Option Block 99: Selling MSFT Premium Trading Block: A rare fairly uneventful day. Chipotle Mexican Grill with earnings after the bell - Is CMG the other Apple? Microsoft after the close - a whopping non-event. Odd Block: Unusual activity in: Microsoft (MSFT) Basically printing money today. Options on the software giant are the most actively traded by volume on any single stock ahead of the company’s much-anticipated first-quarter earnings report. The near month October at-the-money contracts, which expire after the close tomorrow, are seeing the most activity with the 27 strike Puts leading in volume. BP PLC – (BP) Earlier in the session, Total SA, Europe’s third-largest oil company, popped up on our ‘hot by options volume’ market scanner after a block of 8,500 calls changed hands at the May 2012 55 strike against open interest of 385 contracts. Roughly 30 minutes before the call activity in Total appeared on our scanners, it looks like the same investor purchased 8,500 call options on BP at the April 44 strike for a premium of $2.45 apiece. Xpress Block: News on the OX app for iPhone and soon to be released app for iPad. When might listeners of the Options Insider be able to stream and download this show through the OX app? Around the Block: Amazon next Tuesday - A counter-pole to Apple right now, given their rival content ecosystem. General Nutrition Corporation with earnings tomorrow, GNC has been making some interesting volume spikes recently. Ford earnings next Wednesday - how to prep for this.