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Process vs Outcome: Judging Your Trades by Decisions, Not Results

A single trade's result is mostly luck. Learn why judging trades by process leads to better long-term results, and how to measure your process in a journal.

By the TradeThink team3 min read

Process vs Outcome: Judging Your Trades by Decisions, Not Results

A trader breaks every rule, doubles his size, and makes $2,000. Another follows her plan perfectly and loses $300. Who made the better trade? The second one. In the short run, results are noisy. Over hundreds of trades, good decisions are what produce good results.

Why single outcomes mislead

Even a strong edge loses often. A strategy with a 55% win rate loses 45% of the time, and the order of wins and losses is random. Judging each trade by its result teaches the wrong lessons:

  • A lucky win rewards a bad habit, so you repeat it.
  • An unlucky loss punishes a good decision, so you abandon it.

Poker players call the habit of judging decisions by their outcomes "resulting". It is one of the most expensive errors in any game of chance and skill.

Many possible paths for the same strategy. The edge is the same in each; only luck differs.
Many possible paths for the same strategy. The edge is the same in each; only luck differs.

What a good process looks like

  • The trade matched a setup in your trading plan.
  • Entry, stop and size were planned in advance.
  • Risk was within your limits. See position sizing.
  • The exit followed your rules.
  • You recorded the trade and reviewed it.

If all of these are true, the trade was good, whatever the result.

Measure your process

You cannot improve what you do not measure. Track:

  • An execution rating for each trade, from one to five, based only on how well you followed the plan.
  • Whether you followed your plan each day.
  • Mistake tags for rule breaks.

Then look at the results grouped by these. Your highly rated trades should, over time, outperform the poorly rated ones. If they do not, the problem is the plan itself, not your execution, and that is just as valuable to know.

Outcomes still matter, in aggregate

Process does not mean ignoring results. Over a large sample, results tell you whether your edge is real. The point is the timescale: judge decisions trade by trade, judge the strategy over hundreds of trades. See sample size in trading statistics.

In TradeThink

Rate trades for execution from the trade menu, record whether you followed the plan in the daily journal, and compare results by rating in the reports. Related: trading discipline rules.

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