MYY - ProShares Short MidCap400 declares quarterly distribution of $0.1584 March, 23 2023 12:07 PM ProShares Short MidCap400 2023-03-23 12:07:01 ET ProShares Short MidCap400 ( MYY ) - $0.1584 . Payable Mar 29; for shareholders of record Mar 23; ex-div Mar 22. For further details see: ProShares Short MidCap400 declares quarterly distribution of $0.1584