What is a trading strategy? How to build and test one

A trading strategy is a written set of rules that tells you exactly when to enter, where to put your stop, where to take profit and how much to risk. If two people can read your rules and take the same trade, it's a strategy. If it depends on "feeling" the market, it isn't one yet.

The five parts of every strategy

1. Market and timeframe: what you trade and when. Example: gold, 15-minute chart, London and New York sessions.
2. Setup: the conditions that must be true before you look for an entry. Example: price above the 50 EMA on the 1-hour chart (uptrend).
3. Entry trigger: the exact event that gets you in. Example: a pullback to the 50 EMA on the 15-minute chart followed by a bullish engulfing candle.
4. Exit rules: stop loss below the pullback low; take profit at 2R or the previous high, whichever comes first. (Stop loss, take profit)
5. Risk rules: 1% per trade, maximum two trades open, stop for the day after −2%. (Risk management)

Common strategy styles

None is "the best". Pick one that fits your schedule and personality: if you work 9–5, a strategy that needs you at the screen at 10:00 won't work.

How to know if it works

A strategy needs evidence, not a few lucky trades.

1. Backtest: go back on the chart and apply your rules to at least 50–100 past setups. Record each one honestly.
2. Forward-test on demo for a few weeks in real time.
3. Measure:
   • Win rate (% of trades that hit target)
   • Average win vs. average loss, in R
   • Expectancy = (Win rate × Avg win) − (Loss rate × Avg loss)

Example: 45% winners averaging +2R, 55% losers at −1R → (0.45 × 2) − (0.55 × 1) = +0.35R per trade. Positive expectancy means the rules make money on average over many trades, before costs. See win rate vs. reward-to-risk.

Why most beginner strategies fail

• Too many rules or indicators. Five indicators saying the same thing doesn't add information.
• Changing the rules after every loss. You never collect enough data to know what works.
• Ignoring costs. A scalping strategy that's +0.1R before spread can be negative after it.
• Good strategy, no discipline. The rules work only if you follow them every time.

Start simple

Write your strategy on one page using the five parts above, test it, keep a trading journal, and change one thing at a time. Our premium pre-trade plan template gives you a ready-made format, and the free cheat sheet covers position sizing: download it.