Binance October 10 Crash: Pricing, Depegs and the Cascade

Video transcript

A tariff threat hit a leveraged crypto market on October 10, 2025. Most damage was leverage. Some came from how exchanges priced collateral and closed winning positions.

CoinGlass data showed more than 19 billion dollars liquidated in under 24 hours. That counts positions forcibly closed, not money lost.

USDe briefly fell below 66 cents on Binance. Ethena's CEO said other venues deviated 30 basis points or less. Binance says the downturn came before the depegs.

Binance marked USDe, WBETH and BNSOL to its own books. As a book thins, the price drops, accounts lose margin, liquidations sell into the same book, and the mark falls further.

Binance said it paid about 283 million dollars to affected collateral holders, then announced a 400 million dollar relief program, without accepting liability.

When insurance funds ran dry, several venues invoked auto-deleveraging. On Hyperliquid, about 2.1 billion dollars of positions closed in 12 minutes, per Gauntlet's Tarun Chitra.

The lessons: price collateral across several venues, blend in redemption value, keep deposits and withdrawals up under load, expire stale orders, and size insurance funds for many markets failing at once.

Read the full breakdown, or talk to Guardian about risk ratings that score pricing assumptions and liquidation behavior before the next cascade.

On Friday, October 10, 2025, crypto had what Cointelegraph called the largest liquidation event in the industry's history.

Most of it was leverage meeting a macro shock. Some of it came from how exchanges priced collateral and closed winning positions.

This post reconstructs the day from exchange statements and reporting, then draws the lessons for risk engines. It gives no verdict on any venue.

What Happened on October 10

That day, President Trump threatened a 100% tariff on Chinese imports from November 1, Cointelegraph reported. US stocks closed lower, and Bitcoin kept falling after the close.

Bitcoin briefly fell below $110,000. Total crypto market value dropped from $4.24 trillion on Friday to $3.79 trillion on Sunday, per Cointelegraph.

CoinGlass data showed more than $19 billion of leveraged positions liquidated in under 24 hours, across more than 1.6 million accounts, The Defiant reported.

The Block, also citing CoinGlass, counted about 1.7 million traders liquidated.

A liquidation total is not a loss total. As Cointelegraph noted, it counts positions forcibly closed, not money traders lost.

Binance's own timeline, as reported, runs like this:

Binance also blamed some altcoin drops on years-old limit orders, some from 2019, that filled at sharply lower prices.

ATOM briefly traded below $0.01 on Binance before recovering to about $3.50, The Block reported.

Internal vs External Price Sources

The sharpest venue-specific damage came from how Binance priced three collateral assets.

USDe briefly fell below $0.66 on Binance, The Block reported. Ethena CEO Guy Young said deviations on other venues were 30 basis points or less, per Cointelegraph.

Young said the gap was "isolated to a single venue, which referenced the oracle index on its own orderbook." He added that deposit and withdrawal problems kept market makers from closing it.

Minting and redemption kept working, he said, with about $2 billion of USDe redeemed in 24 hours.

Binance's staking tokens, WBETH and BNSOL, also depegged on the exchange, The Block reported.

On Saturday, Binance moved their margin pricing from its own spot prices to the official staking conversion ratios, Cointelegraph reported. The change had been scheduled for October 14.

Binance's position is that "the extreme market downturn occurred before the de-pegging," per The Block.

The crash was market-wide, but the collateral marks were specific to one venue. Our synthetic stablecoin risks guide covers what that means for USDe holders.

How Collateral Valuation Amplified Losses

Binance's Unified Account marked collateral to its own order books rather than cross-venue reference prices, The Defiant reported.

When the book for a collateral asset thins out, that design creates a loop:

1. The collateral's price drops on one venue's book.
2. Every account using it as margin loses value at once.
3. Liquidations sell collateral into the same thin book.
4. The mark falls further, and more accounts cross their thresholds.

The Defiant summed it up: "A self-referential oracle turned a local liquidity gap into a platform-wide collateral crisis."

Exchange plumbing strained too. The Defiant reported API throttling that left some traders unable to cancel orders or adjust margin.

What Binance paid

Binance said it paid about $283 million in two batches, The Block reported on October 12.

The payouts covered futures, margin and loan users holding USDe, BNSOL or WBETH as collateral who were affected between 21:36 and 22:16 UTC.

