Shared finance report

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

September 22, 2026

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:
  1. 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: 2026-09-22T04:53:19.844338787+00:00

Coverage window: 2026-09-22 – 2026-09-22

Rounds: 1

Status: PARTIAL

Objective check — 0 of 5 criteria met

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

Evidence: 217 claims · 53 sourced · 14 partial · 8 unsupported · 141 self-reported (no independent source) · 27 single-source

Executive Summary

There is no 2026-09-22 US stock-market performance to report: as of every data pull, the 2026-09-22 session had not yet opened. The live clock read 00:45–00:56 ET on Tuesday 2026-09-22 (browser eval: "Tue Sep 22 2026 00:49:13 GMT-0400"; https://timeapi.io/api/Time/current/zone?timeZone=America/New_York2026-09-22T00:50:42), roughly eight hours before the 09:30 ET cash open. Yahoo's chart API headers confirm the same instant — date: Tue, 22 Sep 2026 04:44:33 GMT, with currentTradingPeriod.regular.start = 1790083800 = 2026-09-22 13:30 UTC (https://query1.finance.yahoo.com/v8/finance/chart/%5EGSPC?range=5d&interval=1d). Investopedia's 2026-09-22 recap URL returned HTTP 402 with no article body, while its 2026-09-21 URL returned a full article.

The only real tape is the last completed session, Monday 2026-09-21 — a strongly risk-on, tech-led day: Nasdaq Composite +2.26% to 27,122.09 (a record close), S&P 500 +1.49% to 7,764.69, Dow +0.71% to 52,054.19, Russell 2000 +0.52% to 2,875.36, VIX 14.87. Drivers were an AI/semiconductor melt-up (AMD crossed $1 trillion market cap) and Meta +11% on its "Muse" AI agent hitting #1 in Apple's App Store. All 2026-09-22 index levels, movers and sector rankings are flagged UNAVAILABLE below — not estimated.

What exists in-window for 2026-09-22 (pre-market only)

SeriesLastChangeSession rangeVolumeSource
E-Mini S&P 500, Dec 26 (ES=F)7,835.00+0.019% (+1.50)7,829.00–7,840.0045,025Yahoo chart API, pulled 2026-09-22 04:44:54Z
E-Mini Nasdaq-100, Dec 26 (NQ=F)30,835.25+0.164% (+50.50)30,778.50–30,916.5047,671Yahoo chart API, pulled 2026-09-22 04:44:54Z
SquawkNews futures read (as of 04:15:27Z)S&P −0.01%, Nasdaq +0.29%, Dow −0.16%squawknews.com/brief/livecast/2026-09-22
BTCUSD (24/7, bar 2026-09-22 00:00)85,450.00−1.32% (5d +11.92%)finance_data analyze
ETHUSD (24/7, bar 2026-09-22 00:00)2,726.69−1.76% (5d +11.50%)finance_data analyze

Net pre-market read: a modest, oscillating Nasdaq-relative bid against a flat-to-slightly-negative S&P/Dow — from a single AI-generated feed, so treat the direction as unconfirmed (squawknews).

2026-09-22 in-window news (all timestamped 03:21Z–04:30Z, i.e. Asia/Europe hours, none tied to a US session move): RBA Gov. Bullock on Middle East inflation risks (link); RBNZ Gov. Breman on higher oil pushing near-term inflation above the September outlook (link); Dutch September consumer confidence −33 vs −34 (link); Alibaba's Zhenwu V300 AI chip and >20 GW cloud buildout (chip, datacentres); South Korea's 5–10% Westinghouse stake bid (link).

Only one US release was scheduled for 2026-09-22: Richmond Fed Manufacturing Index, September — forecast 5, prior 4, 10:00 ET (tradingcharts calendar). No CPI, PPI, jobs or housing print was on that day's calendar.

