What causes a crypto crash? Leverage, liquidity, and reflexivity
Traders lost $404M in longs in four hours on October 24. Here's how leverage, thin liquidity, and forced selling turn a dip into a crypto crash.
When bitcoin drops 5% in an hour, everyone wants the reason: a tweet, a whale, a rate decision. That headline is usually only the spark. What turns a normal dip into a crypto crash is borrowed money and thin markets. On Saturday, October 24, 2026, traders lost $404 million in long positions in four hours as bitcoin slipped under $80,000, and most of that selling wasn't anyone's choice. This guide explains the chain reaction behind a crash, the warning signs, and how to avoid being the one forced to sell.
Last updated: October 2026
What causes a crypto crash?
A crypto crash happens when a trigger meets a market that's carrying too much leverage and too little liquidity. The trigger pushes prices down. Leveraged positions get closed automatically, which means more selling. Thin order books let that selling move the price further. Lower prices then set off the next round.
The trigger is only the spark
Triggers come in a few types:
- Macro and policy news. Interest rates, stock-market sell-offs, oil spikes and tariff headlines all move bitcoin.
- Flows. Large outflows from spot bitcoin ETFs mean real selling pressure.
- Crypto-specific failures. A stablecoin losing its peg (Terra's UST in May 2022) or an exchange collapsing (FTX in November 2022, with an $8 billion hole in customer accounts).
The same headline can cause a 2% dip one month and a 15% crash the next. The difference is how the market is positioned when it lands.
Crash, correction, or bear market?
| Type | Speed | Typical driver | Example |
|---|---|---|---|
| Crash | Hours to days | Forced selling: liquidations, panic | March 12, 2020: bitcoin lost nearly half its value in under 24 hours |
| Correction | Days to weeks | Profit-taking after a strong run | A 10–20% pullback in a rising market |
| Bear market | Months to years | Tighter money, failures, falling demand | Nov 2021–Nov 2022: bitcoin fell about 77% |
A crash can happen inside a bull or a bear market. Part of the drop sometimes reverses quickly, because forced selling stops once the leverage is gone.
How leverage turns a dip into a crash
Leverage turns a dip into a crash because leveraged positions are closed automatically once losses reach a set level, and those closures are market sells. Each forced sale pushes the price lower, which reaches the next group's liquidation price.
How a liquidation cascade works
A trader who opens a 10x long on perpetual futures puts up 10% of the position as margin. A drop of under 10% can wipe out that margin, so the exchange closes the position by selling. Lending platforms work the same way: when collateral falls below a set loan-to-value ratio, it's sold to repay the loan.
The cascade looks like this:
- A trigger pushes the price down a few percent.
- The most leveraged longs hit their liquidation prices and are sold at market.
- That selling pushes the price into the next cluster of liquidation prices.
- Steps 2 and 3 repeat until the leverage is cleared out or buyers absorb the selling.
A real example: October 24, 2026
The October 2026 drop shows the pattern on a small scale:
- The setup. Bitcoin nearly reached $85,000 on October 21. The next day, US tech stocks fell 2.6%, oil rose more than 3%, and spot bitcoin ETFs saw $635.5 million of outflows, their largest single day since June 25.
- The cascade. On Saturday, October 24, about $436 million of positions were liquidated in four hours, and $404 million of that (about 93%) were longs. In one 15-minute window, $208 million of longs were closed.
- The result. Bitcoin fell to about $79,200, its lowest in more than a month, then climbed back above $80,000 within hours. More than 200,000 traders were liquidated over 24 hours.
The quick bounce is common after a liquidation-driven drop. Once forced sellers are gone, there's less pressure on the price.
Why thin liquidity and reflexivity make it worse
Thin liquidity makes crashes worse because the same amount of selling moves the price further when fewer buy orders are waiting. Reflexivity, falling prices that cause more selling, then keeps the loop going.
Order books thin out when you need them most
Liquidity means how much can be bought or sold near the current price. In calm markets, market makers keep orders on both sides. In a sharp drop, many widen their prices or step away to limit their own risk. That leaves forced sellers hitting fewer and lower bids.
Timing matters too. Crypto trades 24/7 with no trading halts, while spot ETF holders can't trade on weekends. Thin weekend liquidity added to the pressure on October 24, 2026.
