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:

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.
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.

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: 2026-09-27T17:21:04.833519259+00:00

Coverage window: 2026-09-27 – 2026-09-27

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 the closing level and 1-day percent change for the S&P 500, Nasdaq Composite, Dow Jones Industrial Average and Russell 2000 for the most recent completed US session on or before 2026-09-27, each with the source tool and timestamp
- the grader returned no verdict for this criterion
UNVERIFIABLE — The report states explicitly whether US equity markets were open on 2026-09-27 (Sunday) and names the next scheduled session date
- the grader returned no verdict for this criterion
UNVERIFIABLE — The report names at least 5 individual US tickers that were the session's largest percentage gainers and at least 5 largest losers, with each ticker's 1-day percent move pulled from the finance tools
- the grader returned no verdict for this criterion
UNVERIFIABLE — The report identifies at least 3 specific, dated catalysts (economic data releases, Fed speakers/statements, earnings, or single-name news) published or stamped 2026-09-25 through 2026-09-27 that the sources attribute to the session's moves
- the grader returned no verdict for this criterion
UNVERIFIABLE — The report includes actual quoted futures levels (S&P 500 / Nasdaq 100 / Dow futures) captured as of 2026-09-26 or 2026-09-27, or states plainly that futures quotes could not be retrieved
- the grader returned no verdict for this criterion
UNVERIFIABLE — Any ticker or dataset that failed to fetch is listed by name in an explicit 'not retrieved' note with the error or fallback URL used
- the grader returned no verdict for this criterion

Evidence: 178 claims · 81 sourced · 13 partial · 6 unsupported · 77 self-reported (no independent source) · 20 single-source

Executive Summary

There was no US stock market session on 2026-09-27 — it was a Sunday, and cash equities were closed. The last completed session was Friday, 2026-09-25, which closed higher across the majors, led by the Dow (+0.93%) and a record-high S&P 500 (+0.51% to 7,743.41). The advance was driven by oil sliding ~2% on US–Iran Strait of Hormuz de-escalation, single-name catalysts (Akamai–Anthropic, Costco earnings, an MGM/People Inc. bid report), and a modest retreat in Treasury yields from a 2007 high — against a hawkish Fed backdrop pricing ~64% odds of an October rate hike. Breadth beneath the surface was weak: the Russell 2000 gained just +0.07% and small caps fell ~0.8% on the week.

The next scheduled session is Monday, 2026-09-28 — inferred from the standard Mon–Fri schedule; the NYSE's published 2026 holiday list shows no closure between Labor Day (Mon 2026-09-07) and Thanksgiving (Thu 2026-11-26) (https://www.nyse.com/markets/hours-calendars).

Last Completed Session: Friday, 2026-09-25

Index	Close	1-day %	Point change	Week %
S&P 500	7,743.41	+0.51%	+39	+1.2%
Nasdaq Composite	27,068.72	+0.48%	+132.68	+2.1%
Dow Jones Industrial Average	51,828.62	+0.93%	+478.64	+0.3%
Nasdaq-100	30,608.13	+0.42%	—	+3.25%
Russell 2000	2,837.55	+0.07%	—	−0.80%
CBOE VIX	14.87	−5.11%	—	—

Sources: CNBC live blog, updated Fri Sep 25 2026 6:41 PM EDT (https://www.cnbc.com/2026/09/24/stock-market-today-live-updates.html); Investopedia "Markets News, Sept. 25, 2026," updated Sep 25 2026 04:47 PM EDT (https://www.investopedia.com/stock-market-today-dow-jones-s-and-p-500-09252026-12139934); index data cross-validated against finance_data analyze (last bar 2026-09-25 13:30 UTC) for SPX, NDX, DJI, RUT, and the ETF proxies SPY 771.35 (+0.54%), QQQ 744.50 (+0.46%), DIA 517.49 (+0.94%), IWM 281.97 (+0.11%).

Sector dispersion was narrow: 8 of 11 S&P sectors rose, led by Industrials (XLI +0.95%) and Info Technology (XLK +0.80%), with Communication Services (XLC −0.90%) and Energy (XLE −0.90%) the laggards. Information technology was the best sector of the week at +3.1%.

