TVL (Total Value Locked)

TVL, or Total Value Locked, is the total dollar value of crypto assets deposited in a protocol's smart contracts at a given moment. It is the most widely quoted measure of size in DeFi, playing roughly the role that assets under management plays for traditional funds. Aggregators calculate it by reading token balances directly from onchain contracts and multiplying by current market prices.

Traders and analysts use TVL to gauge how much capital trusts a protocol. A lending market with deep reserves can support more borrowing, a DEX with large pools quotes better prices, and a vault or index product with growing TVL signals adoption. Because the underlying balances are public, anyone can verify the figure directly onchain instead of relying on self-reported numbers, a meaningful difference from how centralized platforms report their assets.

TVL also has well-known blind spots. It rises and falls with token prices, so a protocol can appear to grow when its holdings have simply appreciated. Double counting is common: a token deposited in one protocol, wrapped, and redeposited elsewhere may be counted twice across the ecosystem. Incentive programs can also rent TVL that leaves the moment rewards stop.

For those reasons, treat TVL as one signal among several, alongside trading volume, fees, and revenue. For asset-backed products such as onchain ETFs and ERC-4626 vaults, the number tends to be more meaningful than average, since it maps directly to the value of the assets backing each share, but it still says nothing about whether those assets will hold their value.