TVL

TVL, or total value locked, is the combined dollar value of all crypto assets deposited in a DeFi protocol's smart contracts — the deposits in its pools, vaults, and staking contracts. It is the industry's most cited gauge of a protocol's size and traction: a lending market with billions in TVL is holding billions in user deposits, which signals meaningful adoption and liquidity.

A concrete example: if a lending protocol like Aave holds deposits of ETH, stablecoins, and other tokens worth 10 billion dollars in total across its markets, its TVL is 10 billion dollars. Aggregator sites such as DefiLlama track TVL across protocols and chains, and analysts use it to compare platforms or measure a chain's overall DeFi activity.

TVL has well-known limitations, and a common misconception is treating it as a pure measure of health or safety. Because it is denominated in dollars, TVL rises and falls with token prices even when no deposits move. It can be inflated by double counting — a token deposited in one protocol, wrapped, and redeposited in another counts twice — and temporarily pumped by unsustainable reward emissions that attract mercenary capital. A high TVL means users have entrusted the protocol with significant funds; it does not mean the code is secure, the yield is sustainable, or the deposits will stay.