The Anatomy of a Trading Decision

A trading decision is more than choosing to buy or sell. You need to answer five questions. What is price doing? What needs to happen before you enter? Where will you admit the idea was wrong? Is the possible profit worth the risk? How large should the position be? If one answer is weak, the trade may not be worth taking.

We will follow one example from start to finish. The prices are only examples. They show how one choice affects the next choice.

Start With What the Chart Shows

A stock has been rising. Each high and each low is above the one before it. Price breaks above $50 resistance, reaches $55, and then falls back near $50. The old resistance may now act as support.

This is not enough reason to buy. Price could hold $50, fall through it, or move sideways. The trader waits for price to dip below $50 and then close above $51. This recovery would show that buyers have stepped in.

The lesson on reading a chart as a whole explains this order. “Price is rising near support” describes a possible trade. “Price dipped below support and closed back above $51” gives a clear reason to enter.

Choose the Entry, Stop, and Target

Price closes back above $51, so the planned entry is $51.20. The lowest price during the recovery was $49.40. A new move below that low would show that support failed. The stop goes at $49.30. The possible loss is $1.90 per share.

The next resistance is near $55.80. A target at $55.50 offers $4.30 per share. That is more than twice the possible loss of $1.90. The plan now has one simple idea: buyers hold the $50 area and price returns to the previous high. The lesson on stop loss and take profit explains why both exit prices need a reason from the chart.

What if the next resistance was $52 instead? The possible profit would be smaller than the possible loss. Do not invent a higher target. Do not move the stop closer just to improve the numbers. The chart idea may still make sense, but the trade does not.

Use the Risk to Choose the Size

Suppose the trader allows a maximum loss of $95 on one practice trade. The possible loss is $1.90 per share. Divide $95 by $1.90 to get 50 shares. First choose the stop. Then calculate a position size that fits the loss limit.

Starting with “I want 200 shares” causes a problem. With the same stop, 200 shares could lose $380. Moving the stop closer just to keep the large position is not a solution. Normal price movement may hit the stop even while the trade idea still makes sense. The lesson on position sizing covers the calculation; the key point is simple: choose the size last, not first.

Review the Decision, Not Just the Result

Imagine the trade hits the stop. The loss does not prove the decision was bad. The chart matched the plan. The trader waited for the planned entry, used a clear stop and target, and kept the position within the loss limit. A good decision can still lose.

Now imagine price reaches $55.50, but the trader bought early at $50.30. The trader did not wait for the planned close above $51. The trade made money, but the decision did not follow the plan. A winning trade can still come from a bad decision.

In ChartingPark, hide the future candles. Write down what the chart shows, what will make you enter, your stop, your target, and your size. Then move the chart forward. After the trade, note any time you broke the plan. Keep this separate from the profit or loss. This helps you see whether your decisions are improving.