HLP: the protocol vault
The Hyperliquidity Provider is a protocol vault running multiple market-making strategies. It also performs backstop liquidations through its liquidator vault component, supplies USDC in Earn, and accrues a portion of trading fees. It is fully community-owned, which is the point: strategies that on other venues are reserved for the exchange or privileged market makers are open to anyone who deposits.
The deposit lock-up is 4 days from your most recent deposit. HLP can and does lose money — it takes the other side of flow and absorbs liquidations, so its PnL is a real trading result, not a yield.