Cassava Sciences call volume above normal and directionally bullish

Bullish option flow detected in Cassava Sciences with 7,417 calls trading, 6x expected, and implied vol increasing almost 5 points to 156.10%. 7/26 weekly 15 calls and 7/26 weekly 13 calls are the most active options, with total volume in those strikes near 1,900 contracts. The Put/Call Ratio is 0.28. Earnings are expected on August 1st.