Biggest Movers — 2026-09-25

Gainers (1-day %, tool-sourced unless noted):

Ticker	Close	1d%	Driver
PPLI	n/f	+11%	WSJ reported MGM discussing a bid for it (holds 27% of MGM) — Investopedia, Sep 25 04:47 PM ET
MSFT	516.17	+3.66%	Closed at a 2026 high; "Autopilot" Copilot presentation led the Dow
AKAM	113.94	+3.20%	Anthropic committed ≥$11.6B over 7 years, +$9B expansion potential
COST	922.77	+2.93%	Quarterly results topped analyst estimates

Losers:

Ticker	Close	1d%	Driver
CHTR	112.91	−3.95%	No dated in-window catalyst found
INTC	123.00	−3.45%	No dated in-window catalyst found (still +33.6% over 20 sessions)
AXON	430.11	−3.35%	No dated in-window catalyst found
META	751.66	−3.34%	Profit-taking after +4.5% Thursday; +12.9% on the week on its "Muse" AI agent
MGM	32.58	−3.30%	Take-private proposal withdrawn; now bidding for People Inc.
CRM	234.02	−1.76%	Only Dow component down ≥1% intraday
TSLA	372.11	−1.54%	Semi truck commercial rollout "landed flat" for lack of delivery/profitability detail
NKE	35.75	−0.67%	BofA downgrade to underperform, price target cut to a Street-low $30 from $47

Micro/nano-cap volatility events (tool-sourced, thin-float, trend unclassified): MSGY +309.6% (CEO/co-chair change Sep 24), MGLD +92.0% (take-private agreement with Madison Dearborn), INLF +72.9% (H1 FY26 results), AIFF +68.9% (NeuroSigma ADHD partnership); IPEX −57.8%, WYY −50.6%.

Scope caveat: this is not a verified exchange-wide top-gainers/losers ranking. The available top-movers tool returned crypto tokens, no US-equity ranker was provided, and no ranked equity tape was retrievable. These are the largest moves among the names actually pulled.

What Drove the Session

Driver	Detail	Source
Oil slide on Hormuz de-escalation	Reuters reported the US and Iran discussed a deal to reopen the Strait of Hormuz; WTI −2.33% to $92.41, Brent −2.14% to $104.32	CNBC (Sep 25); Investopedia (Sep 25)
Treasury yields at multi-decade highs	10-yr 5.163%, highest since 2007; 30-yr 5.488%, highest since 2004; yields retreated ~4bp on the day after a 5.225% intraday peak	CNBC (Sep 25); Investopedia (Sep 25)
Hawkish Fed + hot PMI	Fed Gov. Michael Barr's hawkish comments, high energy prices from the Iran war, and a hot purchasing-managers' report; Fed funds futures imply ~64% odds of an October hike	CNBC (Sep 25)
Akamai–Anthropic	Multi-year deal; Anthropic to pay AKAM ≥$11.6B over seven years	Investopedia (Sep 25); CNBC (Sep 25)
Costco earnings beat	Quarterly results above expectations	Investopedia (Sep 25)
Nike downgrade	BofA to underperform, PT $47 → $30, Street low	Investopedia (Sep 25)
MGM / People Inc.	MGM discussing a bid for PPLI; PPLI +11%, MGM −3.5%	Investopedia (Sep 25)
US–China trade	Bessent: truce extended two months; USTR Greer said "a lot more details" due Monday	CNBC (Sep 25)
Consumer sentiment (final Sep)	48.1, up from the preliminary read but down from 51.7 in August; cited fuel prices and trade disputes	stockmarketwatch.com/digest/2026-09-25

Weekend items dated inside the 2026-09-27 window (finance_news/FinancialJuice headlines, no index move attributed): Iran's Revolutionary Guards navy captured a US autonomous underwater vehicle in the Strait of Hormuz (10:32Z); Trump told Axios he expects more Iran talks this week (14:58Z); China is considering permitting ByteDance and Alibaba to buy new Nvidia chips (15:06Z); Anthropic's Dario Amodei to attend a White House dinner (15:28Z). A fetched preview page (published 2026-09-27) describes weekend equity futures as "grinding higher" on geopolitical clarity but quotes no levels (https://tradingstrategyguides.com/stock-market-preview-september-27-2026-futures-pop-on-geopolitics/).

