screenmytrade

Learn · What’s the risk? · 8 of 11

Stop distance and daily noise

A stop that sits too close gets hit by ordinary noise, not a real breakdown — and how close is "too close" depends on the stock. Place a stop on real charts and see how many normal sessions would have tripped it.

You can read whether a move is real. Now the risk side: if it goes wrong, how far below price does an exit belong?

A stop-loss is the price where a trader plans to step out if a trade goes against them. Its job is to be reached by a real breakdown, not by ordinary wiggle. So the question that matters is how far below price it sits.

A fixed percentage is not a fixed level of safety. A 2% stop clears a calm stock that drifts a point a day — but on a stock that swings 4% before lunch, that same 2% gets clipped constantly by normal movement. The right distance depends on how much this stock moves.

Place one yourself: the real 3-month charts below are daily high–low bars — taller bars, jumpier stock. Read the noise, drag the stop to a distance a normal day won't reach, and commit. The reveal lights up every session it would have tripped.

Chart 1 of 4
last2%

MSFT · Jul 2 – Oct 1, 2025

Drag the stop to a level a normal day won't trip — but no wider than it needs.2.0%

Set the stop to the stock, not to a habit. Too tight and daily noise clips it before any real breakdown; too wide and every extra percent is risk per share for nothing. The sweet spot rides just past the daily range — which is why the jumpy charts needed far more room than the calm one.

The read is descriptive, not prescriptive — it counts how many past sessions' dips would have reached a given level. A busier stock simply needs a wider stop to clear the same ordinary noise.

Check your reading

A 2% stop clears a calm stock's daily noise. Put the same 2% stop on a stock that swings 4% a day — what happens?

This is one of the Ten Checks — screenmytrade tracks it daily across the S&P 500. The exact rule is in the methodology.