08:10 AM EST, 12/23/2024 (MT Newswires) -- iLearningEngines (AILE) shares tumbled 36% in recent Monday premarket activity after saying it voluntarily initiated Chapter 11 bankruptcy proceedings in the US on Friday.

Mistras Group ( MG ) shares fell 21%, erasing the previous session's slight gain.

Lexicon Pharmaceuticals ( LXRX ) stock was down 12% after saying Friday it received an expected US Food and Drug Administration's complete response letter to "discontinue launch preparations for Zynquista and focus solely on its clinical development pipeline."

Applied Therapeutics ( APLT ) stock fell 4.3% after William Blair downgraded it to market perform from outperform.