Summary Table

Ticker	Price	1d%	5d%	20d%	RSI	P/E	Trend
SPX (S&P 500)	7,743.41	+0.51	+1.21	+0.16	56.7	n/f	strong_uptrend
IXIC (Nasdaq Comp)	27,068.72	+0.48	+2.06	+1.99	61.1	n/f	strong_uptrend
DJI (Dow)	51,828.62	+0.93	+0.28	−3.25	43.6	n/f	downtrend
NDX (Nasdaq-100)	30,608.13	+0.42	+3.25	+3.26	64.7	n/f	strong_uptrend
RUT (Russell 2000)	2,837.55	+0.07	−0.80	−5.87	34.9	n/f	downtrend
SPY	771.35	+0.54	+1.27	+0.03	55.9	n/f	strong_uptrend
QQQ	744.50	+0.46	+3.20	+3.24	64.7	n/f	strong_uptrend
DIA	517.49	+0.94	+0.31	−3.31	43.1	n/f	downtrend
IWM	281.97	+0.11	−0.75	−5.95	34.9	n/f	downtrend
MSFT	516.17	+3.66	n/f	n/f	63.2	n/f	strong_uptrend
AKAM	113.94	+3.20	+9.01	+2.43	53.4	n/f	strong_uptrend
COST	922.77	+2.93	n/f	n/f	n/f	n/f	n/f
PPLI	n/f	+11	n/f	n/f	n/f	n/f	n/f
INTC	123.00	−3.45	+13.26	+33.57	66.9	n/f	strong_uptrend
CHTR	112.91	−3.95	−11.91	−23.87	29.8	n/f	strong_downtrend
META	751.66	−3.34	+12.90	+31.62	71.3	n/f	uptrend
MGM	32.58	−3.30	n/f	−24.2	14.3	n/f	n/f
AXON	430.11	−3.35	−3.94	−29.63	33.7	n/f	downtrend
CRM	234.02	−1.76	n/f	n/f	n/f	n/f	n/f
TSLA	372.11	−1.54	n/f	n/f	n/f	n/f	uptrend
NKE	35.75	−0.67	n/f	n/f	n/f	n/f	n/f

n/f = not fetched. P/E, forward P/E, PEG, market cap and analyst targets were not retrieved for any name — the fundamentals pull was not run. All price/return/RSI/trend fields are finance_data output with last_bar 2026-09-25 13:30:00 UTC, or exchange-published closes where the tool could not resolve the index symbol.

Analysis

Friday's headline gain overstates the market's internal health. The Dow's +0.93% was its best day of the week and snapped a three-week losing streak, but it came with the index sitting below both its VWMA-20 (52,360) and VWMA-67 (52,633) and carrying an RSI of 43.6 — a downtrend label. The Russell 2000 gained only +0.07% on the day and lost 0.80% on the week, with an RSI of 34.9 and a 20-day move of −5.87%. The 20-day picture splits cleanly: Nasdaq-100 +3.26% and Nasdaq Composite +1.99% versus Dow −3.25% and Russell 2000 −5.87%. This was a narrow, mega-cap-tech-led advance, not broad participation.

The session's causality runs through oil and rates, not earnings. The sources directly attribute the rally to the Hormuz de-escalation report pulling crude down ~2% and to yields easing from a 2007 high — while acknowledging the same rate backdrop (10-yr above 5%, 30-yr above 5.4%, ~64% priced odds of an October hike) is the constraint that kept small caps and rate-sensitive sectors (XLRE −0.22%, XLU weak on the week) from joining. The single-name catalysts — AKAM's $11.6B Anthropic contract, COST's beat, PPLI's +11% on the MGM bid report, NKE's Street-low target cut — are real but idiosyncratic; the meta-pattern is a market paying up for AI-infrastructure exposure (AKAM, MSFT, META's 12.9% week on Muse) while punishing everything rate-sensitive or crowded.

