LUNA and UST Collapse, How $60 Billion Vanished in 72 Hours

The LUNA/UST collapse is the most studied event in crypto history and the least understood. Analysts focus on the drama — the tweets, the prison sentence, the Bitcoin reserves burned to nothing. We focus on the mechanism, because the mechanism is what repeats.

The Setup: What Terra Was

Terra was a blockchain network. Its flagship product was UST: a stablecoin pegged to $1.00. What made UST different from USDC or USDT was its backing mechanism. USDC is backed dollar-for-dollar by real dollars held in regulated banks. UST was backed by nothing except an algorithm and a sister token called LUNA.

The mechanism worked like this. If UST traded above $1.00, users could burn $1.00 worth of LUNA to mint 1 UST and pocket the difference. If UST traded below $1.00, users could burn 1 UST to receive $1.00 worth of LUNA and pocket the difference. Arbitrageurs were supposed to keep the peg stable by exploiting these imbalances in real time.

This works in a world where the system is growing or stable. It fails catastrophically when the system is shrinking, because shrinkage triggers the exact mechanism that accelerates shrinkage further.

The Anchor Protocol Trap

The ecosystem's growth engine was Anchor Protocol, a lending and borrowing platform on Terra that offered depositors a fixed 19.5% APY on UST. This rate was not market-determined. It was subsidized by the Luna Foundation Guard (LFG), the organization that controlled Terra's treasury.

At $19.5 billion in deposits at peak, Anchor was paying out approximately $3.8 billion per year in yield. The protocol was generating approximately $400 million per year in borrow fees. The gap — roughly $3.4 billion annually — was being covered by LFG reserves. These reserves were finite.

Do Kwon knew the rate was unsustainable. He announced in March 2022 that Anchor rates would begin declining. But the decline announcement accelerated the timeline: sophisticated holders began reducing UST positions, and the outflow pressure began building weeks before the terminal event.

May 7–13, 2022: The 72-Hour Death Spiral

May 7: A large entity — widely suspected to be a coordinated attack, though never definitively proven — began selling large quantities of UST on Curve Finance, the primary liquidity venue for stablecoin trading. UST began trading at $0.985, then $0.972, then $0.960. The peg was showing visible stress for the first time.

May 8–9: The depegging triggered the exact mechanism Terra's designers had intended as a safety valve, but which became the accelerant. Users began redeeming UST for $1.00 worth of LUNA. This minting of new LUNA diluted the existing supply, which reduced LUNA's price, which reduced the dollar value of the LUNA being minted to back each UST, which required minting even more LUNA to maintain the peg, which diluted the supply further.

The hyper-inflation of LUNA supply began. On May 9, Luna Foundation Guard began deploying its $3.5 billion BTC reserve to buy UST and support the peg. It was insufficient. Every dollar of BTC deployed was absorbed by sellers who had already decided the peg was broken.

May 10–11: UST traded at $0.60. LUNA, which had been $119 at its peak weeks earlier, collapsed through $10, through $1, through $0.10. The LUNA supply had expanded from 350 million tokens to over 6 trillion tokens — a 17,000x dilution — in an attempt to maintain the UST peg that was failing anyway.

May 12–13: UST reached $0.006. LUNA reached $0.00001. Both were functionally dead. Terraform Labs halted the Terra blockchain twice to prevent further damage. By the time trading resumed, $60 billion in combined market cap had been erased. The $3.5 billion BTC reserve was gone. Every Anchor Protocol depositor, every LUNA holder, every protocol built on Terra was destroyed.

The Cascading Consequences

LUNA was not contained. Its collapse was the first domino in the worst year crypto has ever experienced.

Three Arrows Capital had $462 million in confirmed LUNA/UST exposure. The collapse wiped their balance sheet and triggered $3.5 billion in creditor losses. Voyager Digital had $660 million in loans to 3AC — when 3AC defaulted, Voyager filed for bankruptcy with $3.8 billion in customer funds trapped. Celsius held stETH positions that depegged in the same June 2022 period, freezing $4.7 billion. FTX — which had been quietly insolvent for months through Alameda's misuse of customer funds — ran out of runway when the bear market eliminated the trading profits that had been masking the hole. Every domino traces back to the LUNA collapse of May 2022.

Do Kwon: Arrogance, Flight, and 15 Years

Do Kwon's public record before the collapse is instructive. In February 2022, he tweeted: "I don't debate the poor on Twitter." In March 2022, when Fatman and other analysts published detailed mathematical proofs that the Anchor yield was unsustainable and UST was vulnerable to a bank run, Kwon responded with contempt. He was publicly dismissive of every critic who subsequently proved correct.

After the collapse, Kwon fled. Interpol issued a red notice. He was found in Montenegro in March 2023 with forged Costa Rican documents. He was extradited to South Korea, then to the United States. In April 2025, Do Kwon was convicted on multiple counts of securities fraud, commodities fraud, wire fraud, and market manipulation. He was sentenced to 15 years in federal prison.

The Lesson: Why Algorithmic Stablecoins Cannot Survive a Bank Run

The LUNA death spiral was not a Black Swan. It was a mathematically predetermined outcome under stress conditions that were always possible. Every algorithmic stablecoin that maintains its peg through mint-and-burn mechanics with an endogenous backing asset faces the same structural vulnerability: when confidence breaks, the mechanism that was supposed to restore confidence becomes the instrument of destruction.

Collateral-backed stablecoins (USDC, USDT, DAI with real collateral) can survive bank runs because the assets backing them exist independently of the stablecoin's price. Algorithmic stablecoins backed by their own ecosystem token cannot survive a bank run because redemption pressure destroys the very asset being used to fund redemptions.

Iron Finance/TITAN demonstrated this in June 2021, eleven months before LUNA. The crypto industry did not learn. $60 billion later, the lesson is now hard to ignore.

We track every active algorithmic stablecoin experiment in the pipeline. The structural vulnerability is present in every design that relies on endogenous assets as backing. When we identify these structures, we flag them — regardless of yield, regardless of celebrity backing, regardless of how impressive the team's credentials appear. The math does not negotiate.

Author: Early Thunder Research Data sources: Terra blockchain on-chain data, LFG transaction records, Chainalysis, court filings (US v. Kwon), DeFiLlama, CoinGecko, Curve Finance pool data Last updated: 2026-05-21

This content is for informational purposes only and does not constitute financial advice.