 UTC, "Updated 4:30 PM EDT, September 4, 2026": https://apnews.com/article/stock-market-dow-nasdaq-jobs-ebc11cfa2cf8baf4491bf3d4199c1d74):

Reference closes used for the daily change (previous session 2026-09-03, from same pulled series): S&P 7,747.71; Nasdaq 26,584.06; Dow 53,686.11; Russell 2,968.27. Week ended 9/4 (per AP, corroborated arithmetically against Aug-28 closes in the pulled series): S&P +0.1%, Dow −0.3%, Nasdaq +0.4%, Russell +0.1%. YTD through 9/4 (AP): S&P +12.8%, Dow +11.1%, Nasdaq +14.0%, Russell +19.9%. 52-week ranges from pulled meta: S&P 6,316.91–7,816.70 (close ~1.3% below high); Nasdaq 20,690.25–27,190.21; Dow 45,057.28–54,744.33; Russell 2,303.46–3,069.71. Confidence: high (two independent sources agree to the decimal).

…(truncated — the summary above captures the substance)

Round 0 · Finding 3

Findings: US market session and corporate-event flow on 2026-09-07 (Labor Day)

1. Threshold finding — US exchanges were CLOSED on 2026-09-07; there was no "today's session"

• NYSE closed. The NYSE holiday calendar (fetched 2026-09-07) lists "Labor Day — Monday, September 7" for 2026: https://www.nyse.com/trade/hours-calendars
• Nasdaq closed. Nasdaq's Equity Trader Alert #2026-47 (fetched) states: "Nasdaq U.S. Equities and Options markets will be closed on Monday, September 7, 2026, in observance of Labor Day": https://www.nasdaqtrader.com/TraderNews.aspx?id=ETS2026-47
• Price-feed confirmation. finance_data (action=history, 1d bars) returns no bar dated 2026-09-07 for S&P 500, Nasdaq Composite, Dow or Russell 2000; the last bar for all four is 2026-09-04 — matching the holiday.
• Futures were the only US equity-derivative surface, and only until midday: CME equity-index futures halted at 12:00 pm CT on the holiday, per financecalendar.com (fetched; page published 2026-09-02, i.e., a pre-schedule/background source, not same-day news): https://www.financecalendar.com/event/cme-futures-labor-day-equity-futures-halt-12-00-ct-2026-early-close/
• I attempted to pull E-mini futures bars (ES=F, NQ=F, YM=F, RTY=F) to capture that holiday futures tape; the call timed out — futures data flagged unfetchable in this session.

Consequence for the sub-question: no earnings, M&A or analyst action announced on 2026-09-07 could produce a same-day US cash-market stock reaction — the market was closed. Any such reaction can only print on Tuesday, 2026-09-08.

2. Reference-session levels (Friday 2026-09-04 close — explicitly NOT a 9/7 performance)

From finance_data history (all values as returned by the tool, last bar 2026-09-04):

An in-window secondary source (StrongBuyAnalytics, dated/updated 2026-09-07, generated the prior evening) corroborates the modest pre-holiday drift via ETF proxies (SPY −0.47%, QQQ −0.02%, IWM −0.06%; VIX ~14.52, +1.40%) and explicitly states "NYSE and Nasdaq are closed… there is no regular cash equity session": https://strongbuyanalytics.com/stock-market-outlook

3. Corporate events announced/dated 2026-09-07 — what the window actually contained

…(truncated — the summary above captures the substance)

Round 0 · Finding 4

Findings: US market performance on 2026-09-07 (Labor Day) — holiday resolution + same-day macro drivers

1. Holiday status — RESOLVED: US cash equities did NOT trade on 2026-09-07

2026-09-07 is a Monday (Labor Day, first Monday of September), and every source consulted agrees NYSE/Nasdaq were fully closed:

