Three hours into trading, Citigroup Inc. (NYSE : C ) is trading down 1.1%, after opening down 0.8%. The imminent release of the Federal Reserve's Open Market Committee meeting minutes are keeping the markets mixed in general, and the big banks depressed in particular. Where the drama never ends At 2 p.m. today, the Fed will release the minutes of its June 19 FOMC meeting. Even though chairman Ben Bernanke gave an official statement that day, with an official guidance statement concurrently released, until later today, no one will have had the full-blown minutes of the meeting to pore over. And investors and the media love nothing more than to dive in and see what they can parse out of any of the behind-the-scenes maneuverings that may have gone on. If life is like a box of chocolates, so are FOMC meeting minutes: You never know what you're going to get, even three weeks past the sell-by date. Hence, it makes the markets nervous when this box of chocolates gets opened. The return of boring banks?