Yes. Every pair has a maximum order size, and three things together determine how large a position you can open: your available margin, the leverage you are using, and Bybit's maximum market order size for that pair.
The hard cap per pair
Position sizes are capped at Bybit's official maximum market order quantity for each pair. This is enforced when you submit the order. An order above that limit is rejected outright rather than partially filled.
The cap differs from pair to pair. Deep, liquid pairs allow far larger orders than thin altcoin pairs. The maximum position size for the pair you are trading is shown in the order confirmation panel before you execute, next to the slippage fee.
Your margin and leverage
Within that cap, your own limit is your available margin multiplied by the leverage you select. Available margin is the part of your equity not already committed to open positions.
Leverage is yours to set on CPX, the same way it works on an exchange. You can choose anything from 1x up to the maximum allowed for that pair: 5x on BTC, ETH and SOL, and 2x on altcoins, commodities and stocks.
Example on a $10,000 Advanced account using full available margin:
- BTC, ETH or SOL at 5x: up to $50,000 notional
- Altcoins, commodities and stocks at 2x: up to $20,000 notional
Whichever is lower, your margin-and-leverage ceiling or the pair's order size cap, is the one that applies.
Size and your drawdown limits
Nothing stops you committing your full available margin to one position, but a position that size leaves no buffer against your Daily Loss Limit or Max Loss Limit. Both are equity-based, so an open position moving against you can breach the account before you close it.
Larger positions also carry a larger slippage fee, since the fee is sized from how much of the order book your order would have taken.
Size and qualifying trading days
For a day to qualify toward a payout cycle, the margin committed to the position must be at least 5% of your initial account balance. That threshold is measured on margin, the collateral you actually put up, not on notional value after leverage. See What counts as a qualifying trading day?
FAQ
Is there a maximum order size per trade? Yes. Each pair is capped at Bybit's maximum market order quantity, enforced at submission. The limit for your pair is shown in the order confirmation panel.
What happens if my order is above the limit? It is rejected at submission. It is not partially filled and no position is opened. Reduce the size and submit again, or split the entry across smaller orders.
Is the cap the same on every pair? No. It follows Bybit's limit for each pair, so liquid majors allow much larger orders than thin altcoin pairs.
Can I use my full balance as margin on a single trade? Yes, within the pair's order size cap. There is no rule against it, but it leaves no buffer against your drawdown limits and risk management is your responsibility.
Can I choose my own leverage? Yes. Leverage is adjustable in CPX from 1x up to the maximum for that pair, the same as on an exchange. See Adjusting Leverage.
Does the size limit differ between evaluation and funded accounts? No. The same pair caps and the same leverage limits apply in both phases.
Does position size affect whether a trading day qualifies? Yes. The margin committed must be at least 5% of your initial account balance. Note this is measured on margin, not on notional value after leverage.