Risks & Open Questions

Cross-source conflicts on the same session. cot-trading.com shows the same closing levels but materially different point changes (Dow +317.03/+0.62% vs CNBC's +478.64/+0.93%), https://www.cot-trading.com/market-movers. Separately, tickerdaily.com published S&P 500 5,847.32, Nasdaq 18,642.18, a 10-yr yield of 3.72% and 87% odds of a Fed cut — all contradicted by both the finance tool and every mainstream source. No tickerdaily figure is used here; treat similarly confident-sounding low-tier market blogs with suspicion.
Breadth is snippet-only. The "328 of 503 S&P 500 names rose" figure comes from a search-result snippet for https://quant500.com/sp500-gainers-losers; the fetched page was truncated before the movers table, so it is not independently confirmed.
Futures: no levels retrieved. Every attempt to pull ES/NQ/YM/RUT futures returned no data on any exchange. The only weekend direction signal is qualitative, from a promotional trading-signal blog with no quoted prices. No futures level for 2026-09-26/27 is reported.
No ranked exchange-wide movers tape. The mover lists are the largest moves among the names actually pulled, not a certified top-N ranking.
No dated in-window source found for a 2026-09-27 session report, because no session occurred. Session figures are dated 2026-09-25 (their correct session date); weekend headlines are dated 2026-09-27.
Unverified macro claim circulating in-window: two 2026-09-27 Yahoo/Fool headlines assert "the Fed just raised interest rates" and 10-year yields back over 5%. This was not checked against a primary Fed record, and CNBC's Sep 25 figures instead show futures pricing a future October hike — treat the "hike already happened" framing as unverified.
Next week's catalysts (from the Sep 25 digest): Case-Shiller/JOLTS/CB Consumer Confidence (Sep 29), ADP and August PCE (Sep 30), ISM Manufacturing and September payrolls (Oct 1–2); earnings from CCL (Sep 28), MU and PAYX (Sep 29), JEF and FDS (Sep 30), ACN (Oct 1).

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.

Detailed Findings

Round 0 · Finding 1

US Equity Market Wrap — as-of Sunday, 2026-09-27

Critical calendar finding first: US equity markets were CLOSED on 2026-09-27. It is a Sunday. Every index level, percentage change and mover figure below is anchored to the most recent completed US session: Friday, 2026-09-25.

1. Executive Summary

2026-09-27 is a Sunday — there was no US equity trading session. Confirmed independently by the exchange calendar and by the data feed's own last bar.
The most recent completed session was Friday, 2026-09-25 (a full session, 9:30 a.m.–4:00 p.m. ET). The finance data feed's last daily bar for every equity/index symbol I pulled is stamped 2026-09-25 13:30:00 UTC (= 9:30 a.m. ET open of the 2026-09-25 session).
The week of Mon 2026-09-21 to Fri 2026-09-25 contained no US market holiday and no half-day. The nearest holiday was Labor Day, Monday, September 7, 2026 — the week before.
The next scheduled US trading session after Sunday 2026-09-27 is Monday, 2026-09-28 (no holiday falls on it).
Friday 2026-09-25 closed green across the majors, with a record-high S&P 500 and a rotation into mega-cap tech, against a surging 10-year Treasury yield (highest since 2007).
Futures quotes for 2026-09-26/2026-09-27 could NOT be retrieved — see "Not Retrieved" note.

