In an exceptionally prolonged phase in the Bitcoin futures market, a rare funding dynamic has put short traders under significant stress. For more than 67 consecutive days, perpetual contract funding rates remained negative, culminating in three payouts per day and a total of 201 funding rounds. Despite the BTC price holding relatively steady, quiet but relentless margin losses mounted for short sellers, laying the groundwork for widespread liquidations as positions tightened beyond recovery.
67 days of negative funding pressure
In perpetual futures, funding fees are routinely exchanged between traders to align contract prices with the spot market. When rates are positive, long positions pay shorts; but with rates negative, the situation flips, and short sellers must pay. Recently, persistent negative funding in the BTC market forced shorts to see their margins shrink with every eight-hour cycle.
Although prices largely moved sideways, this unceasing negative funding led to substantial, creeping margin losses for short traders. According to live data from CryptoAppsy, a cascading wave of liquidations totaling around 590 million dollars in short positions occurred near the opening of European trading on May 18, as the pressure finally gave way.
Glossary: A perpetual futures contract is a derivative with no expiry, kept in sync with the spot price via periodic funding payments between market participants.
The real factors behind liquidation prices
A striking detail emerged during the wave of short liquidations: identical trades with the same size, entry price, and leverage were shut down at totally different price levels, solely depending on the trading venue. This discrepancy comes down to each exchange’s margin policies and how their liquidation engines function.
For instance, Binance requires a minimum margin of 0.5% for standard BTC perpetuals, which rises with larger trades. Other platforms have their own margin thresholds and different tiering. Even small margin differences can shift the liquidation price by thousands of dollars for high-leverage positions. Furthermore, exchanges differ in how liquidations execute: some partially close positions, letting traders retain the rest, while others liquidate the entire position at once.
| Exchange | Minimum Margin Rate | Liquidation Method |
|---|---|---|
| Binance | 0.5% | Partial |
| Bybit | 0.5% | Partial |
| OKX | 0.4% | Full |
| BitMEX | 0.5% | Full |
Differences in liquidation engines and funding caps
Platforms like Binance and Bybit feature “partial liquidation,” meaning when margin ratios fall too low, the system starts closing out small chunks of a position, permitting the trader to keep a portion if possible. Other exchanges, by contrast, immediately close out the full position on margin breach, a distinction that can determine whether a trader loses everything or manages to salvage some of their bet during fast price swings.
Additionally, funding rate cap policies vary. Some exchanges limit how high funding rates can climb with each eight-hour cycle, while others allow more significant rates, creating additional risk during sustained negative funding. In markets with high funding caps and low margins, losses for short positions escalate rapidly.
Experts caution: compare risk models, not just fees
Anton Palovaara, founder of Leverage.Trading, warns that while most traders grant the most weight to trading fees, liquidity, and withdrawal speeds when opening leveraged positions, the truly decisive factors are often overlooked.
“Before entering any leveraged trade, the three most crucial numbers are margin level for a position’s size, whether the exchange uses partial or full liquidation, and the funding cap. These critical details hide in the documentation, and few check them, yet they decide every trader’s fate.”
This recent 67-day stretch of negative funding made starkly clear why the same position can face entirely different outcomes on different platforms. With volatility possible at any time, experts emphasize that traders must select exchanges and risk management protocols with extreme care to protect their positions against such unpredictable swings.
