HLP Vault Deep-Dive

How HLP works in 90 seconds

HLP accepts USDC deposits and deploys that capital into the Hyperliquid on-chain order book as market-making inventory. The vault posts resting limit orders on both the bid and ask side of every perpetual market, earning the bid-ask spread whenever a trader crosses the vault's quote. Unlike a GLP depositor, an HLP depositor does not bear the PnL of Hyperliquid traders - the vault earns spread income regardless of whether a position closes at a profit or a loss.

The vault dynamically adjusts its quotes based on market conditions. During high-volatility periods, the vault widens its spread and reduces position size to avoid adverse selection (being on the wrong side of large directional moves). During calm markets, spreads compress but volume remains consistent, maintaining earnings. The vault runs no leverage itself - all positions are flat (equal bids and asks) unless the strategy manager explicitly takes a directional stance.

Key concepts

Bid-ask spread capture

When a trader buys from the vault's ask or sells to the vault's bid, the vault earns the spread between its quoted price and the mid-market price. For a market with a $1.00 spread, the vault might post bid at $1,841.50 and ask at $1,842.50 - whenever a taker buys at $1,842.50, the vault earns $1.00 per contract, minus any hedge costs.

Maker rebate

Hyperliquid rewards makers (resting orders) with a per-contract rebate that supplements the spread income. HLP earns $0.20-$0.50 per contract in maker rebates on top of the spread, which is why its effective APY often exceeds what the raw spread would suggest.

Adverse selection

Market makers face adverse selection when they consistently post quotes on one side and get filled by informed traders who know the true direction of the market. HLP mitigates this by posting both sides and using hedging algorithms to flatten directional exposure. The wider spreads during volatile periods are also a defense mechanism against informed flow.

Inventory risk

If order flow is asymmetric - more buyers than sellers hitting the vault's ask over an extended period - the vault accumulates a net long position. This inventory carries price risk: if the price drops, the vault's NAV declines even if the spread earned hasn't compensated for the move. HLP's strategy team monitors net inventory and hedges when positions grow too large.

Liquidation buffer

The vault's internal hedging protects against full liquidation, but during extreme events the buffer can be consumed. The liquidation buffer is the estimated percentage move in the underlying price that would cause the vault's internal hedges to be liquidated - expressed as a percentage of the current price.

Why HLP matters

HLP demonstrates that permissionless market-making can work on a purpose-built L1 without the oracle risk and LP PnL dependency that plague AMM-based liquidity provision. By earning the bid-ask spread rather than absorbing trader losses, HLP creates a more stable income stream for depositors. The on-chain order book means every market-making decision is verifiable - there's no hidden internalization of order flow or off-chain market manipulation to worry about.

Frequently asked questions

What is HLP and how does it differ from GLP?

HLP (Hyperliquidity Provider) is Hyperliquid's native liquidity vault where depositors supply USDC that the protocol deploys as market-making inventory. The key difference from GLP (GMX's vault) is architecture: GLP traders trade against a pooled balance sheet where their wins are LPs' losses. HLP takes the opposite side of trader positions but earns the bid-ask spread on every fill - a HLP depositor makes money when volatility creates lots of trading activity, regardless of whether traders win or lose.

How does the HLP vault actually make money?

HLP earns market-making revenue from three sources: the bid-ask spread on each fill (typically $0.40-$1.00 per contract), maker rebates from the protocol, and adverse selection mitigation via hedging. The vault posts bids and asks on both sides of every market, capturing the spread when traders cross it. During high-volatility periods, trading volume surges and the vault earns proportionally more - this is why HLP APY often spikes during big market moves.

What are the main risks for HLP depositors?

HLP depositors face inventory risk: if the vault accumulates a large net position in one direction due to skewed order flow, and the price moves against that position, the vault's NAV declines. The 4-day withdrawal lock prevents last-minute exits, but depositors can still incur losses during trending markets. There's also liquidation risk on any leveraged hedges the vault runs internally. The vault has no explicit insurance or floor - losses flow directly to depositor equity.

How does the vault's leverage parameter work?

The vault's leverage setting controls the maximum position size it can hold relative to its total pool size. With higher leverage, the vault can post larger orders and earn more spread per market move, but also accumulates more inventory risk. HLP operates with dynamic leverage that widens the spread during volatile periods to reduce adverse selection. The leverage parameter is tuned by the protocol's strategy team and is not directly user-configurable.

What is the historical APY range for HLP?

HLP APY has historically ranged from approximately 10% to 35%+ depending on market conditions. During calm periods with moderate trading volume, APY tends toward the lower end (10-18%). During high-volatility periods with heavy trading activity (like major market crashes or rallies), APY can spike to 25-40% as the vault earns the spread on far more contracts. Past performance is not indicative of future results.

How do I calculate my daily yield from HLP?

Daily yield approximates to: (HLP daily trading volume) (average spread per contract) (vault's share of volume) (total HLP TVL). Alternatively, if you know the current APY, divide by 365 for an approximate daily rate. For example, at 20% APY on a $10,000 deposit, daily yield ? $5.48. The actual yield accrues to your vault share value daily and can be realized when you withdraw.

Related reading

• Hyperliquid Overview - the L1 architecture, HyperBFT consensus, and sub-second finality that power HLP.
• GMX GLP Vault - how GLP differs architecturally from HLP and why GLP depositors absorb trader PnL.
• Gains Network GNS - how GNS token accrues value from trading volume and vault performance.
• Perpetual DEXs - compare market-making mechanics across Hyperliquid, GMX, dYdX, and others.
• DeFi Glossary - spread, maker rebate, adverse selection, inventory risk explained.