2. Key Findings (with confidence)

#	Finding	Confidence
1	2026-09-27 was a Sunday; US markets closed	High (calendar + data feed)
2	Last completed session = Friday 2026-09-25, a full session	High
3	No holiday / half-day in the 2026-09-21→09-25 week	High (NYSE primary calendar)
4	Next session = Monday 2026-09-28	High
5	S&P 500 closed 7,743.41, +0.51%	High (tool + CNBC agree)
6	Dow closed 51,828.62, +0.93% (478.64 pts)	High (tool + CNBC agree)
7	Russell 2000 closed 2,837.55, +0.07%	Medium-High (tool only; sources describe small-caps lagging)
8	Nasdaq Composite closed 27,068.72, +0.48%	Medium (CNBC only — `^IXIC` un-fetchable in tools)
9	Driver: hawkish Fed Gov. Barr + hot PMI → 10-yr yield to 5.163%, highest since 2007	Medium-High (CNBC 2026-09-25)
10	Individual gainers/losers named below	Medium — these are the largest moves among the 20 tickers I pulled, NOT a verified full-market top-N ranking

3. Detailed Analysis

3.1 Market calendar verification (the anchor)

Primary record — NYSE "Holidays & Trading Hours" (fetched: https://www.nyse.com/markets/hours-calendars , redirecting to https://www.nyse.com/trade/hours-calendars). The page states: "All NYSE markets observe U.S. holidays as listed below for 2026, 2027, and 2028." The 2026 closure list is:

…(truncated — the summary above captures the substance)

Round 0 · Finding 2

US Equity Market Wrap — as of 2026-09-27

Executive Summary

US equity markets were CLOSED on 2026-09-27. That date is a Sunday. The most recent completed US cash session is Friday, 2026-09-25 (closing bell 4:00 p.m. ET). The next scheduled session is Monday, 2026-09-28. This is confirmed by an in-window (2026-09-27-dated) source I fetched, which states "Cash equity exchanges are closed on Sunday, but equity index and commodity futures open Sunday evening on Globex" and refers to cash sessions resuming "on Monday morning" (https://tradingstrategyguides.com/stock-market-preview-september-27-2026-futures-pop-on-geopolitics/, dated September 27, 2026).

The 2026-09-25 session was a modestly higher, relatively broad large-cap day led by industrials and technology, with energy and communication services as the drags and small caps lagging. The Dow led the majors; the Russell 2000 was essentially flat. The dominant macro driver was a surge in long-end Treasury yields (10-year at its highest since 2007, 30-year since 2004) plus a hawkish Fed comment and a hot PMI.

Coverage thinness disclosure: In-window (2026-09-27-dated) coverage of the 2026-09-25 session is thin. Only two 2026-09-27-dated pages were retrievable (cot-trading.com and tradingstrategyguides.com). The authoritative session figures below come from pages dated 2026-09-25 — which is correct, because 2026-09-25 is the session date — and I label every date explicitly. No 2026-09-27-dated numeric futures quotes were found.

1. Market calendar — resolved explicitly

Question	Answer	Evidence
Were US equity markets open 2026-09-27?	No — Sunday, cash markets closed	https://tradingstrategyguides.com/stock-market-preview-september-27-2026-futures-pop-on-geopolitics/ (dated Sep 27, 2026)
Last completed session	Friday, 2026-09-25	CNBC "Updated Fri, Sep 25 2026 6:41 PM EDT" (https://www.cnbc.com/2026/09/24/stock-market-today-live-updates.html); StockMarketWatch datePublished 2026-09-25T21:06:38Z (https://stockmarketwatch.com/digest/2026-09-25)
Next scheduled session	Monday, 2026-09-28	tradingstrategyguides.com (Sep 27, 2026)

Note: the CNBC URL slug says "09/24" but the page is the live blog updated Fri, Sep 25 2026 6:41 PM EDT and titled "Stock market news for Sept. 25, 2026." All figures below are the 2026-09-25 close.

2. Major index levels and 1-day moves — session of 2026-09-25

Source limitation (stated up front): finance_data could not retrieve index symbols. Calls for ^GSPC, ^IXIC, ^DJI, ^RUT all returned no data ... on any exchange (tried NASDAQ, NYSE, AMEX, OTC, BATS, CBOE, SP, DJ, CME and others). Index levels therefore come from news pages, not from the finance tool. This is listed in the "Not retrieved" section.

…(truncated — the summary above captures the substance)

Round 0 · Finding 3

US Equity Market Wrap — as of Sunday 2026-09-27

1. Calendar resolution (the trap)

US equity markets were CLOSED on 2026-09-27. It is a Sunday. The most recent completed session is Friday, 2026-09-25. The next scheduled session is Monday, 2026-09-28.

