AI Stocks Close
🔔 AI Stocks Close — Wednesday, August 19, 2026 at 2:15 PM
Closes: SPX 7,715.60 (+0.22%) · NDX 29,464.40 (-0.10%) · DJI 53,482.50 (+0.23%)
Day narrative: The three-day losing streak snapped, but not because tech showed up — Treasury said it'd at least double buybacks of long-dated debt, the 30-year yield fell 9bp to 5.19%, and a monster biotech print did the rest of the lifting. Under the surface it was a rotation day: healthcare and software up, AI hardware down again.
Sectors: Best Health Care (+2.2%) · Worst Technology (-1.7%)
Movers:
• MRNA +176% — Phase 3 melanoma vaccine with Merck hit; single-handedly reshaped the health care tape
• MRK +11% — partner on the same vaccine data
• AVGO -4.6% — Marvell landed a custom AI-chip deal with Google worth up to $12.2B, and the Street immediately read it as share risk
• CRM +5.1% — JPMorgan resumed at Overweight, $250, calling the AI-disruption fear overblown
• CRWD -5.3% — gave back a chunk ahead of its Aug 26 print
• TSLA +4.2% — Cybercab robotaxi launch in Austin this month, plus Einride's 500-unit Semi order
After-hours / Earnings:
• Quiet tape — no watchlist name posted material numbers. Movement across the board is inside a quarter percent, with the biggest AH gainers all sub-$5 microcaps.
Watchlist:
• MU $937.11 (-0.39%)
• NVDA $217.56 (-0.99%, +0.05% AH)
• MSFT $484.31 (+0.56%)
• GOOGL $344.72 (+0.15%)
• META $546.03 (+0.43%)
• AMZN $265.84 (+2.46%)
• AAPL $316.83 (+2.19%)
• AMD $466.42 (-3.71%)
• TSLA $351.12 (+4.23%)
• PLTR $175.19 (+2.13%)
• ARM $249.34 (-1.57%)
• SMCI $36.58 (-2.22%)
• ORCL $143.77 (+0.69%)
• SOUN $7.16 (+2.43%)
• IONQ $43.36 (-1.72%)
• BBAI $3.17 (+1.60%)
• AVGO $362.48 (-4.61%)
• CRM $206.09 (+5.07%)
• ADBE $272.47 (+3.55%)
• IBM $237.16 (+1.93%)
• SNOW $325.33 (0.00%)
• MDB $440.53 (+1.36%)
• NET $291.88 (-3.15%)
• CRWD $201.63 (-5.30%)
• TSM $412.09 (-0.32%)
• ASML $1,751.73 (-2.84%)
Macro:
• Treasury expanding buybacks in the 10-to-30-year sector "by at least double" — the day's real catalyst
• 10-year 4.65% (-5bp), 30-year 5.19% (-9bp), backing off multi-year highs
• AI IPO watch: reporting today says Anthropic investors are penciling in an October listing at a $2T valuation, with enterprise revenue overtaking consumer ahead of plan. OpenAI is eyeing Q4, though CFO Sarah Friar has publicly said they're not ready. Neither trades yet.
Tomorrow: Weekly initial jobless claims at 8:30 ET (prior 209K) — the labor read that's been quietly steering rate expectations. Otherwise a thin calendar, with the tail of retail earnings. The real marker on the wall is NVDA on August 26 after the close, same day as CRM and CRWD.