When $20 Billion Vanished in Hours
Friday wasn’t just bad for crypto—it was historic. Over $20 billion got liquidated as Bitcoin dropped 13% in a single hour and some altcoins briefly hit near-zero. Bitwise portfolio manager Jonathan Man calls it the worst liquidation event crypto’s ever seen, and the damage went way beyond headline losses.
Here’s what happened when the market’s plumbing failed, why some traders walked away fine while others got wrecked, and what it means for positioning going forward.
How $65B in Open Interest Disappeared
Man estimates roughly $65 billion in open interest vanished—resetting crypto futures markets to July levels overnight. We’re talking perpetual futures (perps), those cash-settled contracts that track spot prices through funding payments instead of delivery dates.
When things get messy, profits and losses settle against a shared margin pool. Friday got really messy.
Bitcoin’s 13% hourly drop was brutal, but long-tail tokens? Absolute carnage. ATOM reportedly fell to “virtually zero” on some exchanges before bouncing back. That’s not a typo—that’s what happens when liquidity disappears and order books go thin.
Why Liquidations Cascaded and Where They Stopped
When uncertainty spikes, market makers widen spreads or step back entirely. Suddenly there’s no one on the other side of distressed trades, and organic liquidations can’t clear at bankruptcy prices.
That’s when exchanges pull the emergency brake.
Auto-Deleveraging Kicked In
Some venues forcibly closed profitable positions because there wasn’t enough cash on the losing side to pay winners. It’s the nuclear option, but it keeps the system from collapsing entirely.
Hyperliquid’s Vault Had a Field Day
Man points out that Hyperliquid’s HLP liquidity vault “had an extremely profitable day”—buying assets at fire-sale prices and selling into the subsequent spikes. That’s the trade: absorb panic, profit from the rebound.
What Broke vs. What Held
Centralised exchanges saw the worst dislocations. Thin order books meant long-tail tokens broke harder than Bitcoin and Ethereum, and Man notes ETH-USD spreads hit $300+ between Binance and Hyperliquid at certain points.
DeFi? Surprisingly calm. Two reasons:
Blue-chip collateral bias: Major lending protocols like Aave and Morpho primarily accept BTC and ETH, which held up better than obscure altcoins.
USDe price hardcoding: Platforms hardcoded Ethena’s USDe stablecoin to $1, preventing cascade risk—even though it traded around $0.65 on centralised venues during peak illiquidity. If you posted USDe as margin on a CEX, you got liquidated. On DeFi, you were protected.
The Hidden Risk No One Talks About
Directional bets weren’t the only danger. Man highlights what really keeps market-neutral fund managers up at night: operational risk.
Can your algorithms keep running? Will exchanges stay online? Are price marks accurate? Can you move margin and execute hedges in time?
He checked in with several managers who reported they were fine, but suspects “some c-tier trading teams got carried out.” Translation: the pros survived, but weaker operations probably blew up.
What Happens Next
Prices recovered from their lows by Saturday, and the forced deleveraging created opportunities for traders with cash ready. With open interest down sharply, Man says markets entered the weekend on firmer footing than Friday morning.
The takeaway? Leverage kills—especially when liquidity vanishes. Friday proved that even billion-dollar markets can turn into air pockets when everyone’s heading for the exit at once.
If you’re trading perps, know your venue’s safety mechanisms. If you’re holding USDe, understand where it’s priced. And if you’re running serious size, operational infrastructure matters as much as your strategy.
FAQ
Q1: What caused the $20 billion crypto liquidation event?
A: A rapid 13% Bitcoin drop combined with vanishing liquidity triggered cascading forced liquidations across exchanges. Thin order books in long-tail tokens amplified losses, while emergency deleveraging mechanisms kicked in to prevent total system failure.
Q2: What are perpetual futures and why did they matter here?
A: Perpetual futures (perps) are cash-settled contracts that track spot prices through funding payments, with no expiry date. When markets crash, profits and losses settle against shared margin pools—meaning exchanges sometimes need to forcibly close positions to keep books balanced.
Q3: Why did DeFi platforms handle liquidations better than centralised exchanges?
A: DeFi lending protocols mostly accept blue-chip collateral like BTC and ETH, which held value better. Additionally, platforms like Aave hardcoded USDe’s price to $1, preventing cascade liquidations—while CEXs saw USDe trade at $0.65, triggering margin calls.
Q4: What is auto-deleveraging and when does it happen?
A: Auto-deleveraging (ADL) is an emergency tool exchanges use when there isn’t enough losing-side capital to pay winners. It forcibly closes part of profitable positions to keep the system solvent during extreme volatility.
Q5: How did Hyperliquid’s liquidity vault profit during the crash?
