Twin Disc (TWIN) shares surged 2% pre-bell Monday following a 1.1% gain on Friday.
Enanta Pharmaceuticals (ENTA) shares increased nearly 7% after a 2% drop in the previous session.
Azek Company (AZEK) shares were up 20% on a planned $8.75 billion takeover by James Hardie Industries (JHX).
U Power (UCAR) shares advanced 11% after the company unveiled a joint venture with SUSCO to offer battery-swapping technology in Thailand.