What Is DeFi — The Experiment of Finance Without Banks
Can lending and trading happen without intermediaries like banks or brokerages? DeFi attempts exactly this on the blockchain. But that experiment came with large drawdowns as well.
What DeFi Is
DeFi (decentralized finance) refers to services that perform financial functions such as lending, deposits, and trading through blockchain smart contracts (self-executing code), without a central institution like a bank.
Instead of intermediaries, transactions are processed automatically according to the rules coded into the program. In theory, anyone can participate, and it runs 24 hours a day.
But 'there is no intermediary' also means 'there is no party to take responsibility and reverse things when something goes wrong.'
The Surge and Crash of Total Value Locked (TVL)
The size of DeFi is often measured by Total Value Locked (TVL) — the sum of assets locked in DeFi services.
During the so-called 'DeFi Summer' of 2020, TVL exploded from under $1 billion to more than $15 billion by September. It then peaked at an all-time high of about $177 billion around November 9, 2021 (some tallies put it near $200 billion).
However, the subsequent market downturn shrank it sharply, and by around 2026 it was tallied at levels in the $70 billion range. That is a contraction of more than 60% from the peak.
TVL figures differ by aggregator (peak of roughly $177 billion to $200 billion). Source: Statista DeFi TVL (2018-2025), Coinlaw DeFi Statistics 2026. Research also notes that TVL can be inflated above reality through wrapping and leverage double-counting (Springer, 'Piercing the Veil of TVL').
Distinctive Risks
DeFi carries new risks in proportion to its new conveniences.
1. Smart contract bugs and hacks — If a flaw in the code is exploited, assets can be drained entirely. 2. Regulatory uncertainty — Legal status differs by country and keeps changing. 3. Contagion risk — Many services are intertwined, so the collapse of one can spread in a chain reaction. 4. Extreme volatility — TVL itself can be cut in half within a few months.
DeFi is conceptually interesting, but you must remember that 'decentralized' does not mean 'safe.'
This article does not encourage participation in DeFi. It explains, for educational purposes, that this is a high-risk area where total loss of principal is possible.
Preguntas frecuentes
Q. Does DeFi pay interest like a bank deposit?
Some services pay interest in exchange for deposits, but unlike a bank deposit there is no deposit insurance and there is risk of principal loss and hacking. 'High interest' is the price of correspondingly high risk.
Q. Is it safe if TVL is high?
No. TVL is a size metric, not a safety metric, and it can be inflated above reality through wrapping and leverage. Even after TVL hit its all-time high in 2021, there were large declines.
Páginas relacionadas
📋 Los resultados se basan en datos históricos; las rentabilidades pasadas no garantizan rentabilidades futuras.
📋 Este servicio se ofrece con fines educativos para ayudarte a entender la inversión, no como asesoramiento de inversión.