The Charles Schwab Corp. (SCHW), the well-known brokerage firm, benefited from rising equity markets and increased interest rates. Rising equity markets resulted in higher assets under management, on which Schwab earns fees. Higher interest rates benefited the company in several ways, including less need for Schwab to waive management fees on clients' money market funds. These increased sources of revenues carry especially high incremental profit margins. In addition, client trading activity increased, as retail investors continued to re-engage with the stock market.
From the Baron Funds’ second quarter 2013 commentary.