Healthcare Stocks Move in After-Market Session: FDMT, TOVX, IRTC, ATEC, BIO, ZYXI, LYEL, OBIO, YMAB, OPK, and MBRX Experience Changes

The article reports on 12 health care stocks that moved in the after-market session on Thursday. Gainers include 4D Molecular Therapeutics, Theriva Biologics, iRhythm Technologies, Alphatec Holdings, Bio-Rad Laboratories, and Cocrystal Pharma, while losers include Zynex, Lyell Immunopharma, Orchestra BioMed, Y-mAbs Therapeutics, OPKO Health, and Moleculin Biotech.

Health care stocks experienced a mixed performance in the after-market session on Thursday, with some companies reporting gains and others suffering losses. Among the gainers, 4D Molecular Therapeutics (FDMT) saw its shares increase by 33.1% to $5.99, with a market value of $204.2 million. Theriva Biologics (TOVX) also saw a significant rise, with its stock moving upwards by 17.68% to $0.53, giving the company a market cap of $3.8 million. iRhythm Technologies (IRTC) rose by 13.42% to $159.0, with a market value of $4.4 billion. Alphatec Holdings (ATEC) shares rose 13.32% to $11.99, with a market value of $1.5 billion. Bio-Rad Laboratories (BIO) saw its stock move upwards by 12.0% to $271.0, with a market value of $7.0 billion. Cocrystal Pharma (COCP) shares moved upwards by 8.67% to $1.88, with a market cap of $16.9 million.

Meanwhile, Zynex (ZYXI) shares fell 12.1% to $1.96, with a market value of $75.2 million. Lyell Immunopharma (LYEL) stock decreased by 10.85% to $10.6, with a market value of $231.1 million. Orchestra BioMed Holdings (OBIO) stock fell 10.14% to $2.75, with a market cap of $119.5 million. Y-mAbs Therapeutics (YMAB) stock decreased by 8.28% to $4.1, with a market cap of $216.9 million. OPKO Health (OPK) stock decreased by 7.82% to $1.18, with a market cap of $1.0 billion. Moleculin Biotech (MBRX) shares declined by 6.06% to $0.59, with a market value of $21.4 million.

These movements were influenced by various factors, including the release of Q2 earnings reports for several companies. The overall performance of health care stocks was also impacted by broader market trends, such as the drop in health care stocks after the White House released letters asking big pharmaceutical companies to cut prices and make other changes in the next 60 days [2].

References:
[1] https://www.benzinga.com/insights/movers/25/07/46776993/12-health-care-stocks-moving-in-thursdays-after-market-session
[2] https://www.bnnbloomberg.ca/markets/2025/07/31/stocks-are-mixed-on-wall-street-as-gains-by-microsoft-and-meta-temper-losses-elsewhere-in-the-market/