- CFTC approval made Coinbase perpetual futures legal for US traders. It did not change how trades close.
- The mark price, not the stop-loss, decides when a crypto futures position gets liquidated first.
- A gap of just 1% between the mark price and last traded price can wipe out a leveraged position.
Coinbase’s launch of CFTC-regulated perpetual-style futures opened leveraged crypto trading to U.S. retail investors.
The move marked a key moment. It was the first regulated onshore perpetual futures product available to American retail traders, per reports.
Every major outlet covered the approval.
Almost none covered what the regulation did not touch. The liquidation system that closes a losing position still runs on its own rules, separate from any stop-loss a trader sets.
How the Mark Price System Actually Works
To understand the risk, traders need to understand two prices.
The first is the last traded price on Coinbase. The second is the mark price, a reference rate calculated using data from several exchanges simultaneously.
A stop-loss order watches the last traded price on Coinbase. The liquidation engine watches the mark price. These are not the same number, and they do not always move together.
In calm, liquid markets, the two prices track closely.
The gap between them is often small enough to go unnoticed. But in a sharp, fast sell-off, that gap widens. The mark price can fall faster than the last traded price on a single exchange.
When it does, the liquidation threshold can be reached before the stop-loss ever gets the chance to activate.
Coinbase’s own risk documentation confirms the liquidation system runs independently of any stop-loss order placed by the trader. The stop-loss and the liquidation engine are not linked. They watch different prices and act on different triggers.
What CFTC Approval Changed and What It Did Not
The CFTC approval was a regulatory decision, not a structural one. It determined which entities could legally offer perpetual futures products to US retail traders. It did not rewrite the mechanics of how those products manage risk.
The mark price liquidation model was not invented by Coinbase. Offshore exchanges built it years ago specifically to prevent a known problem: a single large trade on one exchange manufacturing an artificial price spike and triggering mass liquidations.
By pulling price data from multiple exchanges, the mark price smooths out those spikes. Binance, Bybit, and most major global platforms use the same model.
CFTC approval brought that exact model onshore. It handed it to a new class of US retail traders, many of whom have never encountered it before.
Traders coming from traditional stock brokerages carry a straightforward assumption: the stop-loss is the exit. That assumption is built on years of trading in a system where it holds. In crypto perpetual futures, it does not.
The Numbers Behind the Risk
Leverage.Trading’s analysis of crypto futures liquidation systems found that the mark price, not the price displayed on the chart, determines when a position closes. The firm laid out a direct scenario.
A trader goes long on Bitcoin at $110k using 10x leverage and places a stop-loss at $100k, a level just above the liquidation threshold near $99k. In a fast drop, the mark price falls to $99k. The position gets liquidated.
Meanwhile, the last traded price on Coinbase is near $100k. The stop-loss never fires. A difference of roughly 1% between the two prices is enough to decide which trigger reaches the trade first.
Kraken’s futures documentation supports this. It notes that a mark price can reach the liquidation level before a preset stop-loss activates.
Real-world data reinforces it further. Decrypt reported that an October 2025 crash wiped out approximately $19 billion and liquidated more than 1.6 million traders in a single event.
CoinGlass data cited in that report described it as the largest liquidation event in crypto history.
Anton Palovaara, market structure analyst at Leverage.Trading, put it directly.
“A trader can do everything their brokerage taught them, set the stop-loss, size the position, watch the chart, and still get closed out first,” Palovaara said.
“The liquidation watches one price, and your stop-loss watches another. In a fast drop, the one you are not watching wins.”
The CFTC made Coinbase perps legal. It did not change which price closes the trade.
