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This guide only applies to intraday trailing drawdown accounts (MFF Rapid, Bulenox, and similar). On EOD trailing accounts (TakeProfitTrader, Topstep), unrealized gains do not move your floor during the trade — so partial strategy is far simpler. If you’re on an EOD account, this page is informational but not critical.
Why partials matter differently on intraday accounts

On an intraday trailing account your floor moves in real time as your unrealized profit grows. The moment your trade reaches +$1,000 open profit, your floor has already moved up by $1,000 — whether you close the trade or not. If the trade then reverses to +$200 and you close it, you locked in $200 of actual profit but your floor moved $1,000. You permanently consumed $800 of your drawdown buffer to make $200.

This is the core mechanic that trips up traders coming from EOD accounts or live futures. The P&L number in your platform does not tell the whole story. The floor has already moved.

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The "let it run" instinct is backwards here. On a live account, letting a winner run has no mechanical downside. On an intraday trailing account, every tick higher your trade goes moves your floor up — and if the trade reverses before you close it, you ate buffer you can never get back. A $2,000 open winner that closes at $400 is not a $400 win. It is a $400 gain and a $1,600 buffer loss in the same trade.
The floor math

Start with a concrete account: MFF Rapid $50K. Starting balance $50,000, trailing drawdown $2,500, so starting floor = $47,500.

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How intraday trailing works: Your floor = (your highest ever account equity) − $2,500. Every time your equity reaches a new high — including unrealized open profit — the floor moves up. When you close a trade profitably, your account equity is now higher and the floor stays at that new level permanently.
The formula for each partial

For any partial exit on an intraday trailing account:

Floor movement from a partial = peak open profit reached before the partial
Your floor moves to (starting floor + peak unrealized), then stays there — closing the partial does not pull the floor back down. The floor only ever moves up, never down.

So if your trade peaks at +$1,500 before you take your first partial at +$1,200, your floor moved $1,500 — not $1,200. The $300 of peak that you didn’t capture still permanently moved your floor.

Dollar examples

Same starting scenario for all three: MFF $50K account, starting floor $47,500, drawdown $2,500. You enter 2 contracts on MNQ. Each contract is worth $500 per 10 ticks, so your full position = $1,000 per 10 ticks.

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Why these price levels? The examples use ICT-standard R-multiples. Risk (1R) = $500 — a typical 10-tick stop on 1 MNQ contract. Partials are taken at 1R (+$500), 2R (+$1,000), and the runner peaks at 4.4R (+$2,200) before reversing. These aren't random — they represent the most common scenario: a trade that looks like a winner at 2R, keeps going to 4R+, then gives most of it back. This is exactly the situation most intraday traders face when they decide to "let it run."
❌ Worst case — let it run, give it back
Trade peaks at +$2,200 (4.4R), you close at +$300
+$2,200 +$1,000 +$300 Entry Floor $49,700 Close +$300 Peak +$2,200 ← floor locked here Entry Buffer remaining: $600 of $2,500 — 76% consumed for a $300 gain
Trade opens. Floor: $47,500.
Trade reaches +$2,200 (new equity high: $52,200). Floor moves to $52,200 − $2,500 = $49,700.
Trade reverses. You close at +$300. Account balance: $50,300.
Buffer remaining: $50,300 − $49,700 = $600.
You made $300 but consumed $1,900 of buffer. You have $600 left before bust. One normal loss ends the account.
⚠ Better — one partial at 2R, then runner
Exit 1 contract at +$1,000, runner peaks at +$2,200, closes at +$300
+$2,200 +$1,000 +$300 Entry Floor $48,500 1 contract out +$1,000 → $500 locked Peak +$2,200 ← floor jumps again Runner +$300 → $150 Buffer remaining: $1,050 of $2,500 — partial helped but runner still cost floor
Trade reaches +$1,000 (2R). Exit 1 contract. Lock in $500 realized. Floor has moved to $48,500.
Remaining 1 contract peaks at +$1,100 more unrealized. Floor jumps to $48,500 + $1,100 = $49,600.
Runner closes at +$300 on 1 contract = +$150 realized. Total: $650.
Account: $50,650. Buffer: $50,650 − $49,600 = $1,050.
You made $650 and kept $1,050 buffer. Better — but the runner still moved the floor significantly. The first partial helped; the runner undid much of it.
✓ Best case — disciplined 1R + 2R exits, no runner
Exit 1 contract at +$800 (1.6R), exit 1 contract at +$1,400 (2.8R)
+$1,400 +$800 +$500 Entry Floor $48,300 Floor $49,000 1 contract out +$800 → $400 1 contract out +$1,400 → $700 Buffer remaining: $2,100 of $2,500 — made $1,100 and kept 84% of buffer intact
Trade reaches +$800 (1.6R). Exit 1 contract. Lock in $400. Floor: $47,500 + $800 = $48,300.
Remaining 1 contract reaches +$1,400 total (= +$600 more on 1 contract). Floor: $48,300 + $600 = $49,000.
Exit final contract at +$700 realized. Total realized: $400 + $700 = $1,100.
Account: $51,100. Buffer: $51,100 − $49,000 = $2,100.
You made $1,100 and kept $2,100 of your $2,500 buffer — 84% intact. The key: exiting the second contract at a clear target rather than letting it run. This is the model outcome.
Strategies compared

