Drug developer stocks strengthened further through September and October, with the BioWorld Drug Developers Index (BDDI) rising from a 7.69% gain at the end of August, to 24.91% through the third quarter and 28.96% at October’s close. The BDDI outperformed both the Nasdaq Biotechnology Index and the Dow Jones Industrial Average, which finished October up 24.49% and 11.8%, respectively.