ImmunoGen call volume above normal and directionally bullish

Bullish option flow detected in ImmunoGen with 1,693 calls trading, 1.9x expected, and implied vol increasing almost 5 points to 82.83%. Jan-24 15 calls and Apr-24 15 calls are the most active options, with total volume in those strikes near 1,300 contracts. The Put/Call Ratio is 0.03. Earnings are expected on February 29th.