GoHealth (GOCO) shares were down 43% in Monday premarket trading after the company and some of its subsidiaries voluntarily filed Chapter 11 petitions to implement restructuring transactions.

Real Messenger (RMSG) stock was down 30%, following the previous session's 66% gain.

Ohmyhome (OMH) shares were down 23%, extending the prior session's 5% decline.

Inotiv (NOTV) stock was down 21% after a 91% gain in the previous session.

Nuwellis (NUWE) shares were down 12%, continuing from Friday's 61% decline.