The last completed session — Monday 2026-09-21

TickerPrice1d%5d%20d%RSIP/ETrend
SPX (S&P 500)7,764.69+1.493+1.899+1.17759.28not fetchedstrong_uptrend
IXIC (Nasdaq Comp)27,122.09+2.261+3.573+3.59764.33not fetchedstrong_uptrend
DJI (Dow)52,054.19+0.708−0.710−2.30543.32not fetcheddowntrend
RUT (Russell 2000)2,875.36+0.523−0.584−4.72238.56not fetcheddowntrend
VIX14.87+0.405−13.041−1.71845.55not fetchedstrong_downtrend
SPY773.50+1.550+1.659+1.01658.43not fetchedstrong_uptrend
QQQ741.47+2.775+4.553+3.92965.67not fetchedstrong_uptrend
DIA519.78+0.756−0.898−2.33742.79not fetcheddowntrend
IWM285.58+0.521−0.809−4.79437.92not fetcheddowntrend

Yahoo's bar data for 2026-09-21 independently gives ^GSPC 7,764.70 (+114.20 pts, 52-wk range 6,316.91–7,816.70), ^IXIC 27,122.09 (+599.55, 52-wk high 27,190.21), ^DJI 52,048.83 (+366.19) and ^RUT 2,875.36 (+14.96).

Sector leadership — 2026-09-21 (finance_data analyze, all 11 SPDRs):

ETFSectorPrice1d%5d%20d%RSITrend
XLCCommunication Svcs114.75+3.556−0.28+3.0157.58uptrend
XLKTechnology194.85+2.769n/fn/fn/fn/f
XLYCons. Discretionary112.23+1.081n/fn/fn/fn/f
XLVHealth Care169.01+0.368+0.75−3.21n/fn/f
XLREReal Estate42.59+0.141−1.23−5.5232.19downtrend
XLIIndustrials169.98+0.135n/fn/fn/fn/f
XLFFinancials55.90+0.072−1.98−2.75n/fn/f
XLBMaterials49.71−0.560−1.55−7.1533.74downtrend
XLPCons. Staples81.92−1.063n/fn/fn/fn/f
XLUUtilities40.66−1.071−2.77−4.9328.49strong_downtrend
XLEEnergy62.46−2.877−3.21−1.85n/fn/f

Biggest movers — 2026-09-21 (finance_data analyze):

TickerPrice1d%5d%20d%RSITrend
ARM322.90+17.16+35.10+32.7169.49strong_uptrend
FSLY27.42+14.92+10.30+9.9062.86strong_uptrend
MRNA172.94+12.27+17.90+19.1669.56strong_uptrend
INTC121.78+12.14+25.30+35.2170.92strong_uptrend
AMD615.52+9.95+24.75+30.0672.96strong_uptrend
QCOM194.23+9.29+7.82+20.8365.44uptrend
NET351.67+8.67+6.45+19.9765.41strong_uptrend
RKLB69.89+8.24+11.74−3.6953.96uptrend
GLW158.98+5.90+10.71+6.1053.38strong_uptrend
SMCI41.20+5.40+12.14+10.6359.62strong_uptrend
CRWD249.35+4.92+5.94+29.9064.64strong_uptrend
MU1,043.96+2.77+12.98+7.9861.24strong_uptrend

Confirmed decliners, 2026-09-21: only HPQ ≈ −5% and PSKY −3% carry explicit figures (Investopedia, "Updated September 21, 2026 04:17 PM EDT"). Chevron, Marathon Petroleum and Valero are named as decliners there without a disclosed percentage, so no numbers are reported for them. An earlier tool pass returned no single-name negative 1d% records at all.

What drove the 2026-09-21 session

  1. AI/semiconductor melt-up — SOXX closed near +5%; AMD +10% to an all-time high, crossing $1 trillion market cap (~$614/share, ~+175% YTD); INTC +12%; ARM +17%; Micron ~+3%; Roundhill Memory ETF ~+3.5%; Samsung +5% in Seoul.
  2. Meta's "Muse" AI agentMETA +11% after the agent became the #1 app in Apple's App Store; Magnificent Seven ETF (MAGS) +3.5%.
  3. Paramount Skydance / Warner Bros. DiscoveryWBD +11% after PSKY settled a 12-state-AG lawsuit that had blocked its $81 billion merger; PSKY closed −3%.
  4. HP Inc.HPQ down ~5%, among the worst S&P 500 decliners, after again giving no fiscal-2027 outlook in a filing.
  5. Oil and rates retreat — WTI −4.8% to $95.50, Brent −3.7% to $100; 10-year yield ~4.96%, down 4 bps. Tool data corroborates: USO 148.16 (−3.68%), TNX 4.962 (−0.70%), GLD 398.38 (−0.70%).
  6. Crypto proxies — HOOD, COIN, MSTR and CRCL surged as bitcoin traded near $86,500, up from overnight lows around $80,600.
  7. Policy backdrop — Treasury Secretary Bessent said the US and China discussed a "US-China AI Dialogue"; President Trump was due to meet Xi Jinping in Washington later that week.

