$Unitedhealth(UNH.US) bought the stock a week ago, and the reason was simple: it kept hitting historical lows, had a PE of 10, is an industry giant, and is in the healthcare sector... there's no reason for it to keep falling. I bought in two tranches, and today, a week later, it officially surged because of Buffett's entry! The call options were purely bullish, with only one-month calls to 300, and I didn't expect it to break 300 today—earlier and faster than expected! My takeaway from stock buying is that you need to have your own understanding and stock-picking ability, and secondly, block out the noise and hold on. Capital isn't the issue; if you have less capital, you can dabble in options...