Haven

Haven is a non-custodial leverage trading protocol on Solana that removes the defining risk of leveraged positions: liquidation. Instead of exposing traders to the cliff-edge LTV threshold that traditional lending-based leverage creates, Haven uses automated rebalancing — what its documentation calls "bracketed leverage" or "threshold-based constant leverage" — to keep positions continuously within a safe range regardless of price movement.

How It Works

When a user opens a Haven position, they define a target leverage and an LTV range with a lower and upper bound. Haven then holds the position on-chain through MarginFi, Solana's lending layer, and monitors the loan-to-value ratio in real time.

Two rebalancing actions keep the position within bounds:

• Boost rebalance: When price moves in the trader's favor and LTV falls below the lower threshold (meaning the position is under-leveraged relative to the target), Haven borrows additional funds against the collateral and deposits them back in. This maintains leverage exposure rather than letting gains sit idle.
• Repay rebalance: When price moves against the trader and LTV climbs toward the upper threshold, Haven repays a portion of the debt using collateral. This reduces leverage before the position approaches the liquidation point (100% LTV).

Because the repay rebalance fires well before liquidation territory, the position can withstand sustained adverse moves without being force-closed. A position that would be liquidated on a standard lending platform simply gets de-levered on Haven, preserving the trader's capital minus the market loss.

Position Types and Markets

Haven supports both long and short strategies across multiple token pairs listed on the platform. Strategies are filterable by type — long, short, or ratio — and each pair displays current price, maximum available leverage, liquidity depth, and 24-hour funding rates. The maximum leverage factor for each pair is determined by MarginFi's underlying risk parameters.

A simulation feature lets users test how a strategy would have behaved historically before committing capital, which is useful for understanding the bracketed leverage behavior across different market conditions.

Fee Structure

Haven charges fees only on the rebalanced portion of a position, not the entire position size:

• Boost fee: Between 0.25% and 0.5% of the boost amount, scaling by position size. Positions of $10,000 or less pay up to 0.5%; positions of $250,000 or more pay 0.25%, with a sliding scale in between.
• Repay fee: A flat 0.25% of the repaid amount. The repay fee is set lower specifically to minimize volatility decay.

Because rebalances only trigger when the position drifts outside the defined LTV range, actual fee incidence depends on market volatility and the width of the LTV bracket the user sets.

Key Risk: Volatility Decay

Eliminating liquidation risk does not eliminate loss risk. Haven's documentation is transparent about the tradeoff: bracketed leverage is subject to "volatility decay," a phenomenon where repeated boost-and-repay cycles in a choppy market erode position value more than a simple spot holding. Each rebalance incurs fees and a spread cost, and in oscillating markets these compound. Traders who benefit most are those with high-conviction directional views on assets that trend rather than chop.

Non-Custodial Architecture

Haven operates in a non-custodial model. Positions are controlled by the user's wallet authority; only the position owner can deposit or withdraw funds. Haven's automation layer has permission only to execute rebalances within the parameters the user set at open. This limits trust assumptions — the protocol can rebalance but cannot drain funds.

The on-chain program is deployed at address utoyKBRaHSBHy9RsmXCZMy6nNFAg5FYijrvZyQcNLV on Solana Mainnet and is open-source. Haven's codebase has been audited by Hashlock with no remaining high-severity issues; the audit report is publicly available on GitHub.

Referral Program

Haven runs a referral program that returns 15% of the fees generated by referred users' positions back to the referrer. The program is accessible directly through the platform interface.

Team

Haven was built and is managed by a single doxxed solo founder who maintains a public presence on X. No native protocol token has been issued.

Solana Ecosystem Fit

Haven sits at the intersection of Solana's lending and trading infrastructure, using MarginFi as a borrowing layer while offering a trading interface above it. For traders who want leveraged exposure to Solana-native assets but find perp funding rates or liquidation mechanics unattractive, Haven's bracketed rebalancing model offers a structurally different approach. It launched on Solana Mainnet in November 2024 and is classified as a live trading terminal by on-chain program taxonomy.