The BioWorld Drug Developers Index (BDDI) rebounded in the second quarter, ending the first half (H1) of 2025 up 1.23% after being down 7.36% at the end of March and 5.52% at April’s close. The BDDI continued to track just below the Dow Jones Industrial Average, which gained 3.64% in H1, and outperformed the Nasdaq Biotechnology Index, which ended June down 1.92%.