Monday's Top After-Hours Movers

Gainers

Cassava Sciences Inc SAVA jumped 15.07% after-hours on Monday after disclosure of director Robertson Sanford buying 36,261 shares at $8.92 per share.

GameStop Corp. GME recovered 9.4% in after-hours session as activist investor hedge fund RC Ventures, holding 9.9% stake, was reported to be in communication with management and board members for e-commerce expansion. The stock had fallen 7.5% on Monday in a broader retail selloff.

Fulgent Genetics Inc FLGT climbed 9.1% after-hours on replacing Garrett Motion GTX in the S&P SmallCap 600 index.

ProPetro Holding Corp PUMP recovered 8.04% in the after-hours session after declining 10.66% in Monday's energy stocks selloff.

Anavex Life Sciences Corp AVXL climbed 7.57% in the after-hours session after declining 3.76% in Monday's session.

Qutoutiao Inc QTT jumped 7.4% after-hours on better-than-expected second-quarter earnings.

Alector Inc ALEC recovered 6.08% in the after-hours session after falling 11.2% in Monday's session.

Losers

Zumiez Inc. ZUMZ fell 7.2% after-hours after declining 4.97% in Monday's session on pin action of the retail selloff.