Bullish option flow detected in ON Semiconductor with 6,464 calls trading, 1.5x expected, and implied vol increasing over 1 point to 35.26%. 5/24 weekly 75 calls and Jun-25 70 calls are the most active options, with total volume in those strikes near 1,600 contracts. The Put/Call Ratio is 0.34. Earnings are expected on July 29th.