Evidence:

The finance_data daily-bar feed itself contains no bar for 2026-09-26 or 2026-09-27 on any US instrument. Every successful analyze call returned "last_bar": "2026-09-25 13:30:00" — SPX (CBOE), NDX (NASDAQ), SPY, QQQ, DIA, IWM all terminate at 2026-09-25 (finance_data action=analyze).
Fetched page dated 2026-09-27 states: "As of Sunday, September 27, 2026, trading desks are reassessing risk…" and its FAQ: "Cash equity exchanges are closed on Sunday, but equity index and commodity futures open Sunday evening on Globex." — https://tradingstrategyguides.com/stock-market-preview-september-27-2026-futures-pop-on-geopolitics/ (published September 27, 2026).
Calendar sources returned by search: "Daily Calendar for Sunday, September 27, 2026" — https://www.almanac.com/calendar/date/2026-09-27 ; "Calendar Sunday, 27 September 2026" — https://klendr.net/2026/september/27/ ; "Today's date is Sunday, September 27, 2026" — https://www.datetoday.info/?cal_month=9&cal_year=2026 (all search-result snippets, not fetched).
2026-09-25 is a Friday: AP headline "How major US stock indexes fared Friday 9/25/2026" (https://apnews.com/article/wall-street-stocks-dow-nasdaq-36d06c7a598e03539e0e09bdf6b7ede2 — snippet; page itself was bot-blocked, see failures) and https://portfolio-terminal.com/blog/stock-market-week-in-review-september-25-2026 ("Week of Monday, September 21 to Friday, September 25, 2026").

Caveat (per verification discipline): I did not reach a primary NYSE/Cboe/FINRA calendar record. The Sunday determination rests on (a) the absence of any 2026-09-26/27 bar in the data feed, (b) a fetched page published 2026-09-27 that explicitly calls it Sunday, and (c) calendar sites. I did not fetch an exchange holiday calendar, so treat the "next session = Monday 2026-09-28" line as inferred from the standard Mon–Fri schedule, not as read off a regulator page.

2. Index closes for the last completed session — Friday 2026-09-25

All figures below from finance_data action=quote, source=yahoo, retrieved 2026-09-27 (weekend), reflecting the 2026-09-25 close.

…(truncated — the summary above captures the substance)

Round 0 · Finding 4

US Equity Market Wrap — as-of Sunday 2026-09-27

Tooling note: All figures below were pulled live in this session via the finance_data and finance_news tools plus one browser fetch and two browser search-engine queries. The data tool does not return a wall-clock "as of" stamp, so for each series I give the last bar timestamp the tool returned, which is the authoritative as-of for the number.

1. Was the US market open on 2026-09-27?

No. 2026-09-27 was a Sunday and US equity cash markets were closed.

Evidence, from the tools themselves:

Every daily-bar series I pulled returned its last bar as 2026-09-25 13:30:00 (13:30 UTC = 09:30 ET), with no bars for 09-26 or 09-27 — i.e. the last completed session was Friday 2026-09-25. Source: finance_data action=analyze for SPX, IXIC, DJI, RUT, NDX (last_bar 2026-09-25 13:30:00).
The Investor's Business Daily piece I fetched is bylined "Sun, September 27, 2026 at 12:37 PM EDT" (JSON-LD datePublished: 2026-09-27T16:37:23Z), and its subject is pending futures — "Futures loom…" — not a completed session. Source: https://finance.yahoo.com/m/473106f6-6763-38d5-b898-3f7ff08d4b61/dow-jones-futures-due-amid.html
An unfetched search snippet from spfutures.org reads "As on Sunday, 27 Sep 2026 13:08 PM, US Time Last Trade on 25 Sep 20:00 PM, Market Close" (https://spfutures.org/) — background only, page not fetched.

Next scheduled cash session: Monday 2026-09-28. Caveat: I inferred this from the weekday calendar and the absence of any holiday indication in the sources I retrieved; I did not fetch an official NYSE/Nasdaq holiday-calendar page, so treat the specific date as inferred, not primary-verified.

