Guggenheim analyst Louise Chen broke down the latest short interest data (6/30/2016) for the Specialty Pharmaceutical sector and other key Pharma/Biotech players.

The analyst notes stocks with the largest increase in short interest is AcelRx Pharmaceuticals (NASDAQ: ACRX) at +30.9%, followed by Horizon Pharma (NASDAQ: HZNP) at +30.5%.

The company with the largest decrease in short interest is Antares Pharma (NASDAQ: ATRS) at -57.5%, followed by Jazz Pharmaceuticals (NASDAQ: JAZZ) at -35.8%.

Other Notables:

• Valeant Pharmaceuticals (NYSE: VRX) short interest fell 7.2%
• Perrigo (NYSE: PRGO) short interest fell 32.8%
• Shire (NYSE: SHPG) short interest fell 28.7%
• Allergan (NYSE: AGN) short interest fell 19.7%
• Gilead (NASDAQ: GILD) short interest fell 10.1%
• Mallinckrodt (NYSE: MNK) short interest fell 8.1%
• Endo Pharmaceuticals (NYSE: ENDP) short interest fell 5.4%
• Zoetis (NYSE: ZTS) short interest rose 23.5%
• Amgen (NASDAQ: AMGN) short interest rose 8.4%