All seven items are dated 2026-09-21 and are background for a 2026-09-22 question (Investopedia).

Analysis

The single decision-relevant fact is a timestamp, not a price: at 00:45–00:56 ET the US cash session had not opened, and every daily bar from finance_data terminated at 2026-09-21 13:30:00 UTC for every symbol queried — indices, sector ETFs, single names, rates, FX and commodities alike. Four independent mechanisms agree (browser clock, timeapi.io, Yahoo response headers/currentTradingPeriod, Investopedia's 402 on the 09-22 URL), so this is not a partial-feed artifact. Anyone reporting "today's close" for 2026-09-22 is either reporting 2026-09-21 or fabricating.

The 2026-09-21 tape itself was narrow and top-heavy, which matters for what today's session is being set up against. Nasdaq +2.26% and S&P +1.49% against Dow +0.71% and Russell 2000 +0.52%, with Communication Services +3.56% and Tech +2.77% leading while Energy −2.88% and Utilities −1.07% fell, is a mega-cap/AI-driven advance — not broad participation. The ETF trend flags reinforce the split: SPY, QQQ and XLC in uptrends, while DIA and IWM sit in downtrends with RSI 42.8 and 37.9 respectively, and four of the eleven sectors carry sub-35 RSI readings (XLU 28.49, XLRE 32.19, XLB 33.74). Small caps and Dow components are still below their 50-day averages (RUT 2,875.36 vs SMA-50 2,967.20) even after Monday's rally.

The pre-market setup for 2026-09-22 — Nasdaq futures modestly bid, S&P flat, Dow slightly lower — is consistent with a continuation of that same narrow leadership, but the moves (+0.16% on NQ=F, +0.02% on ES=F) are within noise, come from a single AI-generated source, and had not been confirmed by a second in-window publisher. The only scheduled US catalyst on the 2026-09-22 calendar was the Richmond Fed manufacturing index at 10:00 ET, forecast 5 vs 4 prior — a second-tier print that would not on its own explain a large index move.

Risks & Open Questions

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 Session Recap — 2026-09-22 (Tuesday)

⚠️ HEADLINE FINDING: The 2026-09-22 session could not be retrieved. This report contains no 2026-09-22 market data.

Confidence: HIGH (0.95) that this is a data-availability failure and not an absence of a session.

Every successfully-returned series from finance_data terminated at the 2026-09-21 bar. The provider's own metadata says so explicitly. For example, the XLF quote returned:

"symbol": "XLF", "exchange": "AMEX", "price": 55.9, "change_pct_1": 0.072,
"last_bar": "2026-09-21 13:30:00", "first_bar": "2025-09-23 13:30:00", "bars": 250

last_bar = 2026-09-21 for every symbol that returned at all. There is no 2026-09-22 bar in the feed. Accordingly, per the mission's non-negotiable constraint ("any data point that could not be fetched must be explicitly flagged as unavailable rather than filled in with an estimate"), I am not reporting index levels, movers, sector rankings, or catalysts for 2026-09-22. The prior-session numbers I did retrieve are reproduced below, labelled as 2026-09-21, and must not be read as today's figures.


1. Executive Summary


2. Key Findings

…(truncated — the summary above captures the substance)

Round 0 · Finding 2

US Market Session Recap — Requested Window 2026-09-22

⚠️ HEADLINE FINDING: The 2026-09-22 US cash session has not yet occurred

Before any number is quoted, the single most important fact: as of the latest data available to these tools, the 2026-09-22 US equity session had not opened. The 2026-09-22 closing levels, 1-day changes, and intraday ranges requested in the task do not exist yet and are therefore reported as UNAVAILABLE. I did not substitute 2026-09-21 numbers for them, and I did not interpolate.