Seven exit strategies, modeled on a trade that reaches a peak of +$1,500 on a $50K MFF account (starting buffer $2,500, floor $47,500). All numbers assume a two-contract entry on MNQ where each contract = $500 per 10 ticks. With 2 contracts your only clean partial split is 1 contract at a time — 50% each. Strategies showing "50% at 1R" mean exit 1 contract at 1R and run the other to target.

Realized P&L vs Buffer Consumed — each strategy at a glance
$1,500 $1,200 $900 $600 $300 Hits target Gives back 50% 1R rest 2R 50% 1R runner 3R 50% 1R reverses 1c 1R 1c 2R Bracket fills Realized P&L Buffer consumed
Green = realized P&L · Red = buffer consumed. Taller green bars are better. Shorter red bars are better. Strategies 1 and 7 (bracket fills / hits target cleanly) are the only ones with zero buffer consumed — but they require the trade to reach your target without reversing first.

Strategy Exit sequence Realized P&L Floor moved Buffer used Rating
No partial — let it run Close all at peak $1,500 $1,500 $1,500 $0 Best if it hits target
No partial — give it back Close all at $300 after $1,500 peak $300 $1,500 $1,200 Account killer
50% at 1R, close rest at 2R Half out at $500, rest at $1,000 $750 $1,000 $250 Strong — low floor risk
50% at 1R, runner to 3R Half out at $500, rest at $1,500 peak $1,000 $1,500 $500 OK if runner hits target
50% at 1R, runner reverses to $200 Half at $500, runner closes at $200 $350 $1,500 $1,150 Painful — most common outcome
1 contract at 1R, 1 contract at 2R Exit 1 contract at $500, exit 1 contract at $1,000 $750 $1,000 $250 Clean — floor capped, full profit banked
Bracket to full target, no partials All in, bracket set at 3R target $1,500 $1,500 $0 Best outcome if bracket fills
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The bracket observation: If you set a hard bracket target and it fills, the floor movement is the same as letting it run — but the outcome is certain. The problem is when traders bracket, the trade runs toward target, they cancel the bracket "to let it run more," and it reverses. That decision turns a bracket strategy into a runner strategy with all the downside.
Partial exit floor calculator

Model your exact trade scenario. Enter your account details, the peak unrealized profit at each stage, and how much you closed at each partial. The calculator shows how much floor you consumed and how much buffer you have left.

Intraday Trailing — Partial Exit Floor CalculatorMFF · Bulenox · intraday accounts
Current buffer: $2,500  |  Current balance implied: $50,000
Partial exits (enter 0 if not used)
Partial Peak P&L before exit ($) Amount closed ($)
1st exit
2nd exit
3rd exit
Rules of thumb
1. Set your bracket before you enter

The cleanest outcome on an intraday trailing account is a hard bracket that fills at your target. No decision-making mid-trade, no "let me give it more room." If the bracket fills, your floor movement equals your realized gain — zero buffer consumed. Build your partial strategy around bracket targets, not manual exits.

2. Never cancel a bracket to let a winner run

This is the single most common account-killing decision on intraday trailing accounts. The trade is at +$1,400 approaching your +$1,500 bracket. You cancel it to "let it breathe." It reverses to +$200. Your floor already moved $1,400. You made $200 and consumed $1,200 of buffer. The bracket would have closed at $1,500 with $0 buffer consumed.

3. If you take partials, set the next bracket immediately

After your first partial closes, the runner has no exit plan and your decision-making is now emotional. Before the first partial fills, have the next target order already resting. This removes the "let it run vs. close it now" decision entirely.

4. The 80% rule for buffer preservation

A healthy intraday trailing account should consume no more than 20% of its drawdown buffer in a single profitable trade. On a $2,500 buffer that means floor movement of $500 maximum per session. If a trade requires more than $500 of floor movement to execute your strategy, either reduce position size or tighten your exit targets.

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Practical summary: On intraday trailing accounts, treat every partial strategy as a floor management decision first and a P&L decision second. The question is not "how much can I make?" — it is "how much floor am I willing to consume to capture this move?" Set that number before the trade starts, bracket to it, and don’t cancel.
Back to the full trailing drawdown guide
EOD vs intraday mechanics, firm-by-firm breakdown, and the safety net calculator.
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