The SIFMA Municipal Swap index is a 7-day high-grade market index comprised of tax-exempt VRDOs reset rates that are reported to the Municipal Securities Rule Making Board's (MSRB's) SHORT reporting system. The index is calculated on an actual/actual basis and is published every Wednesday by 4 p.m. Eastern Time. The bonds going into the index are selected from all eligible bonds reporting data through the SHORT system that meet the index criteria as set forth by SIFMA. The index is calculated by Bloomberg as the calculation agent for SIFMA. More information about the index and criteria can be obtained from the SIFMA website. Prior to 8/20/14, Thomson Reuters was the calculation agent for the index.