Investors will know the full list of stocks Buffett bought and didn't buy later this month. Warren Buffett plans to step down as CEO of Berkshire Hathaway (BRK.A -3.04%) (BRK.B -2.85%) at the end of this year. However, that doesn't change the level of scrutiny his stock picks receive in the least. Many investors remain highly interested in knowing which stocks the "Oracle of Omaha" is buying. Before we get to that one stock, I'll readily admit there are lots of likely candidates that Buffett didn't buy last ...