Health care stocks were flat to higher pre-bell Thursday, with the iShares Biotechnology ETF (IBB) inactive and The Health Care Select Sector SPDR Fund (XLV) up 0.3%.

Astrazeneca (AZN) shares were up over 4% after the company reported higher Q4 earnings and revenue.

Bristol-Myers Squibb (BMY) stock was down more than 3% after the company reported a decline in Q4 non-GAAP earnings and the company issued 2025 outlook below analysts' expectations.

Eli Lilly (LLY) shares were more than 1% lower even after the company reported higher Q4 non-GAAP earnings and revenue.