Consequence: the only "live" prices during the weekend window are futures and overseas markets. I was unable to retrieve futures quotes from the finance tools (see §3) — this is stated plainly rather than filled from memory.

2. Major indices — most recent completed session: Friday 2026-09-25

Source: finance_data action=analyze (one batched call), last bar 2026-09-25 13:30:00. Index values are TradingView-sourced (exchange field shown), not the official exchange settlement print — flagged as such.

…(truncated — the summary above captures the substance)

Round 0 · Finding 5

US Equity Market Wrap — as-of date Sunday, 2026-09-27

1. Executive Summary

US equity markets were CLOSED on 2026-09-27. The calendar date 2026-09-27 is a Sunday (the immediately preceding trading day, Friday, 2026-09-25, is stamped "Fri, Sep 25 2026" throughout the CNBC session blog — https://www.cnbc.com/2026/09/24/stock-market-today-live-updates.html). Accordingly, all index levels, mover percentages and macro prints below are for the last completed US session: Friday, 2026-09-25. The next scheduled US session is Monday, 2026-09-28 (unverified against a primary NYSE/Nasdaq holiday calendar — see §6).

Friday's session was a broad risk-on close inside a volatile week: the Dow rose 0.93% (its best day of the week, snapping a three-week losing streak), the S&P 500 +0.51%, the Nasdaq Composite +0.48%, with technology the leading S&P sector. The drivers were a reignition of US–Iran/Strait of Hormuz deal hope (oil fell ~2%), falling oil and yields on the day, Akamai's $11.6B Anthropic contract, Costco's earnings beat, and a fresh MGM/People Inc. bid report — all set against a 10-year Treasury yield at its highest since 2007 and a ~64% priced odds of an October Fed rate hike.

2. Key Findings (with confidence)

#	Finding	Confidence
1	2026-09-27 is a Sunday; US markets closed; last completed session = Friday 2026-09-25	High
2	S&P 500 closed 7,743.41, +0.51% on 2026-09-25	High
3	Nasdaq Composite closed 27,068.72, +0.48% (+0.5% rounded)	High
4	Dow closed 51,828.62, +478.64 pts, +0.93%	High
5	Russell 2000 index level NOT RETRIEVED; IWM ETF proxy +0.11%	Low (proxy only)
6	10-yr Treasury yield ~5.16%, 30-yr ~5.49% (30-yr highest since 2004)	High
7	Fed funds futures priced ~64% odds of an October rate HIKE (CME FedWatch)	Medium-High (secondary)
8	Movers: 4 individual gainers + 5 losers confirmed; full screen not retrievable	Medium
9	Futures quotes retrieved, but without an as-of timestamp	Medium (timestamp gap)

3. Detailed Analysis

3.1 Market calendar — explicit resolution

…(truncated — the summary above captures the substance)

Round 0 · Finding 6

US Equity Market Wrap — as-of Sunday, 2026-09-27

1. Executive Summary

US equity markets were CLOSED on 2026-09-27, which was a Sunday. Cash equity exchanges do not trade on weekends; only equity-index and commodity futures trade in the Sunday-evening Globex session (tradingstrategyguides.com, 2026-09-27: "Cash equity exchanges are closed on Sunday, but equity index and commodity futures open Sunday evening on Globex"; investors.com, updated 2026-09-27 12:37 p.m. ET: "Dow Jones futures will open Sunday evening, along with S&P 500 futures and Nasdaq futures").

The most recent completed US session was Friday, 2026-09-25 (confirmed as "Friday, September 25, 2026" by multiple fetched pages, e.g. stockmarketwatch.com/digest/2026-09-25, dated 2026-09-25T21:06:38Z). The next scheduled session is Monday, 2026-09-28.

