Take Profit and Stop Loss on MyFundedPerps: Trigger Sources by Venue

A stop loss is only as good as the price that triggers it, and on MyFundedPerps that trigger price depends on which venue feeds your market. Traders searching for how the MyFundedPerps stop loss works usually find the ticket controls quickly but miss the part that matters most under stress: the trigger source, the execution reality after the trigger, and the fact that no stop overrides the account's loss floors. This article puts all three in one place, with the exact mechanics from the docs.

Trigger sources by venue

New stop loss orders follow the market's chart source:

A few important qualifications from the challenges and rules documentation:

• Existing orders keep their original trigger policy until they are cancelled and replaced. If you placed stops under an older policy, cancel and re-place them to get the current behavior.
• The trigger source choice does not change the price references used for loss-limit or liquidation checks. Those are separate systems with their own references.
• For Lighter forex positions, unrealized profit or loss and the related loss and liquidation checks use Lighter's mark price, which matches the chart candles. The midpoint between best bid and ask is a separate order-book value.

Why does the trigger source matter? Last Price moves with every trade print, including wicks. Mark Price is a fair-value reference designed to smooth out prints. On a Binance-sourced crypto perp, a thin wick can trigger your stop even if the broader market never traded there. On Lighter forex, your stop and your P/L checks share the same mark-price reference, which makes behavior more predictable but not guaranteed.

What happens after the trigger

The docs describe two behaviors every trader should internalize.

A detected crossing stays valid. If price crosses your stop and then moves back before execution, the detected crossing remains valid. The exit still needs a fresh execution price, so the fill happens at whatever the market offers when the order executes, not at your stop price and not at the reverted price.

A stop is not a guaranteed fill. Slippage applies to stop-triggered market exits exactly as it does to any market order. Market orders fill at the top of book, forex at mark price, and slippage always goes against the order, capped by tiered ceilings (0.25 bps up to $100K on majors like SP500, NAS100, and GOLD, rising with size and falling liquidity; as of launch day, September 2026, figures may have changed since). In a fast market your exit can be worse than the stop price by the full cap, or worse than you modeled if you assumed the stop price itself.

The floor always beats the stop

This is the interaction that fails accounts. MyFundedPerps loss rules use equity, including open-position profit or loss. The daily loss limit is 3% of starting balance measured from start-of-day equity, and the static max loss floor is starting balance minus the plan allowance (3% Select, 5% Prime, 6% Signature). Placing a stop does not guarantee a fill before a loss-limit breach, and the docs say so explicitly.

Work the math before the trade. On a $100K account the daily allowance is $3,000. If your position is large enough that the distance from entry to stop represents more than $3,000 (minus fees and any earlier losses that day), the daily floor can breach before your stop fills. A confirmed breach fails the account, closes positions, and cancels outstanding orders, including the stop you were relying on.

Loss-limit monitoring also never sleeps. It continues while the account is active, including after trades settle and after hourly swap fees charge. Swap fees (0.03% per day on crypto, charged hourly on the UTC boundary to both longs and shorts) debit the balance directly, quietly moving equity closer to the floor while your stop sits unchanged. Re-check headroom on positions you hold for days, not just at entry.

Take profit mechanics

Take profit orders mirror the stop logic on the exit side: attached to the position, trigger-based, executed as fresh orders once the trigger fires. The same practical points apply:

• A take profit converts open profit to realized balance only when it fills. The profit target on evaluations is measured on realized balance, so open profit alone cannot pass the challenge.
• Market-style triggered exits take slippage; limit-style exits risk not filling if the market touches and reverses.
• Commissions apply to the exit fill (0.03% per fill on crypto, entry and exit), so the net you bank is the fill price minus fees.

Practical checklist before every position

1. Identify the market's source venue on the markets page, and note whether your stop triggers on Last Price or Mark Price.
2. Size the position so a full stop-out, including slippage at the cap and round-trip commission, fits inside your remaining daily allowance with room to spare.
3. Remember open P/L counts. Two positions can each be "safe" alone and breach the floor together.
4. Re-place old stops if you want the current trigger policy.
5. On funded accounts, respect the news windows: no new exposure from 10 minutes before to 2 minutes after a red-folder event, and no manual trades from 2 minutes before to 2 minutes after. Plan exits before those windows open.

For the surrounding rules, read myfundedperps-rules-explained, myfundedperps-static-drawdown, and myfundedperps-news-trading-rules.

Frequently asked questions

Which price triggers my MyFundedPerps stop loss?

For new orders, Last Price on Binance, Bybit, and Hyperliquid markets, and Mark Price on Lighter markets. Older orders keep their original trigger policy until cancelled and replaced.

Does the trigger source affect liquidation or loss-limit checks?

No. The stop trigger source is an order-routing detail. Loss-limit and liquidation checks use their own price references; on Lighter forex those checks use Lighter's mark price, matching the chart candles.

Can my stop fill worse than my stop price?

Yes. A triggered stop still needs a fresh execution price, and slippage always goes against the order up to a tiered cap. A detected crossing also remains valid if price moves back before execution.

Will a stop loss protect me from breaching the daily loss limit?

Not reliably. Loss rules measure equity including open P/L, and a confirmed breach stops trading and cancels orders. If the dollar distance to your stop exceeds your remaining daily allowance, the floor can fail the account first.

Do take profit fills count toward the profit target?

Yes, once realized. The profit target (9% Select, 12% Prime, 10% Signature, on starting balance) uses realized balance, so the position must actually close at a profit for it to count.