Well this morning started out as a bit of a bummer! See -- Charles Schwab to buy TD Ameritrade in a $26 billion all-stock deal. The $55 billion market cap Schwab is gobbling up the $22 billion TD Ameritrade at a slight premium. Matt Levine of Bloomberg has a great, cynical take on the question: Schwab lowering its trading commissions to zero is actually what wiped out $4 billion off TD's marketcap a few months ago. For Schwab, the revenue loss from trading was 7% of total, while for TD it was over 20%. Once Schwab dropped prices, TD started trading at a discount and became an acquisition target. You can see the share price drops reflected below in the beginning of October.