08:54 AM EDT, 10/10/2024 (MT Newswires) -- Health care stocks were mixed pre-bell Thursday as the Health Care Select Sector SPDR Fund (XLV) was up 0.1% and iShares Biotechnology ETF (IBB) was down 0.1% recently.

Gritstone bio (GRTS) shares slumped by over 57% after the company said it filed for Chapter 11 bankruptcy protection from creditors while restructuring.