Samsung (KR:005930): The technology company said it expects a record quarter thanks to rising AI chip demand. However, the update failed to impress investors used to blowout results from chipmakers, and its shares tumbled.

Space Exploration Technologies $(SPCX)$: Shares in Elon Musk's rocket and AI company ticked down in premarket trading ahead of its entry into the Nasdaq-100 today, which is expected to spark a flurry of trading.

Fiserv (FISV): Big banks have held talks about a potential deal to acquire a network owned by the financial technology company that could allow the lenders to bypass federal debit-card fee caps, WSJ reported. Fiserv shares rose 7% ahead of the bell.

Shell (UK: SHEL): The oil major's stock gained in London after saying it expects a bump in its gas-trading unit amid market volatility triggered by the Mideast war.

Rivian Automotive (RIVN): Shares in the EV maker slid nearly 8% premarket after it warned lower average selling prices for its cars would dent its second-quarter revenue.

Micron $(MU)$, ASML (ASML, NL:ASML), Bradcom $(AVGO)$, Marvell $(MRVL)$: The chipmakers' shares fell in premarket trading as stocks tied to the AI trade weakened.