One bad position can wipe out your entire trading balance, not just itself—and until recently I didn’t even realize why. 😬
When I opened my first short on TradFi Perps, I didn’t even notice the “Isolated / Cross” switch—I left it at the default. Later I figured out what it means, and it turns out it’s not a small detail.
With Isolated margin, each position gets its own separate slice of the deposit: if it reaches liquidation, you lose exactly the amount you allocated to that specific position, and the rest of your balance isn’t touched. With Cross margin, all positions in the same underlying asset (for example, all USDT contracts) share a common pool of collateral—the system pulls funds from your entire balance to save the position. And if the losses are too large, multiple positions can be liquidated at once.
I also found a historical example: during the LUNA crash in 2022, it was Cross margin that caused some traders to lose their entire balance, while Isolated would have limited the loss to just one specific position.
Now, before every new short or long, the first thing I check isn’t the leverage size—it’s the default margin mode.
Have you ever checked what margin mode you have set as default, or did you just trust the default settings?
@Binance_Ukraine #tradefi