Primary-record evidence for the clock (all from Yahoo Finance's own chart API response headers/bodies, fetched via http_request):

So the latest completed session is Monday 2026-09-21. Everything quantitative below is that session, explicitly labelled. Where the mission asked for 2026-09-22 values, the entry reads UNAVAILABLE — session not yet open at data pull (2026-09-22 04:44 UTC).


1. Executive Summary


2. Key Findings

…(truncated — the summary above captures the substance)

Round 0 · Finding 3

US Market Recap — Data Pull Executed 2026-09-22 ~00:45 ET

⚠️ CRITICAL, LOAD-BEARING FINDING: THE 2026-09-22 US SESSION HAD NOT YET TRADED WHEN THE DATA WAS PULLED

The browser clock returned "now":"Tue Sep 22 2026 00:45:23 GMT-0400 (Eastern Daylight Time)" / "et":"9/22/2026, 12:45:23 AM" (browser eval verb, 2026-09-22 04:45 UTC). The 2026-09-22 NYSE/Nasdaq session opens 09:30 ET, i.e. ~8h45m after the pull.

Three independent tool results corroborate that 09-22 has not happened yet:

  1. Every finance_data action=analyze daily pull returned "last_bar": "2026-09-21 13:30:00" — no 09-22 bar exists (SPY, QQQ, DIA, IWM, SPX, NDX, DJI, RUT, AAPL, NVDA, MSFT, META, MU, SMCI, COIN, STX, WDC, HOOD, TSLA, XLB, XLC, XLU).
  2. The 15-minute series ends "last_bar": "2026-09-21 19:45:00" UTC = 15:45 ET 09-21.
  3. strongbuyanalytics.com/stock-market-outlook (fetched) is stamped "Updated September 21, 2026 at 04:23 PM ET" and its datePublished is 2026-09-22T00:00:00+00:00 — it is a pre-session outlook for Sep 22, not a recap.

Consequence: per the mission's own constraint ("no data from earlier sessions may be presented as today's numbers" and "any ticker, index, or data point that could not be fetched must be explicitly flagged as unavailable"), I cannot produce a 2026-09-22 session recap. Every index level, % change, mover, and internals reading below is the 2026-09-21 completed session and is labelled as such. 09-22 session data is UNAVAILABLE — session not yet held at time of pull.


1. Executive Summary


2. Key Findings (with confidence)

…(truncated — the summary above captures the substance)

Round 0 · Finding 4

US Market Recap Request — 2026-09-22: BLOCKING FINDING, THEN LATEST AVAILABLE DATA

1. Executive Summary

The 2026-09-22 US cash trading session had not begun when this research was executed, so no 2026-09-22 session recap exists to be written. This is not a sourcing gap — it is a timing fact I verified from primary response headers.

Consequence for the mission: the success criteria requiring the closing level and 1-day % change for the S&P 500, Dow, Nasdaq Composite and Russell 2000 on 2026-09-22, plus that day's 5 biggest gainers and 5 biggest losers, cannot be met — those numbers do not yet exist. I therefore report (a) the 2026-09-22 pre-market state that is in-window, and (b) the last completed session, Monday 2026-09-21, clearly labelled as the latest available rather than as today's numbers. I did not substitute 2026-09-21 figures for 2026-09-22 claims anywhere below.


2. Key Findings (with confidence levels)

…(truncated — the summary above captures the substance)

Round 0 · Finding 5

US Equity Market Recap — Requested Session 2026-09-22

1. Executive Summary

The 2026-09-22 US regular trading session had not occurred at the time of this research, and no 2026-09-22 closing data exists in any tool I queried. I verified the wall-clock time directly: a live time API returned "dateTime":"2026-09-22T00:50:42" in America/New_York — i.e. 00:50 AM ET on Tuesday 2026-09-22, more than eight hours before the 9:30 AM ET cash open (source: https://timeapi.io/api/Time/current/zone?timeZone=America/New_York, fetched 2026-09-22T04:50:42Z). The pre-market session itself does not even begin until 4:00 AM ET, per the FAQ on the page I fetched at https://premarketprice.com/premarket-movers ("pre-market session (4:00 AM – 9:30 AM ET)").

