# Biggest Gainers Today
These stocks posted the largest percentage increases, often driven by company-specific news, sector momentum (e.g., energy, tech, or speculative small-caps), high short interest squeezes, or positive developments like contracts/deals.
* **Planet Labs PBC (PL)**: +25.48% to \~$33.83 High volume (over 63 million shares). Likely boosted by satellite imagery/tech sector interest or positive earnings/analyst updates in earth observation.
* **Polestar Automotive Holding (PSNYW)**: +20.14% EV-related warrant or class of shares; possibly tied to automotive/EV sentiment shifts.
* **York Space Systems (YSS)**: +19.17% Space/defense sector play, potentially from contract wins or industry news.
# Biggest Losers Today
These saw the sharpest declines, often linked to earnings misses, sector corrections (e.g., AI/hardware oversupply concerns), or profit-taking after recent runs.
* **Super Micro Computer (SMCI)**: -33.32% to \~$20.53 Extremely high volume (over 240 million shares). This appears to be the standout loser—likely due to ongoing concerns in AI server demand, competition, margin pressures, or negative analyst revisions following a period of hype in AI infrastructure stocks.
* **StoneX Group (SNEX)**: -32.78% Financial services; possibly earnings-related or sector rotation.
* **Applied Optoelectronics (AAOI)**: -14.11% Optics/tech components; could tie into broader tech/hardware weakness.
* **Vicor Corporation (VICR)**: -13.46% Power electronics; similar sector pressures.