AI Stocks Close
🔔 AI Stocks Close — Monday, September 28, 2026 at 2:15 PM
Closes: SPX 7,686 (-0.75%) · NDX 30,276.81 (-1.08%) · DJI 51,481 (-0.67%)
Day narrative: Geopolitics wrote the script — Trump waved off an Iran truce proposal, crude spiked toward $110 Brent, and the 10-year yield tore up to 5.26%, its highest since 2007. Stocks sagged all morning, clawed back some of it midday on sanctions-relief chatter, then faded again into the bell with tech taking the worst of it.
Sectors: Best Energy (+1.11%) · Worst Basic Materials (-1.80%), with consumer cyclicals and communication services close behind
Movers:
• MDB -18.46% — CEO CJ Desai bolted for Meta after less than a year; Dev Ittycheria back as interim, guidance reaffirmed, stock wrecked anyway
• ARM -8.70% — SoftBank's margin loan against its Arm stake stepped up to $25B, CFO share sales disclosed, valuation questions piling on
• NVDA +1.68% — board approved another $150B of buyback, lifting total authorization to $235B, the largest ever by a U.S. company
• TSLA -3.96% — high-multiple growth names bore the brunt of the yield surge
• AMD -3.61% — swept up in the AI-safety chatter that hit the chip complex
• CRWD +2.82% / NET +1.53% — cyber and edge names caught a defensive bid while the rest of software sold off
After-hours / Earnings:
Quiet tape. No notable AH earnings — AMD ticked up 0.27%, IBM +0.14%, SOUN +0.17%, everything else within a whisker of the close. MU sat at $1,052.00 (-0.19% AH) ahead of Wednesday's fiscal Q4 print.
Watchlist:
• MU $1,053.98 (-2.61% day, -0.19% AH)
• NVDA $228.86 (+1.68%)
• MSFT $509.22 (-1.35%)
• GOOGL $342.75 (-0.34%)
• META $715.62 (-4.79%)
• AMZN $246.27 (-1.36%)
• AAPL $338.45 (-0.77%)
• AMD $607.88 (-3.61% day, +0.27% AH)
• TSLA $357.37 (-3.96%)
• PLTR $187.48 (-1.15%)
• ARM $283.33 (-8.70%)
• SMCI $41.78 (-3.42%)
• ORCL $132.64 (-3.25%)
• SOUN $5.83 (-3.64% day, +0.17% AH)
• IONQ $44.55 (-2.04% day, +0.16% AH)
• BBAI $2.67 (-4.82%)
• AVGO $349.57 (-0.92%)
• CRM $227.37 (-2.84% day, -0.36% AH)
• ADBE $231.12 (-1.85%)
• IBM $220.67 (-2.15% day, +0.14% AH)
• SNOW $328.12 (-2.33%)
• MDB $334.68 (-18.46%)
• NET $354.36 (+1.53%)
• CRWD $259.24 (+2.82%)
• TSM $453.10 (+0.55%)
• ASML $1,771.41 (+1.58%)
Macro:
• 10-year Treasury 5.24-5.26%, +6 to +8bp, highest since 2007; 30-year at 5.56%, highest since 2004
• Brent pushed back toward $110 on Strait of Hormuz risk, then eased after reports Trump is open to nuclear sanctions relief
• Gold got hammered, -3.83% to roughly $4,123
• Dallas Fed manufacturing was the only real data point today; the heavy stuff starts tomorrow
• AI/IPO watch: Anthropic has confidentially filed a draft S-1 and is pointed at a Nasdaq listing as soon as October, reportedly up to $2T. OpenAI's rumored round would value it near $1.2T, but Altman has ruled out a 2026 float — 2027 looks likelier. Neither is tradable yet.
Tomorrow: Conference Board Consumer Confidence at 10am ET (90.0 expected vs 89.4), JOLTS job openings for August alongside it, plus Case-Shiller and FHFA home prices at 9am and Dallas Fed services at 10:30. Earnings are thin — Carnival and CarMax before the bell, AAR and Concentrix after. The one to watch on the watchlist: MongoDB's Investor Day at Nasdaq MarketSite, 11am to 3:15pm ET, now a very different event than it was on Friday.