A: Hyperliquid’s HLP vault absorbed distressed selling at deeply discounted prices, then sold back into the market as prices rebounded—essentially providing liquidity when order books were empty and capturing the spread.
DISCLAIMER
Effective Date: 15th July 2025
The information provided on this website is for informational and educational purposes only and reflects the personal opinions of the author(s). It is not intended as financial, investment, tax, or legal advice.
We are not certified financial advisers. None of the content on this website constitutes a recommendation to buy, sell, or hold any financial product, asset, or service. You should not rely on any information provided here to make financial decisions.
We strongly recommend that you:
- Conduct your own research and due diligence
- Consult with a qualified financial adviser or professional before making any investment or financial decisions
While we strive to ensure that all information is accurate and up to date, we make no guarantees about the completeness, reliability, or suitability of any content on this site.
By using this website, you acknowledge and agree that we are not responsible for any financial loss, damage, or decisions made based on the content presented.
MORE NEWS
Disclosure & Editorial Standards
MJBurrows is not authorised or regulated by the Financial Conduct Authority (FCA). The content on this website — including articles, calculators, and tools — is for general informational and educational purposes only. It does not constitute personal financial, investment, tax, or legal advice and does not take into account your individual circumstances, financial situation, or objectives.
Nothing on this site is a personal recommendation to buy, sell, hold, or otherwise deal in any financial product, asset, or service. You should always conduct your own research and seek advice from a qualified, FCA-regulated financial adviser before making any financial decisions.
Our calculators produce estimates based on simplified models using HMRC-published rates for the current tax year. They cannot account for every individual circumstance and should not be relied upon as exact figures. Tax rules and rates may change — verify current rates with HMRC or a qualified tax adviser.
Projections are not guarantees. Where our tools show future values (investment growth, pension projections, compound interest), these are hypothetical illustrations based on assumed growth rates. Past performance does not guarantee future results. The value of investments can go down as well as up.
Market data displayed on this site is provided by third-party sources including Twelve Data, Yahoo Finance, and CoinGecko. We do not guarantee the accuracy, completeness, or timeliness of third-party data.
This content is designed for UK residents and reflects UK tax rules, thresholds, and legislation. It may not apply to other jurisdictions.
Using this website does not create a professional-client relationship of any kind. MJBurrows is not responsible for any financial loss, damage, or decision made based on the content presented. By using this site, you accept these terms.
This disclaimer may be updated from time to time without prior notice. Last reviewed: 23 April 2026.
MJBurrows is an independent UK personal finance publication, written and edited by Matthew Burrows. There is no parent company, no investor group, and no advertising sales team — decisions about what to cover and how to frame it are made by Matthew alone. Our full Editorial Policy sets out how the site operates in detail.
Commercial model. As of April 2026, MJBurrows generates no revenue. The site carries no display advertising, no affiliate links, no sponsored content, no paid product placements, and no pay-for-coverage arrangements. If this changes in future, it will be disclosed openly on the Editorial Policy page.
Sources. Articles and tools reference primary sources — HM Revenue & Customs (HMRC), gov.uk, the Bank of England, the Office for National Statistics (ONS), the Financial Conduct Authority (FCA), Companies House, and UK government departmental publications (DWP, Treasury). Calculator data uses HMRC-published rates for the 2026/27 tax year. Market data (tickers, asset prices) is provided by Twelve Data, Yahoo Finance, and CoinGecko.
Verification. Every published article is fact-checked before going live. Numerical claims are traced to their primary source, quotes are checked against the original speaker or document, and calculator outputs are tested against HMRC worked examples. See our verification and accuracy policy for the full process.
Corrections. If you spot an error, please report it via the Corrections page. A three-tier severity system commits to specific response times:
- Tier 1 — Urgent (material reader harm, defamatory statements, regulatory or legal issues): acknowledged within 24 hours, page actioned within 24 hours, correction published within 48 hours of confirmation.
- Tier 2 — High (significant factual errors that misinform readers): acknowledged within 3 working days, correction published within 7 working days of confirmation.
- Tier 3 — Standard (minor factual errors, dated references, missing context): acknowledged within 7 working days, correction published at the next regular content review (within the quarter).
Significant corrections are logged on the public Corrections log.
Updates and review cadence. Calculators are reviewed at least quarterly, plus event-driven updates when HMRC publishes new rates (Budget, Autumn Statement, new tax year). Guides are reviewed at least twice a year, with major rewrites whenever underlying regulation changes. Tax-year-sensitive content is prioritised for review at the April tax-year transition.
Get in touch. For editorial enquiries — corrections, story tips, reader questions — the address is contact@mjburrows.com. The contact page is at mjburrows.com/contact. Every email is read personally by Matthew.
