Verra Mobility (VRRM) shares were down 54% in Wednesday premarket activity after the company cut its 2026 outlook following car rental firm Avis Budget's (CAR) decision to terminate a contract with the company, effective September.

Artelo Biosciences (ARTL) stock was down 30%, following the previous session's 43% rise.

Ainos (AIMD) shares were 27% lower after a 106% rally in the Tuesday session.

Zscaler (ZS) stock was down 25% following multiple analyst price target cuts, including those by RBC and Morgan Stanley.

Aditxt (ADTX) shares were down 22%, adding to losses of about 50% in the previous session.