On June 5, 2023, Phemex will adjust the tick size (minimum change in unit price) for SUSHI/USDT, SUSHI/USD,  LUNC/USDT & OMG/USDT contract trading pairs.

Source: https://phemex.com/announcements/adjustments-to-tick-size-for-sushi-lunc-omg-contract-trading-pairs