hey folks, i recently started day trading using options. i'm with optionshouse. here is the mystery: today, i bought $27 strike price, Jun expiry, put options on ORCL for $.73 (bid was $.72 / ask was $.73) at 06:55am PST. At the time, ORCL stock price was $26.70. Fast forward to closing time, where ORCL closed @ $26.70, but--here's the mystery part--the bid was $.69 / ask $.71! What gives?! Why is the bid $0.03 less, when the stock price is the same? I've experienced the same with other stocks as well. ORCL is a very liquid stock, so I don't think it has to do with liquidity. Much appreciated for an answer that even I can understand Thank you!