After-Hours Stock Movers:

Robinhood (NASDAQ: HOOD) gained 5.8% after reporting strong first quarter revenue and a solid increase in monthly active users.

Arm Holdings (NASDAQ: ARM) fell 7% despite beating fourth quarter EPS estimates, as full year guidance was viewed as lackluster.

Instacart (NASDAQ: CART) fell 3% despite beating estimates for revenue and profitability in the first quarter and naming a new CFO.

CytomX Therapeutics (NASDAQ: CTMX) surged 100% after reporting positive initial Phase 1a dose escalation data for monotherapy CX-904 (EGFRxCD3 T-cell engager) in solid tumor.

AppLovin (NASDAQ: APP) rose 8% after EPS in the first quarter surprised to the upside and it issued solid guidance for second quarter profitability.

Bumble (NASDAQ: BMBL) rose 6% after forecasting strong full year revenue growth. It sees total revenue year over year growth in the range of 8% to 11%.

Airbnb (NASDAQ: ABNB) fell 7% after it issued guidance for second quarter revenue that missed consensus at the midpoint.