• Nasdaq Trader Equity Trader Alert #2026-47: "Nasdaq U.S. Equities and Options markets will be closed on Monday, September 7, 2026, in observance of Labor Day" (https://www.nasdaqtrader.com/TraderNews.aspx?id=ETS2026-47 — page body bot-walled/empty when fetched; title/alert text verified via search index only).
• CME Group Labor Day settlement notice (9/7/2026) and ICE Futures US 2026 Labor Day schedule confirm the holiday trading calendar (https://www.cmegroup.com/tools-information/holiday-calendar/files/2026/labor-day-holiday-settlement-times-2026.pdf ; https://www.ice.com/publicdocs/futures_us/exchange_notices/ICE_Futures_US_2026_LaborDayHoliday_20260708.pdf).
• Market-hours calendars: NYSE/Nasdaq closed Sept 7, 2026 (https://markethours.io/market-holidays/nyse/2026 ; https://www.financecalendar.com/futures-market-holidays/ ; https://legalunitedstates.com/is-the-stock-market-closed-on-labor-day/).
• Corroborated by the price feed itself: daily bars for SPX, IXIC, DJI, RUT all end at 2026-09-04 — no 2026-09-07 cash bar exists (finance_data history).
• Same-day confirmation inside the window: CNBC's Sept 7 live blog states "U.S. stock markets will be closed on Monday due to a holiday" (https://www.cnbc.com/2026/09/07/stock-market-today-live-updates.html, updated Mon Sep 7, 2026, 12:17 AM EDT).

Therefore, per the task's fallback branch: there is NO "today's" cash-equity session to explain. The correct reference is Friday 2026-09-04 (the last cash session), and what traded on 2026-09-07 was: CME index futures (early close 12:00 pm CT / 1:00 pm ET), commodities, FX, and Asia-Pacific cash markets (e.g., https://www.financecalendar.com/event/cme-futures-labor-day-equity-futures-halt-12-00-ct-2026-early-close/ ; https://www.kucoin.com/news/flash/us-markets-closed-on-sept-7-for-labor-day-futures-trading-ends-early).

2. Reference closes — Friday 2026-09-04 (last cash session; finance_data history)

…(truncated — the summary above captures the substance)

Round 0 · Finding 5

Findings — US stock market "2026-09-07" session: biggest decliners (last completed session edition)

0. Holiday question — resolved, with a caveat

There was NO US trading session on 2026-09-07. September 7, 2026 is US Labor Day (Monday), and NYSE/Nasdaq do not operate. Evidence:

• Pulled 1-day history for SPY/QQQ/DIA/IWM shows the last daily bar is dated 2026-09-04; no 2026-09-07 bar exists in the feed (finance_data history, symbols SPY,QQQ,DIA,IWM).
• Every same-day wrap treats Friday 9/4 as the market's latest session (CNBC live blog "Updated Fri, Sep 4 2026 4:16 PM EDT"; AP article dated/updated 2026-09-04T20:30:57Z, URL https://apnews.com/article/stock-market-dow-nasdaq-jobs-ebc11cfa2cf8baf4491bf3d4199c1d74), with the session described as occurring "ahead of the Labor Day weekend."
• Flag: I could not render the NYSE or Nasdaq holiday-calendar pages themselves (NYSE page returned an empty body; Nasdaq's holiday-schedule page timed out/404'd on fetch), so the closure is established from market data + same-day reporting rather than the exchanges' own calendar page. All figures below are for the last completed session, Friday 2026-09-04, explicitly labeled as such — none are "today's" closes.

1. The session being analyzed (Fri 2026-09-04): mixed tape — Dow/S&P down, small caps up

Index closes, quoted from CNBC's 9/4 live blog (https://www.cnbc.com/2026/09/03/stock-market-today-live-updates.html) and AP (same URL as above):

Tool-data corroboration (finance_data 1d history, last bar 2026-09-04, precomputed change_pct_1): SPY 770.19 (−0.385%) tracks the S&P's −0.38%; DIA 534.08 (−0.531%) tracks the Dow's −0.51%; IWM 296.01 (+0.278%) tracks the Russell's +0.25%. Note QQQ ended +0.18% at 718.96 — the Nasdaq-100 (large-cap tech) finished slightly up while the broader Nasdaq Composite fell, and small caps (IWM) outperformed. Week ended: S&P +0.1%, Dow −0.3%, Nasdaq +0.4%, Russell +0.1% (AP).

