MFE (Maximum Favorable Excursion)
The highest unrealized profit a trade reaches between entry and exit — the best the position ever looked on paper.
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Explained Simply
Maximum Favorable Excursion (MFE) measures how far a trade moved in your favor before you exited. If you buy at $100, the stock rises to $115 (MFE = $15 / 15%), then you sell at $112 — your MFE was $15 but you captured only $12. MFE is a diagnostic for exit quality. Comparing MFE to actual exit profit reveals how much of the move you captured (capture ratio). A systematic gap between MFE and exit price suggests your exits are too early — you're leaving money on the table. Conversely, if MFE is consistently much higher than your exit, you may need tighter trailing stops to lock in more of the move before it reverses.
MFE vs MAE: Two Sides of the Same Coin
MFE and MAE (Maximum Adverse Excursion) together paint a complete picture of trade quality. MFE answers "how good did it get?" while MAE answers "how bad did it get?" Plotting MFE vs. final P&L reveals how much of the favorable move you retained. Plotting MAE vs. final P&L shows how much heat your winners had to absorb. Trades with high MAE that still end up winners are risky — the position was underwater before recovering, and the next one might not.
How to Use MFE (Maximum Favorable Excursion)
- 1
Track MFE for Every Trade
For each trade, record the maximum unrealized profit before the trade was closed. If you bought at $50 and the stock reached $54 before you sold at $52, your MFE is $4 per share. Track this in your trade journal alongside the actual P&L.
- 2
Analyze MFE Distribution
After 50+ trades, plot MFE vs actual profit. If most trades show MFE of $3+ but your average profit is only $1, you're exiting too early — your profit-taking strategy is leaving money on the table.
- 3
Optimize Take-Profit Levels Using MFE
If 80% of your winning trades reach 2R MFE, set your first profit target at 2R (you'll capture this level most of the time). If only 30% reach 3R, a 3R target would miss the majority of your winners. MFE data tells you the optimal exit point for your specific strategy.
Frequently Asked Questions
What is MFE in trading?
MFE (Maximum Favorable Excursion) is the highest unrealized profit a trade reached at any point between entry and exit. If you buy a stock at $50 and it rises to $58 before you sell at $55, your MFE was $8 (16%) even though your realized profit was $5 (10%). MFE tells you the maximum the trade offered — the gap between MFE and your actual exit reveals how much you left on the table.
How is MFE used to improve exit timing?
By analyzing MFE distributions across many trades of the same setup type, you can identify where the natural peak of a setup typically occurs. If 70% of your momentum breakout trades peak within 2–3R of MFE before reversing, a trailing stop calibrated to capture 2R of that range will exit before the common reversal zone. MFE analysis replaces arbitrary target placement with empirical targets derived from your own trade history.
What is a good MFE capture rate?
MFE capture rate — actual exit profit divided by MFE — of 60–75% is a realistic target for momentum day trades. Capturing above 80% consistently often means trailing stops are too tight and may be triggering premature exits on minor pullbacks. Below 50% capture suggests either exiting too early (before the move completes) or allowing a large retracement before closing — both are correctable with better trailing stop calibration.
Does MFE include unrealized gains that were never captured?
Yes — MFE records the maximum unrealized profit regardless of whether it was ever locked in. If your trade showed $10 per share of paper profit at peak and you exited at $3 per share, your MFE was $10 and your capture ratio was 30%. This is precisely the diagnostic value of MFE: it makes visible the profit that existed but was not realized, forcing an honest accounting of exit quality rather than focusing only on what was captured.
How Tradewink Uses MFE (Maximum Favorable Excursion)
Every Tradewink position tracks MFE in real-time on every tick. The data is stored per-trade in the trade journal and fed into the DynamicExitEngine's ML model — which uses MFE patterns to calibrate optimal trailing stop distances. Post-trade reflections from the AI compare MFE to actual captured profit and generate lessons about exit timing for each ticker and strategy.
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See MFE (Maximum Favorable Excursion) in real trade signals
Tradewink uses mfe (maximum favorable excursion) as part of its AI signal pipeline. Get daily trade ideas with full analysis — free to start.