I'm not a full-time trader, but I am a fairly active swing trader. I have Friday's off from my regular job (engineer) and try to monitor the markets looking for potential trade setups. Yesterday I had my Level II up watching Citigroup (C) along with some other stocks. I noticed that it was trading for about 2 1/2 hours back and forth between 3.48 and 3.49. I saw thousands of sellers at 3.49 and thousands of buyers at 3.48. My assumption is that if I wanted to buy 10K shares at 3.48 and immediately sell them at 3.49 for $100 profit (before commissions of $9.99 per trade) that my trade would probably not get executed immediately, right? So, I'm thinking that I may need to put in my bid at 3.481 and once filled put in my ask at 3.489 for an $80 profit. Does this sound feasible or am I naive about these inside prices getting filled faster (over 300K shares of C were traded on Friday)? Do any of you trade this stock this way? As always, thanks in advance for your comments.