Eaton Vance Investment Management (Eaton Vance) has a track record of muni bond investments dating back to 1978 and, according to recent research, the market is now large enough to justify super funds making specific allocations to the sub-asset class as both a diversifier and added-alpha investments.
A research paper specifically for Australian institutional investors is available for download here!
Note: Launch date below refers to the US Taxable strategy.