Building a Trading Plan

Why Plans Matter

Most traders have a strategy, a pattern they watch for, a setup they prefer. Very few have a plan. The difference is concrete specificity.

A strategy is “I trade breakouts.” A plan is: “I trade breakouts from consolidations of at least five days in high-volume stocks above $10. My entry is a limit order two cents above the resistance level. My stop is below the consolidation base. I risk 1% of my account per trade. I don’t trade the first 30 minutes of the session. I stop trading for the day if I’ve lost 2% of my account.”

The plan can be followed or violated. The strategy cannot, because “trading breakouts” has no defined edges. When things go wrong under a strategy, there’s no reference point to evaluate whether you followed your process or abandoned it. With a plan, you know exactly what happened.

Strategy vs. Plan

A strategy is a thesis about how the market works and where you have an edge. A plan is the operational document that specifies exactly how you’ll trade that strategy.

Every plan should answer:

• What will I trade? (specific instruments, liquidity requirements, price range)
• When will I trade? (time of day, days of the week, market conditions that disqualify a day)
• Why am I entering? (specific, observable criteria, not vibes)
• How much will I risk? (position sizing rules tied to account size)
• When will I exit? (stop level, profit target, or time-based exit)
• What will I avoid? (situations where the edge doesn’t apply)

Each of these deserves a specific answer, not a general philosophy.

Entry Criteria: Concrete, Not Vibes

Entry criteria are the most commonly vague part of a trading plan. “The stock looks strong” is not an entry criterion. “The stock is breaking above a five-day consolidation high on volume at least 1.5x the 20-day average” is an entry criterion.

The test: could you hand your entry criteria to a stranger and have them identify whether the setup is present? If not, the criteria are too vague.

Concrete entry criteria serve two purposes. First, they filter out marginal setups; if the stock “almost” meets the criteria, it doesn’t qualify. Second, they make your plan reviewable. After the fact, you can check whether you took trades that met your criteria or violated the rules.

Stop Loss Rules

Every plan needs a defined stop. The stop should be set before the trade is entered, at a technically meaningful level, and treated as non-negotiable.

“I’ll see how it trades” is not a stop. “I’ll exit if it drops $2” is arbitrary. “I’ll exit if it closes below the five-day consolidation low” is a stop tied to market structure.

Your plan should also specify whether you use hard stops (orders pre-placed in the market) or mental stops (alerts that prompt manual exits). Mental stops require more discipline: they give you the option to override, which is also a liability. Hard stops execute automatically but can get swept by normal intraday volatility before the position has a chance to work.

Some plans use both: a mental stop for intraday management and a hard stop set wide enough to avoid being swept, as a backstop against catastrophic movement while you’re not watching.

Profit Target Rules

Define in advance how you’ll exit winners. The options:

Fixed profit target: Exit when price reaches a specified level. Simple and clear. The risk is exiting too early in a strong trend, or missing the target by a fraction and watching the trade reverse.

Trailing stop: Let the stop move up as price moves in your favor. Captures trend moves without requiring you to predict the top. The risk is getting stopped out on normal volatility before the trend ends.

Time-based exit: Exit at end of day regardless of where you are. Common for day traders who don’t want overnight exposure.

Technical exit: Exit when price shows a specific reversal signal. More flexible but requires in-the-moment judgment, which means more room for rationalization.

Many plans use a combination: take partial profit at a fixed target, trail the remainder. Whatever you choose, specify it before the trade.

Position Sizing Rules

Position sizing should not be a decision made at the time of entry. It should be a formula.

The standard approach: determine your maximum dollar risk per trade (typically 1–2% of account), define your stop distance in dollars, and divide the former by the latter to get your share count.

Shares = Risk Amount ÷ (Entry − Stop)

A $20,000 account risking 1% per trade ($200) with a $1.50 stop: 200 ÷ 1.50 = 133 shares. That’s the position size, regardless of whether the stock feels “strong” or “obvious.”

Some plans also set a maximum position size as a percentage of account (e.g., no single position larger than 10% of account regardless of stop distance). This prevents a theoretically correct formula from producing a position that’s too concentrated.

Daily Loss Limits

A daily loss limit is the maximum you’ll lose in a single day before stopping trading entirely. This is one of the most important rules a plan can contain, and one of the most commonly omitted.

Without a daily loss limit, a bad morning can become a devastating day as you try to trade your way back to breakeven. Revenge trading requires being in the market. A daily loss limit removes that option.

A common starting point: 2–3% of account as the daily limit. When that threshold is hit, close all positions, close the platform, and stop. The market will be there tomorrow. Whatever emotional state is driving you to make it back today is not your ally.

Conditions for Skipping a Day

Knowing when not to trade is as important as knowing when to trade. Your plan should specify conditions that disqualify the day:

• Major economic releases before the open (CPI, FOMC decisions, jobs reports) that create unpredictable volatility
• Personal conditions: poor sleep, illness, significant personal stress
• Market conditions: news-driven gap or extreme pre-market move in your watchlist names
• You’ve already hit your daily loss limit

Skipping a day is not a failure of discipline. It’s discipline applied correctly, to recognizing when your edge doesn’t apply.

The Weekly Review

A trading plan without a review process is a static document. Markets change, your execution changes, and your understanding of your own edge evolves. A weekly review is how the plan stays current and useful.

Weekly review questions:

• Did I follow my entry criteria on every trade?
• Did I honor my stops, or did I hold past them?
• Did I exit at my targets, or did I deviate?
• What setups worked this week, and which didn’t?
• What would I do differently?

The review should be done with your journal in front of you, not from memory. Memory selectively discards the uncomfortable parts.

The Plan as a Contract

The value of a written plan is that it creates accountability to yourself. Spoken intentions are easy to modify in the moment. A written plan you consult before entering trades is harder to rationalize around.

Treat it as a contract. When you’re about to violate it, ask: why am I about to override the version of me who wrote this when I was calm and thinking clearly? The answer is almost always fear, greed, or ego, and none of those are good reasons.

Common Misconceptions

“I’ll build the plan as I learn more.” The time to build the plan is before you’re in losing trades trying to improvise. A rough plan followed consistently teaches you more than no plan at all.

“My plan needs to account for every situation.” Plans should cover your primary edge and the most common scenarios, not every edge case. Edge cases are handled by a default: when in doubt, don’t trade.

“I don’t need a written plan because I have it in my head.” The head plan is flexible in ways that undermine it. The version in your head at 9:45 AM after two losing trades is not the same plan you had in your head at 8 PM the night before.

Key Takeaways

• A plan specifies what, when, why, how much, and when to exit: with concrete answers, not general approaches.
• Entry criteria should be testable: could a stranger with your rules identify the setup? If not, they’re too vague.
• Stop levels and profit targets are decided before the trade, not during it.
• Position size is a formula, not a feeling: Risk Amount ÷ (Entry − Stop).
• A daily loss limit prevents bad days from becoming catastrophic ones; a weekly review keeps the plan honest and current.