Bought DRYS June 6 calls at today's closing. Bid/ask was 0.60/0.65. I bought at 0.65. but the closing price was 0.63. How can people buy at 0.63? I thought it had to be 0.05 incremental. Can anyone explain this to me? Also bought BAC, that's much better. It has penny incremental. TIA, FREEWILLY