On 2026-09-25 the major indices closed higher (Dow +0.93%, S&P 500 +0.51%, Nasdaq Composite +0.48%, Russell 2000 +0.07%), with leadership concentrated in mega-cap tech and AI-infrastructure names and weakness in rate-sensitive/energy sectors. Drivers were a pullback in oil on US–Iran truce talk, a retreat in Treasury yields from an intraday peak, a "constructive Trump–Xi summit," and a slight upward revision to the September University of Michigan consumer-sentiment reading (stockmarketwatch.com digest, 2026-09-25).

2. Market Calendar Resolution (mission-critical)

Question	Answer	Source
Was the US market open on 2026-09-27?	No — 2026-09-27 was a Sunday. Cash equities closed all weekend.	tradingstrategyguides.com/stock-market-preview-september-27-2026-futures-pop-on-geopolitics/ (dated September 27, 2026); investors.com/…/dow-jones-futures-trump-iran-comments-micron-spacex-tesla-economic-data/ (updated 09/27/2026)
Last completed session	Friday, 2026-09-25	stockmarketwatch.com/digest/2026-09-25 (datePublished 2026-09-25T21:06:38Z)
Next scheduled session	Monday, 2026-09-28	stockmarketwatch.com/digest/2026-09-25 (lists CCL earnings "Sep 28 (before open)"; "Stock market outlook for Monday, September 28, 2026" — strongbuyanalytics.com/stock-market-outlook, search result)

All index and mover figures below are 2026-09-25 closing values, not "today's."

3. Major Index Levels & 1-Day Change — 2026-09-25 close

…(truncated — the summary above captures the substance)

Investigation Trail

Round 0

What were the closing levels and 1-day percent changes for the S&P 500, Nasdaq Composite, Dow Jones Industrial Average, Russell 2000 and CBOE VIX on the most recent completed US trading session on or before 2026-09-27 (i.e. 2026-09-25), and was the US market open on 2026-09-27? Pull the actual index data with finance_data (action=analyze and/or action=get_market_data) using index tickers ^GSPC, ^IXIC, ^DJI, ^RUT, ^VIX, and cross-check the session date and market-open status via finance_news headlines timestamped 2026-09-25 through 2026-09-27.
Which individual US-listed tickers were the largest percentage gainers and largest losers on the 2026-09-25 US session, and what specific news or filing (earnings, guidance, M&A, FDA, analyst action, SEC Form 4 insider transaction) was attributed to each move? Pull the moves with finance_data (action=get_top_movers and/or action=analyze for the named tickers) and match catalysts via finance_news and finance_insider for 2026-09-25 through 2026-09-27.
What economic data, Federal Reserve communications, Treasury yield moves or macro events published or timestamped between 2026-09-25 and 2026-09-27 were identified by sources as the drivers of the US equity session, and what did they show (actual vs consensus where stated)? Include any 10-year Treasury yield, dollar, oil and gold levels cited for that window, pulled from finance_news and finance_data.
Which S&P 500 sectors were the strongest and weakest and what was market breadth (advancers vs decliners, new highs/lows) on the US session of 2026-09-25? Use finance_data sector/ETF quotes (e.g. XLK, XLF, XLE, XLV, XLY, XLP, XLI, XLB, XLU, XLRE, XLC) plus finance_news commentary dated 2026-09-25 to 2026-09-27 to establish rotation and whether the move was broad or narrow.
What market-relevant news broke during the weekend of 2026-09-26 to 2026-09-27 (geopolitics, trade policy, Fed leaks, mega-cap company announcements, M&A) and what were S&P 500, Nasdaq 100 and Dow futures quoted at as of 2026-09-26 or 2026-09-27? Search finance_news and the live web for headlines and futures/global market levels published in that exact two-day window, and state the quote timestamp for each futures figure.
What was the exact US equity market calendar around 2026-09-27: was Friday 2026-09-25 a full session, was there any half-day or holiday closure in the week of 2026-09-21 to 2026-09-25, and what is the next scheduled US trading session after 2026-09-27? Verify against the exchange holiday calendar (NYSE/Nasdaq) via web search and confirm the last session's official close date in finance tool output.

Sources

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Trace Index

Tool-call traces are persisted under /srv/swarm_web_runs/run-1790528900798-0011/finance_output/traces.