BigBear.ai surged in retail chatter after Rep. Lisa McClain disclosed buying $15K-$50K worth of shares on August 7. Traders speculated the move hinted at potential federal contract wins, given BigBear's reliance on US defence work. Message volume on Stocktwits spiked 500%, with sentiment turning 'extremely bullish.' Shares closed at $5.09, up 14% year-to-date.