TORONTO-DOMINION BANK $81 (www.td.com) owns 45% of TD Ameritrade Holding Corp. (Nasdaq symbol AMTD), a leading U.S. online broker. Ameritrade will contribute $51 million to TD’s earnings in its 2012 fourth quarter, which ends October 31, 2012. That’s down 5.6% from $54 million a year earlier. (TD earned $1.8 billion, or $1.91 a share, in the third quarter of 2012.) In its latest quarter, Ameritrade’s average daily trading volumes fell 21.0%. However, its average commission per trade rose 5.2%. Best Buy.