That's intersting. It looks like BRK/B trade at a 60bps discount to BRK/A. I think it's a voting rights issue. BRK/B only gets .0001 voting rights vs BRK/A. BRK/B is 1/1500 in price than BRK/A. So if you buy 1500 BRK/B you get .15 votes. There should be a discount and normally it would be bigger, but since Warren and Co own so much that the other A share votes don't really count the discount is small.
Not to say that what he does is easy. Most people fail at his style just like most people fail at scalping, technical analysis, options trading, etc.
What Buffet did is not easy, you have to hold on your personal believe for a long time (definitely not 14 months as some begineer here claim ) and withstand all the criticis from the people from"Elite" Trader. Technical Analysics will work, but not using the standard out of shelf package from your broker. Btw, most of TA is not any better than flipping a coin, take the simple S/R, you are having almost 50% people believe the market will reverse, another 50% believe the market will break through the S/R line, so the chance you are right is not any better than flipping a coin. Some so self claimed genius elite trader will argue to fade the trend or put their buy/sell order a few ticks beyond S/R, believe me, they still loss as the same principle apply. Money management is not an edge, it only make your cut smaller (and make your broker happy as you survice longer and pay longer and more consistent commission), but eventually you still die for a million cut.
Looks like BAC is about to take another dump. All of you who decided to jump in with Buffet can now wait, underwater, for that trade to be profitable...if that trade is ever profitable. Good luck!