Mixed Close for ETF Proxies as Nasdaq-100 Gauge Diverges
In the September 18, 2026 session, the ETF proxies tracked in this brief closed mixed: the Nasdaq-100 proxy (QQQ) rose 0.63% while the S&P 500 (SPY), Dow (DIA) and Russell 2000 (IWM) proxies all finished lower. The moves were small outside of the large-cap tech proxy, and the packet contains no session-specific market commentary explaining the divergence. Note that this brief's data feed was flagged as degraded, and figures below reflect exchange-traded fund proxies, not the underlying indices.
Key takeaways
- QQQ closed at 721.45, up 0.63%; SPY closed at 761.69, down 0.12% (Sept. 18 session).
- DIA fell 0.48% to 515.88 and IWM fell 0.47% to 284.10, leaving breadth-oriented proxies behind large-cap tech.
- Dollar volume was concentrated in SPY (about $49.8B) and QQQ (about $34.9B), consistent with typical trading patterns.
- Movers lists were dominated by micro-cap and leveraged/inverse products; among more liquid names, XENE fell 30.7%. The packet provides no confirmed reason for these moves.
- Data quality caveat: the feed was marked degraded and 206 tickers were excluded for lacking a prior-session close.
Some inputs were unavailable for this brief.
- Polygon: 206 tickers without a prior-session close were excluded.
Markets
| Ticker and name | Change | Price |
|---|---|---|
| SPYS&P 500 ETF proxy | −0.12% | $761.69 |
| QQQNasdaq-100 ETF proxy | +0.63% | $721.45 |
| DIADow Jones ETF proxy | −0.48% | $515.88 |
| IWMRussell 2000 ETF proxy | −0.47% | $284.10 |
Indices shown via ETF proxies.
Weekly recap points to rate path and AI debate as market themes
CNBC reported on September 19 that investors spent the prior week weighing the prospect of a new Fed rate-hiking cycle alongside debate over slowing advanced AI development. The report describes the week as a whole and should not be read as an explanation of any single session's price action.
Buffett hands Berkshire chairmanship to Howard Buffett
CNBC reported that Warren Buffett has stepped down as chairman of Berkshire Hathaway, with his son Howard taking the role, described as the next step in a long-planned succession framework. The packet does not include Berkshire share price data for the session.
Goldman economist links weak sentiment to broader pessimism
CNBC reported that Goldman Sachs economist Joseph Briggs attributed soft consumer sentiment partly to declining self-reported happiness, even as economic data holds up. This is an economist's interpretation, not an official statistic.
Student-loan borrowers leaving SAVE face payment deadline
CNBC reported that millions of borrowers exiting the SAVE plan could see sharply higher monthly payments unless they move to another repayment option soon. The report does not quantify any aggregate effect on consumer spending.
Top movers
US session of 2026-09-18. Close-to-close change. Prices in USD.
Gainers
| Ticker and name | Change | Price |
|---|---|---|
| IMCCIMCC | +143.10% | $4.23 |
| WALDWWALDW | +102.86% | $0.01 |
| QNMEQNME | +92.25% | $0.56 |
| REFRREFR | +68.49% | $0.65 |
| GIPRGIPR | +63.44% | $0.72 |
| MRNOMRNO | +56.75% | $0.34 |
| TJGCTJGC | +52.95% | $16.84 |
| ZTGZTG | +50.83% | $1.81 |
| TNMGTNMG | +43.87% | $3.87 |
| AMBRAMBR | +34.01% | $1.97 |
Losers
| Ticker and name | Change | Price |
|---|---|---|
| DCXDCX | −69.89% | $0.13 |
| MKDWMKDW | −64.12% | $2.63 |
| PAAIPAAI | −55.09% | $1.50 |
| SDSTSDST | −50.32% | $0.13 |
| FRGTFRGT | −35.48% | $0.63 |
| DAICDAIC | −33.02% | $3.55 |
| MSTZMSTZ | −32.66% | $2.82 |
| SMSTSMST | −32.55% | $13.84 |
| XENEXENE | −30.69% | $39.75 |
| WHLRWHLR | −29.06% | $0.27 |
Sources
- France’s wine production nears a 70-year low, leaving winemakers with tough choices · CNBC
- ‘My total balance should be $20 million’: I invested $1.1 million in a crypto platform. Have I lost it all? · MarketWatch
- 80-year-old discount fashion chain closing 120 stores · Yahoo Finance
- It’s almost impossible to sell a condo unit these days: ‘I feel trapped’ · MarketWatch
- 90% of retirees are making this miscalculation with their savings · MarketWatch
- Many young investors can’t afford to invest without their parents’ help · MarketWatch
- MS NOW, CNN and Politico journalists blocked from White House after Trump ban · CNBC
- The future of retirement? Work until you die. · MarketWatch
- These are the 10 biggest retirement fears — and what you can do about them · MarketWatch
- Higher interest rates and AI safety fears put the stock market to the test last week · CNBC
- She pays $96 a month to live in Yellowstone National Park: 'Being here has changed my life' · CNBC
- Student loan borrowers exiting SAVE may face sharply higher payments if they don't take action soon · CNBC
- Dave Ramsey Told 1 Caller, ‘Hold on to the Cash. We’re Not Gonna Pay Off the House,’ But 5 Months Later Told Another to Pay It Off That Night. Here’s Why. · Yahoo Finance
- Consumer sentiment is in the dumps despite a solid economy. Goldman Sachs blames 'lower happiness' · CNBC
- Aflac’s (AFL) Net Earnings Jumped 37.7%, Yet Adjusted Earnings Actually Fell · Yahoo Finance
- Buffett takes next step in plan to keep Berkshire from straying · CNBC
- Cencora (COR) Raised Guidance and Bought Back $1B. What’s the Catch? · Yahoo Finance
- Coherent (COHR) Squeezes Key Optical Network Gear Into a Plug-In Module · Yahoo Finance
- Gallagher’s (AJG) Colorado Deal Is Another Brick in a Very Big Wall · Yahoo Finance
- Stock Market Week Ahead: Keeping An Eye Out For Change · Yahoo Finance
- Mitt Romney warned a billionaire tax triggers demand for 2 assets — now California decides. Get in before the super-rich · Yahoo Finance
- Meta Stock Could Hit $800 This Year -- And It All Begins on Sept. 23 · Yahoo Finance
- ‘You’re gonna get there’: Dave Ramsey tells divorced mom, 51, with no savings she can retire a millionaire. Here’s how · Yahoo Finance
- Bill Ackman's Pershing Square IPO Breaks Out · Yahoo Finance
- Robinhood Soars, SpaceX Orbits Entry: Five Stocks Near Buy Points · Yahoo Finance
- A Pause on Advanced AI Is Wishful Thinking, But Adobe Stock Is a Buy Anyway · Yahoo Finance
- Mark Cuban spent $125,000 on a lifetime American Airlines pass after a drunk dial — here's why the math worked · Yahoo Finance
- YardFlow lands over 200-site yard automation deal · Yahoo Finance
- Trump says U.S. to build a 'large Military presence' in Greenland as part of a security deal with it and Denmark · CNBC
AIK MARKET UPDATE is for information only and is not financial advice. It is generated automatically and may contain errors.