Total value locked across DeFi categories
Total Value Locked (TVL) measures the dollar equivalent of assets deposited in DeFi protocols. The DeFi ecosystem is segmented into categories: DEX (decentralized exchanges), lending (Aave, Compound), derivatives (perpetual futures, options), yield farming (interest-bearing strategies), bridges (cross-chain liquidity), and others. As of 2025, total DeFi TVL is roughly $40-60 billion across all categories.
DEXs (Uniswap, Curve) hold the largest TVL share, typically 40-50% of the total, because all trading passes through liquidity pools. Lending protocols hold 20-30%, derivatives hold 10-20%, and the remainder is spread across yield aggregators, bridges, and emerging categories. The TVL distribution reflects where users are deploying capital for returns or trading activity.
TVL as a proxy for protocol health
TVL growth is often cited as a metric of protocol adoption and health, though it can be misleading. A protocol can increase TVL by offering unsustainably high yields (farms that burn capital), attracting mercenary liquidity providers who leave when yields drop. True TVL indicates reliable protocol security, real user volume, and sustainable fee generation. Low TVL can indicate a protocol is unused, insecure, or underutilized. However, some efficient protocols have very high revenue relative to TVL (Curve, for instance, generates tens of millions in fees with less TVL than protocols with low fee revenue), so TVL alone is not a complete health metric.