GSK Pharma call volume above normal and directionally bullish

Bullish option flow detected in GSK Pharma with 4,550 calls trading, 2x expected, and implied vol increasing over 2 points to 21.24%. 5/5 weekly 37.5 calls and 5/5 weekly 37 calls are the most active options, with total volume in those strikes near 2,500 contracts. The Put/Call Ratio is 0.10. Earnings are expected on July 26th.