Corroborating tool evidence that the last completed session is Monday 2026-09-21:

EvidenceValueTool
Last daily bar, all indices2026-09-21 13:30:00 UTCfinance_data analyze (interval=1d)
Last hourly bar, SPY/QQQ2026-09-21 19:30:00 UTCfinance_data analyze (interval=1h)
Newest news item2026-09-22T04:30:04Z (pre-open, Asia/Pacific)finance_news
Third-party outlook page"Updated September 21, 2026 at 04:23 PM ET"https://strongbuyanalytics.com/stock-market-outlook (fetched)

Consequently, every success-criterion item that requires 2026-09-22 values is flagged UNAVAILABLE below. I am not substituting 2026-09-21 numbers for today's; the 2026-09-21 data appears only in a clearly-labeled "latest completed session" block, because that is the only real tape that exists.


2. Key Findings (with confidence)

Finding 1 — 2026-09-22 close data does not exist yet. Confidence: HIGH. Live time = 2026-09-22 00:50 ET (https://timeapi.io/api/Time/current/zone?timeZone=America/New_York). Finance feeds terminate at the 2026-09-21 bar. The most recent news timestamp is 04:30 UTC 2026-09-22 = 00:30 ET, i.e. pre-open. Index levels, biggest gainers/losers, dollar volume, and sector leadership for 2026-09-22: UNAVAILABLE.

Finding 2 — Latest completed session (2026-09-21) was strongly tech-led. Confidence: HIGH (tool-derived). Nasdaq Composite +2.261% to 27,122.09 (record-high area; 52-wk range position 99.0%); S&P 500 +1.492% to 7,764.69; Dow +0.708% to 52,054.19; Russell 2000 +0.523% to 2,875.36. VIX 14.87 (+0.405%). Source: finance_data analyze (interval=1d), pulled 2026-09-22T04:50Z.

Finding 3 — Sector dispersion on 2026-09-21 was extreme: Communication Services and Tech led; Energy lagged badly. Confidence: HIGH (tool-derived). XLC +3.556% and XLK +2.769% led; XLE −2.877% was the clear laggard. Source: finance_data analyze (interval=1d) on the 11 SPDR sector ETFs.

…(truncated — the summary above captures the substance)

Round 0 · Finding 6

US Market Report — Data Pulled 2026-09-22 ~04:49–04:56 UTC (00:49–00:56 ET)

⚠️ HEADLINE FINDING: THE 2026-09-22 US SESSION HAS NOT OCCURRED YET

This is the single most important finding, and it constrains everything below.

At the moment of data collection, the browser sidecar clock read "Tue Sep 22 2026 00:49:13 GMT-0400 (Eastern Daylight Time)" → ISO 2026-09-22T04:49:13Z (source: browser verb eval, tab default). The US regular session opens at 9:30 AM ET; the 2026-09-22 cash session is therefore ~8h 40m away and has not opened, let alone closed.

This is corroborated by every market-data call I made:

Consequence, stated plainly: there are no 2026-09-22 closing index levels, no 2026-09-22 biggest gainers/losers, and no 2026-09-22 sector leadership that can be pulled from any tool. Per the mission's non-negotiable constraints, I have not substituted 2026-09-21 data as today's numbers. The 2026-09-21 session is presented below explicitly labeled as the most recent completed session, for context only.

UNSATISFIABLE SUCCESS CRITERIA (flagged, not fabricated):


1. Index performance

1a. 2026-09-22 — NOT AVAILABLE

No index or index-ETF bar for 2026-09-22 exists in the tool. Additionally, the index symbols themselves are not resolvable by the tool: ^GSPC, ^DJI, ^IXIC, ^RUT all returned "no data for ... on any exchange" (tried NASDAQ, NYSE, AMEX, OTC, BATS, CBOE, LSE, TSX, TVC, SP, DJ, FOREXCOM, CME, CBOT, COMEX, NYMEX, CME_MINI, ICEUS). So actual index point levels are unavailable, and I use ETF proxies below (a proxy is not the index level — flagged).

1b. Most recent completed session — 2026-09-21 (LABELED: NOT TODAY)

From finance_data action=analyze (1d), pulled 2026-09-22 ~04:50 UTC:

…(truncated — the summary above captures the substance)

Investigation Trail

Round 0

Sources

Trace Index

Tool-call traces are persisted under /srv/swarm_web_runs/run-1790052113431-0005/finance_output/traces.

This report was researched and written by a Swarmio run — a swarm of AI agents that searches the web, reads the sources, and shows its working.

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