On July 21, the MSRB published its second annual report summarizing interest rate, trading, and other data on municipal variable rate securities reported to the MSRB between early 2009 and April 2011.  The report includes information on the size of the market for auction rate securities, variable rate demand obligations and associated liquidity facilities, trading volume and interest rates, and the number of rate resets.  MSRB ReleaseMSRB Report.