AI Stocks Close
🔔 AI Stocks Close — Monday, September 21, 2026 at 2:15 PM
Closes: SPX 7,741.51 (+1.19%) · Nasdaq Comp 26,998.87 (+1.80%) · DJI 51,927.75 (+0.47%)
Day narrative: A full-throated risk-on Monday — crude extended its fourth straight losing session and Treasury yields backed off 5%, which let the AI complex run hard. Breadth was narrow though: processor names did the heavy lifting while the Dow tagged along.
Sectors: Best Technology (+2.4%) · Worst Energy (-1.89%)
Movers:
• ARM +17.16% — Meta's Muse agent reprices the CPU-per-inference thesis; CEO also sounded confident on the $2B AI chip target
• INTC +12.14% — Lip-Bu Tan said Intel can only meet about 50% of customer demand right now
• META +11.43% — Muse overtook ChatGPT as the top free iOS app, ~730K downloads in five days; Wells Fargo went $640 → $796 into Connect
• AMD +9.95% — crossed $1 trillion market cap, 14th U.S. company to do it, new 52-week high
• NET +8.72% — OpenAI vulnerability-management partnership and the "Adaptive Intelligence" launch
• MRNA +12.27% / NVO -7.96% — the day's biggest non-tech swings, healthcare cutting both ways
After-hours / Earnings:
• Quiet tape — only Stitch Fix, Cracker Barrel and MillerKnoll reported after the bell, nothing that moves the AI complex
• Watchlist AH drift is minimal: MU -0.05%, IBM -0.32%, AVGO -0.03%, NET -0.27%, TSM -0.18%, GOOGL +0.16%
Watchlist:
• MU $1,043.49 (+2.73% day, -0.05% AH)
• NVDA $227.38 (+2.30%)
• MSFT $501.61 (+1.59%)
• GOOGL $354.97 (+1.55%, +0.16% AH)
• META $741.25 (+11.43%)
• AMZN $258.43 (+1.86%)
• AAPL $338.98 (+0.85%, -0.10% AH)
• AMD $615.52 (+9.95%)
• TSLA $375.30 (+3.03%)
• PLTR $183.09 (+3.07%)
• ARM $322.90 (+17.16%)
• SMCI $41.20 (+5.40%, +0.02% AH)
• ORCL $148.62 (+0.68%, -0.05% AH)
• SOUN $6.17 (+4.05%)
• IONQ $40.48 (+3.45%, +0.35% AH)
• BBAI $2.90 (+3.57%, +0.34% AH)
• AVGO $362.66 (+1.60%, -0.03% AH)
• CRM $236.67 (-0.53%)
• ADBE $249.52 (+0.24%)
• IBM $231.92 (+1.03%, -0.32% AH)
• SNOW $339.02 (+1.98%)
• MDB $407.30 (+6.19%, -0.10% AH)
• NET $351.82 (+8.72%, -0.27% AH)
• CRWD $249.35 (+4.92%)
• TSM $444.93 (+2.36%, -0.18% AH)
• ASML $1,711.35 (+1.87%)
Macro:
• Brent ~$102 (-1.8%), WTI ~$94 (-2.2%) — fourth straight down session; Hormuz shipments hit a six-month high
• 10-year yield hovering at the 5.00% line, 2-year at a fresh cycle high above 4.74%; real yields at 20-year highs after last week's first Fed hike in three years
• Goolsbee spoke today; heavy Fed speaking calendar all week
• U.S. and Chinese officials began prep talks in New York — Bessent called them "very successful" ahead of Thursday's Trump-Xi summit
• AI IPO watch: Anthropic reportedly advancing a 2026 listing at up to $100B raised near a ~$2T valuation, with Nvidia in talks for a $10B cornerstone; Altman has said OpenAI isn't going public this year
Tomorrow: Light earnings docket — AutoZone, Cintas and Paychex land mid-week with Costco Thursday. The real catalysts are Meta's Connect on Wednesday and the Trump-Xi summit Thursday, so expect positioning ahead of both. More Fed speakers on deck; watch whether the 10-year holds under 5%.