Altimmune call volume above normal and directionally bullish

Bullish option flow detected in Altimmune (ALT) with 3,346 calls trading, 1.9x expected, and implied vol increasing almost 3 points to 105.75%. 1/24 weekly 9 calls and Jan-25 10 calls are the most active options, with total volume in those strikes near 1,700 contracts. The Put/Call Ratio is 0.06. Earnings are expected on March 12th.