Why Spreads Hurt Tight Stops More Than You Think

[Fairman]

Why Spreads Hurt Tight Stops More Than You Think

A 1.5-pip spread seems small. Applied to a short-term trade with a tight stop, it consumes a significant part of the risk budget.

Consider a 10-pip stop. A long trade enters at the ask and exits on a stop at the bid. If the spread is 1.5 pips, price only needs to move 8.5 pips against your entry on the chart before the stop is triggered, because the chart often shows the bid. Your effective stop is closer than it looks.

On the profit side, a 15-pip target on a long needs the bid to rise about 16.5 pips from the original ask. You must be right by more to profit by the same amount.

The risk-to-reward ratio changes too. A nominal 10-pip stop and 15-pip target looks like 1 to 1.5. After a 1.5-pip spread on both sides, the ratio is closer to 10 to 15 plus costs, effectively around 1 to 1.3 depending on how you account for it.

This is why scalpers focus on pairs with the tightest spreads and avoid periods when spreads widen. It is also why very tight stops are fragile.

Percentages matter more than pips. A 1.5-pip cost is 15 percent of a 10-pip risk but only 3 percent of a 50-pip risk.

Practical step: for your typical stop and target, compute the spread as a percentage of each and see how much it changes your actual ratio.

[LondonNewsTrader]

The "percentages matter more than pips" line is the useful one, and the picture changes again around releases. That 1.5 pips is a typical quiet-hours figure; in the minute after a high-impact number many accounts briefly show 4 to 6 pips on the majors. On a 10-pip stop that's half the risk gone before price has done anything, and a long can be stopped by the spread widening alone, with no real move in the mid price.

If someone wants to keep tight stops, the honest fix is to log the spread at entry for every trade, then compare trades entered at normal spread with those entered when it was wide. Most platforms let you add a spread readout to the chart, so it costs nothing to capture.