StablecoinX Jumps 85% as Crypto & Blockchain Leads Today's Stock Gainers · Aug 21, 2026

Which US stocks moved most on August 21, 2026, the themes that drove them, and the news behind each move.

1. Market at a glance

- S&P 500 (SPY) 765.62 ▼ −1.4% - Nasdaq 100 (QQQ) 713.44 ▼ −2.4% - Russell 2000 (IWM) 299.93 ▼ −1.7% - Dow (DIA) 532.21 ▼ −0.9%

2. Biggest movers, grouped by what drove them

⚛️ Quantum Computing — IonQ, Rigetti, and D-Wave surged on growing quantum collaborations and deal activity, with IonQ benefiting from new space contracts and latest quantum partnerships. - RGTI +11.5% — Rigetti Computing, Inc. - QBTS +8.5% — D-Wave Quantum Inc. - IONQ +8.0% — IonQ, Inc. ₿ Crypto & Blockchain — Circle, Bitmine, and stablecoin stocks rallied sharply as Bitcoin surged past $71,000, triggering a major short squeeze and regulatory momentum. - USDE +85.3% — StablecoinX Inc. - BMNR +5.8% — Bitmine Immersion Technologies, Inc. - CRCL +5.1% — Circle Internet Group 🧬 AI Healthcare — Tempus AI jumped after Moderna's cancer vaccine breakthrough validated its $1.5 billion biotech bet, alongside FDA reimbursement wins. - TEM +9.1% — Tempus AI, Inc. - TGTX +7.3% — TG Therapeutics, Inc. - HIMS +6.1% — Hims & Hers Health, Inc. 💳 Fintech — SoFi climbed as fintech names rebounded on bond market strength and a Wall Street analyst highlighted 20% upside potential. - SOFI +5.5% — SoFi Technologies, Inc. - IBKR +4.5% — Interactive Brokers Group, Inc. - SYF +3.6% — Synchrony Financial ⛏️ Materials & Mining — Copper and rare earth miners surged amid supply-demand crunch and insider activity; FCX, MP, and USAR all posted strong gains. - USAR +12.6% — USA Rare Earth, Inc. - MP +9.1% — MP Materials Corp. - FCX +7.7% — Freeport-McMoRan Inc. - MOS +4.6% — The Mosaic Company - TECK +4.6% — Teck Resources Limited - KGC +4.2% — Kinross Gold Corporation - BHP +3.6% — BHP Group Limited 🛰️ Space Technology — AST SpaceMobile gained as Trump targets over 1,000 U.S. space launches annually and ASTS chases prized satellite spectrum. - ASTS +5.5% — AST SpaceMobile, Inc. 🚗 Consumer & EVs — No news attached — a flow move, not a catalyst. - RIVN +6.0% — Rivian Automotive, Inc. - BJ +5.5% — BJ's Wholesale Club Holdings, Inc. - CMG +4.5% — Chipotle Mexican Grill, Inc. - F +3.0% — Ford Motor Company 📈 Low-Priced Small Caps — No news attached — a flow move, not a catalyst. - JUNS +19.9% — Jupiter Neurosciences, Inc. - BTDR +9.0% — Bitdeer Technologies Group - PURR +5.0% — Hyperliquid Strategies Inc. - ONDS +3.9% — Ondas Inc. - SMR +3.5% — NuScale Power Corporation

3. What drove the upside

- How IonQ Could Benefit From Its Latest Quantum Collaborations - MSTR, BMNR, COIN, CRCL Stock Extend Rally After Bitcoin Blasts Past $71K, Triggering $3B Liquidation Wave - Moderna’s Cancer Breakthrough Just Made Tempus AI’s $1.5 Billion Bet Look Brilliant - SoFi Climbs 6%, Upstart Jumps 8%, Affirm Rises 7% as Fintech Names Rebound With Bond Market Catalyst

4. What weighed on it

- CIFR −8.4% — Cipher Digital Inc. - HUT −8.8% — Hut 8 Corp. - One group moved with no news attached — flow, not a catalyst.

5. How this was built

Warrants and leveraged ETFs were removed before grouping — they crowd out the underlying names they track. 50 tickers survived that filter. Every number here comes from market data. The theme names and the one-line explanations are written from the day's headlines — where a group moved with no headline behind it, we say so rather than inventing a reason. This is an observation of what moved, not advice and not a recommendation. This tells you where attention went today; it does not tell you what happens next.