2. Biggest decliners of the 9/4 session — verified names and drivers

…(truncated — the summary above captures the substance)

Round 0 · Finding 6

Findings — US Market Performance on 2026-09-07 and the Session's Top Gainers

0. Threshold finding: 2026-09-07 was Labor Day — US exchanges were CLOSED

• The NYSE's official Holidays & Trading Hours page lists "Labor Day — Monday, September 7" for 2026 (https://www.nyse.com/trade/hours-calendars, fetched 2026-09-07). Nasdaq follows the same closure.
• Corroborated by the market data itself: daily OHLC pulled from the finance tools for S&P 500 (SPX), Nasdaq Composite (IXIC), Dow (DJI) and Russell 2000 (RUT) all end at 2026-09-04 13:30 — no daily bar exists for 2026-09-07.
• Consequence: there is no 2026-09-07 session to describe. Per the task's own rule, the reference session is the last completed one: Friday, September 4, 2026. Equally important: no 9/7-dated corporate news can be a driver of any session move — the 9/7 items in the news feed (China yuan fixing, Korea won strength, Hormuz shipping, German state election fallout — all dated 2026-09-07) are pre-session background for the next trading day, September 8, 2026, and are not used to explain anything below. Markets reopen 9/8.

1. Last completed session (Fri 2026-09-04) — index levels and returns

Closing levels and 1-day % changes pulled via finance_data (daily bars, last bar 2026-09-04), cross-checked against TheStreet's dated market wrap ("Sep 4, 2026 4:01 PM EDT — Market Wrap," fetched via archive capture of the 9/4 live blog: https://www.thestreet.com/stock-market-today/stock-market-today-dow-jones-sp-500-nasdaq-updates-sept-04-2026):

Point moves derived from the fetched closes: S&P ≈ −29, Nasdaq ≈ −77, Dow ≈ −272, Russell ≈ +7.4. The AP same-day roundup confirms direction: "Stocks fell on Wall Street and Treasury yields rose after a surprisingly strong report on the job market appeared to increase chances that the U.S. central bank could raise interest rates later this month" (https://apnews.com/article/stock-market-dow-nasdaq-jobs-ebc11cfa2cf8baf4491bf3d4199c1d74 — "How major US stock indexes fared Friday 9/4/2026").

2. The dated macro driver (2026-09-04, the only session driver that qualifies)

…(truncated — the summary above captures the substance)

Investigation Trail

Round 0

• Did US stock exchanges trade on Monday 2026-09-07 (the US Labor Day holiday), and if so what were the closing levels and 1-day percentage changes of the S&P 500, Nasdaq Composite, Dow Jones Industrial Average, and Russell 2000 for that session? If cash markets were closed on 2026-09-07, report the 2026-09-04 session as the last completed trading day and note any publicly reported 2026-09-07 index-futures or pre-market indications instead.
• Which US-listed stocks recorded the largest percentage gains during the US trading session of 2026-09-07 (or the last completed session if 2026-09-07 was a holiday), and what company-specific news published on 2026-09-07 — earnings, guidance, analyst upgrades, M&A, product/regulatory approvals — drove each top gainer? Focus on the day's top gainers with verifiable same-day catalysts and note any high-market-cap advancers that moved index points.
• Which US-listed stocks recorded the largest percentage declines during the US trading session of 2026-09-07 (or the last completed session if 2026-09-07 was a holiday), and what company-specific news published on 2026-09-07 — earnings misses, guidance cuts, analyst downgrades, regulatory or legal setbacks — caused each decline? Note any large-cap losers that dragged index levels.
• Which macro developments announced on 2026-09-07 — US economic data releases, Federal Reserve or Treasury official communications, Treasury yield and US dollar moves, oil and other commodity price changes, or geopolitical/policy headlines — did same-day market commentary cite as the drivers of US equity performance on 2026-09-07? If US cash equities were closed that day, summarize instead how index futures, bonds, and global markets (Europe/Asia) reacted to those 2026-09-07 macro events.
• Which S&P 500 sectors led and lagged in the US session of 2026-09-07 (or the last completed session if 2026-09-07 was a holiday), and what were that session's market internals: advancing vs declining issues on NYSE/Nasdaq, NYSE/Nasdaq volume versus recent averages, and the VIX close/change versus 2026-09-04?
• Which corporate events announced on 2026-09-07 — quarterly earnings reports, pre-announcements or guidance changes, M&A deals, or major analyst rating actions on S&P 500 components — were large or notable enough to move their stocks, sector, or the index that session, and what were the reported same-day stock reactions (approximate % move and source)?

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Trace Index

Tool-call traces are persisted under /srv/swarm_web_runs/run-1788755727833-0001/finance_output/traces.