On October 14, Binance announced a $400 million Together Initiative, per The Block:

• $300 million in vouchers, from $4 to $6,000 per user.
• Eligibility: a forced-liquidation loss of at least $50 and at least 30% of net assets.
• $100 million in low-interest loans for ecosystem and institutional users.

Binance said the program does not mean it accepts "liability for users' losses."

It also said it would add redemption prices to its index weights and a soft price floor to the USDe reference index.

ADL Across Venues

When liquidations cannot close a bankrupt position and the backstop cannot absorb it, a venue closes profitable positions on the other side. That is auto-deleveraging (ADL).

On October 10, "outsized liquidations exhausted insurance funds and multiple venues simultaneously invoked ADL," Gauntlet CEO Tarun Chitra wrote in a paper on ADL.

Hyperliquid's HLP vault "reportedly earned over $40 million" during the event, according to The Defiant.

Chitra also argues Hyperliquid's queue closed more than the shortfall required. Our auto-deleveraging explainer covers his estimate and Hyperliquid's response.

The Hyperliquid risk breakdown covers the exchange's backstops.

Design Lessons for Risk Engines

Each lesson maps to something that broke on October 10.

Collateral pricing

• Price collateral from several venues, weighted by depth, not one internal book.
• Blend in redemption or conversion value where it exists, as Binance said it would.
• Band redeemable collateral, and alert when the internal mark leaves the band.
• Stress test staked and synthetic collateral at the worst venue price, not fair value.

Venues that price stocks around the clock face the same internal-price problem every weekend. See equity perps explained.

Operations

• Keep transfers, deposits and withdrawals up under peak load. Arbitrage depends on them.
• Expire stale resting orders; some of Binance's dated to 2019.
• Never let cancel and add-margin requests queue behind new orders.

Backstops

Size insurance funds for failures across many markets at once. Publish account-level ADL data, so the response can be checked.

For traders

• Learn how your venue marks each collateral asset you post.
• Use isolated margin for positions you cannot watch.

How Guardian Helps

Guardian's risk ratings for capital allocators underwrite a position on evidence. Oracles, bridges, keepers and upstream protocols are assessed as inherited exposure.

Economic failure paths are scored too: liquidation behavior, pricing assumptions and liquidity depth. Each position gets a score from 0 to 100 that moves when the evidence does.

For venues, Guardian's offchain automation pentest tests price-feed handling, staleness and deviation limits, and whether a stuck job halts safely.

Frequently Asked Questions

What caused the October 10, 2025 crypto crash?

A threat of 100% US tariffs on Chinese imports hit a leveraged market. Forced selling liquidated more than $19 billion in under 24 hours, per CoinGlass. On some venues, own-book collateral pricing and auto-deleveraging added to the damage.

How much was liquidated on October 10?

More than $19 billion in under 24 hours, across more than 1.6 million accounts, per CoinGlass data reported by The Defiant. The Block, also citing CoinGlass, counted about 1.7 million traders. Liquidations measure positions closed, not money lost.

How did Binance compensate users after October 10?

Binance said it paid about $283 million to users whose USDe, BNSOL or WBETH collateral was hit between 21:36 and 22:16 UTC. On October 14 it added a $400 million Together Initiative, with $300 million in vouchers for liquidated users.

Why did USDe fall below $0.66 only on Binance?

Ethena's CEO said Binance priced USDe from its own order book, which was thinner than the main markets, and that deposit and withdrawal problems kept market makers from closing the gap. Binance said the market downturn came before the depegs.

Sources

• The Defiant: The Ultimate 10/10 Crash Autopsy (October 14, 2025)
• Cointelegraph via TradingView: $19B crypto market crash, was it leverage, China tariffs or both? (October 2025)
• Cointelegraph: Explanations of USDe 'depeg' on Binance focus on coordinated attack, oracles (October 12, 2025)
• The Block: Binance pays $283 million in compensation following Friday's depegs (October 12, 2025)
• The Block: Binance launches $400 million initiative to refund users (October 14, 2025)
• arXiv: Tarun Chitra, Autodeleveraging: Impossibilities and Optimization, v3 (February 16, 2026)
• Hyperliquid Docs: Auto-deleveraging (accessed November 6, 2026)
• Guardian: Offchain Automation Pentest