Description to the Standard & Poor's California AMT-Free Municipal Bond Fund, traded under ticker symbol CMF: This ETF is a fund, created in October 2007, that corresponds to the price and yield performance, before fees and expenses, of the California municipal bond sector of the United States municipal bond market as defined by the Standard & Poors California AMT-Free Municipal Bond Index. The underlying index looks at issuers in the municipal bond market in California that are exempt from US federal and state income tax, and the alternative minimum tax. The index is a subset of the Standard & Poor's National AMT-Free Municipal Bond Index.