After launching just five months ago, Schwab ETFs have already surpassed $1 billion in assets.

Introduced in November 2009, the Schwab exchange traded funds have enjoyed rapid adoption due to low operating expense ratios and commission-free online trading in Schwab accounts.

The first four Schwab ETFs were launched November 3, 2009 including the Schwab U.S. Broad Market ETF (SCHB), the Schwab U.S. Large-Cap ETF (SCHX), the Schwab U.S. Small-Cap ETF (SCHA) and theSchwab International Equity ETF (SCHF).

Follow-on Schwab offerings include the Schwab U.S. Large-Cap Growth ETF (SCHG) and the Schwab U.S. Large-Cap Value ETF (SCHV), launched on December 11, 2009 and the Schwab Emerging Markets Equity ETF (SCHE) and the Schwab International Small-Cap Equity ETF (SCHC) which began trading on January 14, 2010.

For more ETF investing choices, see the complete list of Schwab ETFs.