Marinade Staked SOL (MSOL) Price

mSOL is the liquid-staking token for a SOL staking position in the Marinade pool. After depositing SOL and joining the pool, a user receives mSOL; it represents the staked SOL in the pool and its accumulated rewards, so it can be transferred or used in DeFi applications that support it without unstaking first. It is not another independent asset redeemable for SOL at a fixed 1:1 rate. mSOL’s redeemable value relative to SOL changes with staking rewards in the pool; holders can later use mSOL to exit the corresponding SOL position and the rewards already accounted for under protocol rules.

After a user deposits SOL, mSOL is minted at the prevailing mSOL/SOL exchange rate: the SOL amount is divided by the amount of SOL represented by each mSOL at that time to determine the minted amount. The deposited SOL simultaneously enters the pool’s staked balance, so minting is not uncollateralized issuance. An existing Solana stake account can also be used as the deposit source, but under stricter conditions: it must contain at least 1 SOL, be fully activated, have no active lockup, and be delegated to a validator in Marinade’s validator set. Once those conditions are met, the protocol obtains the account’s stake and withdrawal authority, counts it in the current epoch’s and total staking orders, and mints mSOL at the prevailing rate; accounts that do not meet them cannot directly use this route.

mSOL staking rewards are reflected in the exchange rate, rather than by sending additional reward tokens to a wallet. The protocol’s core calculation is: mSOL price = `total_staked / tokens_minted`; `total_staked` is the total accounted staked SOL in the pool, and `tokens_minted` is the number of mSOL minted. At the end of each Solana epoch, staking rewards received by the pool are added to `total_staked`, and the protocol updates the mSOL price. As long as the pool actually receives rewards, the same amount of mSOL subsequently represents more SOL; the holder’s mSOL balance does not change, and there is no claim button or claim deadline. The related value is reflected with the token when mSOL is redeemed, sold, or otherwise transferred.

mSOL has no preset fixed total supply. When users deposit SOL, the protocol mints mSOL at the then-current exchange rate; when users start delayed unstaking, the submitted mSOL is burned. Supply therefore reflects changes in positions entering and leaving the Marinade staking pool. Minting itself does not “dilute” existing holders in the same sense: SOL deposited for newly minted mSOL is added to `total_staked` at the exchange rate applicable at the same time. By contrast, staking rewards increase the numerator, `total_staked`, rather than the number of mSOL in holders’ wallets; this is why rewards accrue through the exchange rate.

With delayed unstaking, mSOL is converted into SOL at the mSOL price when the process is initiated, and a 0.2% protocol fee is charged. The protocol first issues a claim ticket stating the amount and maturity time and burns the mSOL; bots execute the unstaking, and the user must claim SOL with that ticket after maturity. Receipt time depends on when it is initiated in epoch N: if initiated shortly after the epoch begins or during the normal period, it can usually be claimed at the beginning of N+1; if initiated in the final 2 hours of the epoch, it can be claimed at the beginning of N+2. An epoch is currently about 1 day, though its actual length varies with slot time. This route has a minimum amount equivalent to 1.0043 SOL; mSOL below that threshold must use the instant swap route.

The protocol-calculated mSOL/SOL redemption value and a secondary-market execution price are not the same concept. The former is determined by the pool’s `total_staked / tokens_minted`; the latter is determined by the order book and liquidity of a particular trading pair at that time. Therefore, when an mSOL pair is imbalanced, its market execution price may be above or below the protocol-calculated value. An instant exit is essentially an mSOL→SOL DEX swap routed through Jupiter, not a protocol redemption at a fixed exit price. Marinade does not charge an unstaking fee for this route, but the SOL ultimately received is still affected by routing fees, bid-ask spread, and price impact, and a large trade may move the execution price. The interface shows an estimated received amount including these market costs; users who do not accept the quote can instead use delayed unstaking, which has a waiting period and a 0.2% protocol fee.

mSOL can be used in DeFi protocols that support it as collateral, a lending or borrowing asset, a liquidity-provision asset, or a trading asset; this lets the staking position remain usable while held. Whether mSOL is accepted, its collateral ratio, liquidation rules, and liquidity-pool rules are each determined by the relevant application, not guaranteed by the mSOL protocol itself. What is transferred, sold, or deposited into an application is the mSOL receipt itself, so the corresponding staking position and the value reflected in the exchange rate move with it. Once the original holder no longer holds mSOL, they no longer hold the entitlement to the position’s future exchange-rate accrual; additional participation in lending or liquidity pools also introduces separate risks from that application, including smart-contract, liquidation, or impermanent-loss risk.

SOL in the mSOL pool is automatically delegated by Marinade through the Stake Auction Marketplace (SAM), rather than each mSOL holder selecting a validator. Each epoch, validators that meet eligibility requirements and have sufficient bond are ranked by the best yield terms they offer stakers; Marinade allocates and rebalances stake to the highest-ranked ones subject to decentralization constraints. Accordingly, the pool’s reward performance is affected by validators’ yield bids, eligibility, and delegation results each epoch. Protected Staking Rewards (PSR), introduced in April 2024, provide bond-funded compensation for specified validator performance losses. It applies only to stake Marinade delegates to validators that have provided a PSR bond, and does not cover SOL users delegate themselves outside Marinade. There are only two triggering events: LowCredits, where a validator is offline for an extended period and misses rewards, and CommissionIncrease, where a validator unexpectedly raises commission mid-epoch; not every commission adjustment triggers it. PSR also does not charge a bond as soon as any deviation occurs: the first 1 percentage point of losses caused by downtime, and the first 1 percentage point of a mid-epoch commission increase, are within the grace range. No bond is charged if the deviation does not exceed that threshold; once it is exceeded, that 1 percentage point is not a deductible first taken from a larger loss. Under the current rules (MIP-23, effective from epoch 1040), a triggered downtime loss is fully covered by the validator’s own bond, and the Marinade DAO no longer bears part of it. The mechanism does not guarantee mSOL’s secondary-market price or eliminate other protocol, liquidity, or validator risks.