Bullish option flow detected in ImmunoGen with 2,589 calls trading, 1.3x expected, and implied vol increasing over 2 points to 62.64%. Jan-24 16 calls and Oct-23 16 calls are the most active options, with total volume in those strikes near 2,300 contracts. The Put/Call Ratio is 0.11. Earnings are expected on November 3rd.
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