Delta Air Lines call volume above normal and directionally bullish

Bullish option flow detected in Delta Air Lines (DAL) with 51,804 calls trading, 4x expected, and implied vol increasing almost 2 points to 54.97%. May-25 46 calls and May-25 50 calls are the most active options, with total volume in those strikes near 25,700 contracts. The Put/Call Ratio is 0.27. Earnings are expected on April 9th.