Duke Energy (DUK) is seeing a second day of call buying this week. July 15 calls were active Monday. Today, the focus is on the April 12.5 calls after an investor bought two blocks of 9,500 (19K total) for an average of 52.5 cents. 37.8K contracts traded total. It likely creates new positions and seems to reflect a very bullish view on the utility company, which is down 37 cents to $12.05.