MYY - ProShares Short MidCap400 declares quarterly distribution of $0.0990 December, 23 2022 08:36 AM ProShares Short MidCap400 ProShares Short MidCap400 ( NYSEARCA: MYY ) - $0.0990 . Payable Dec 30; for shareholders of record Dec 23; ex-div Dec 22. For further details see: ProShares Short MidCap400 declares quarterly distribution of $0.0990