Drawdown ≠ Stop Loss
A stop loss is a promise about the worst case. Drawdown is what actually happened. They are not the same number, and treating them as interchangeable is how accounts die quietly, right after a run of "wins."
What a stop loss actually is
A stop loss is an order. Placed before the fact, it defines the maximum you're willing to lose on a single position if the trade goes wrong. It's a rule about intent: "if price reaches here, I'm out, no further discussion." That's all it promises, and that's all it can promise. It says nothing about what happens to the trade before it either hits the stop or gets closed for a profit.
What drawdown actually is
Drawdown is a measurement, not a rule. It's the decline from a peak to a trough that has already happened, on an account, or on a single position. It's read backward, after the fact, off however the trade or the equity curve actually behaved. A tight stop loss says nothing about how deep the drawdown was on the way to the outcome, because the stop only fires if price gets there. Everything short of that line is drawdown that a stop loss was never designed to prevent.
Why SwingFish tracks "True Drawdown" instead
This is the exact reason SwingFish tracks and publishes "True Drawdown" as its own real-time measurement, not as an after-the-fact tally of closed losing trades. Summing up the losses that got booked only counts the positions that failed. It says nothing about the ones that floated deep red and recovered, which never show up in a "sum of losses" number at all. True Drawdown is captured continuously, off the account's actual floating equity as it happens, precisely so that heat taken and released without ever becoming a booked loss still counts. That's the whole point of measuring it in real time instead of reconstructing it from the trade log afterward.
The invisible risk: a "win" that was never a good trade
This is the part a win/loss ledger will never show you.
Two trades, identical result, wildly different risk
Trade A opens, floats to -0.3% at its worst point, then closes at +0.2%.
Trade B opens, floats to -3.0% at its worst point (nowhere near the stop), recovers, and also closes at +0.2%.
Every stat that only records outcomes, win rate, total P&L, the trade log, sees two identical wins. They are not remotely the same trade. Trade B carried ten times the drawdown to produce the exact same result. A stop loss that never triggers doesn't mean no risk was taken. It means the risk that was taken didn't turn into a booked loss this time.
Do that enough times and the pattern becomes the account's real risk profile, invisible to anyone reading the P&L, and eventually obvious to anyone reading the drawdown.
Why this matters when you're reading any performance chart
A rising equity line tells you the outcome. It cannot tell you the path. Two accounts can post the identical gain over the identical period, one built on tight, controlled exposure, the other built on positions that floated deep red and got lucky on the way back, and the line looks the same either way. The only way to tell them apart is to look at drawdown directly, not at whether a stop loss was configured, and not at whether it fired.