Reflexivity: when falling prices cause more falling
Reflexivity means the price drop changes behaviour in a way that pushes the price down further. In crypto, it shows up as:
- Collateral losing value. Crypto used as loan or margin collateral is worth less, so more positions cross their liquidation line.
- Stablecoins under stress. If a stablecoin's backing depends on crypto prices or trading activity, a crash can push it off its peg, which triggers more selling. Our guide to stablecoin types explains which designs carry that risk. Terra's collapse in May 2022 erased about $45 billion this way.
- Fear and outflows. Holders sell because others are selling, and funds see redemptions.
October 10, 2025: all three at once
The largest tracked liquidation day so far shows how these combine:
| Factor | What happened |
|---|---|
| Trigger | A 100% tariff on Chinese imports was announced at 14:57 UTC |
| Leverage | Funding on BTC and ETH perps had risen from about 10% to nearly 30% annualized by October 6 |
| Cascade | More than $19 billion liquidated across more than 1.6 million accounts; $3.21 billion in a single minute |
| Liquidity | Top-of-book bitcoin depth fell by more than 90% on key venues; spreads widened from fractions of a percent to double digits |
| Reflexivity | One exchange's internal price for the USDe stablecoin fell to the mid-$0.60s, marking down collateral and liquidating more accounts |
| Price | Bitcoin fell from $122,574 to $104,782, about 14.5% |
Warning signs, and how to avoid being the forced seller
Crashes can't be timed, but crowded leverage leaves visible signs. The most useful step is to make sure a sudden drop can't force you to sell.
Signals worth watching
| Signal | What it tells you |
|---|---|
| High positive funding rates | Longs are paying a lot to stay open; the trade is crowded |
| Open interest rising faster than price | More of the market is borrowed money, so a drop can force more selling |
| Large ETF outflows | Fund investors are selling, often for several days in a row |
| Weekends and holidays | Thinner order books; moves can be sharper |
| A big round number just below the price | Stop orders and liquidation prices often sit near levels like $80,000 |
None of these predicts the day. They tell you when the market can't absorb much bad news.
A checklist for volatile weeks
- Keep leverage low, or skip it. Lower leverage puts your liquidation price further away. In Coin98 Futures, leverage starts at 1x by default and only goes up if you choose it.
- Use isolated margin. Isolated margin limits a liquidation to the margin on that one position. Coin98 Futures uses isolated margin only.
- Set a stop-loss in the right place. In Coin98 Futures, a stop-loss only works if it sits between the current price and your liquidation price. Expect it to fill below your trigger in a fast market. Our guide to stop-loss vs stop-limit orders explains why.
- Don't borrow against your long-term coins close to the limit. A crash is when collateral gets sold at the worst price.
- Decide your plan before the drop. If you hold spot crypto without leverage, a crash can't force you to sell. Panic selling is the only way it turns into a realised loss.
FAQ
Why is crypto down today?
Most sharp drops start with a trigger, such as stock-market weakness, rate expectations, ETF outflows or a crypto-specific failure. The size of the move depends on how much leverage was in the market. Check whether large liquidations happened alongside the drop; if so, forced selling did much of the work.
What is a liquidation cascade?
A liquidation cascade is a chain reaction in which falling prices force leveraged positions to close, and those forced sales push prices low enough to close the next group. It continues until the leverage is cleared or buyers step in.
Why does crypto crash on weekends?
Crypto trades around the clock, but many market participants, including spot ETF investors, can't trade on weekends. Thinner order books mean the same amount of selling moves the price further.
Can you predict a crypto crash?
Not the exact timing. High funding rates, rising open interest and heavy ETF outflows show when the market is vulnerable. They don't tell you what will trigger the drop or when.
Will a stop-loss protect me in a crash?
It limits losses, but it doesn't guarantee your price. A stop-loss becomes a market order, and in a fast crash it can fill well below the level you set. On a leveraged position, it also needs to sit above your liquidation price for a long.
Is a crash a good time to buy?
Sometimes prices recover quickly once forced selling ends, but not always. Some crashes are the start of a longer bear market. If you buy, we suggest doing it without leverage and in amounts you could hold through a further drop.
Conclusion
A crypto crash is rarely about one headline. It's a trigger meeting crowded leverage and thin liquidity, followed by a loop of forced selling. You can't control the trigger, but you can control your exposure: low leverage, isolated margin and well-placed stops. Coin98 Futures in Coin98 Super Wallet uses isolated margin and lets you set a stop-loss before you open a position.
