Run a Pre-Trade Checklist Even When It Feels Beneath You

Wrong ticker. An extra zero on the quantity. Earnings tomorrow morning, forgotten. The stop you meant to place, never placed. A spread three times wider than you would normally pay. A position twice the size your rules allow, because the chart looked so good.

Those are the mistakes that do the real damage in a trading account, and not one of them requires a lack of skill. They require a moment of inattention, which every trader has, and the only reliable defense against a moment of inattention is a routine that does not depend on paying attention to the thing you forgot.

Experience is the reason to use one

The usual objection is that checklists are for beginners. It has the logic backwards.

A beginner is slow and careful because everything is unfamiliar. An experienced trader is fast because the steps have become automatic, and automatic steps are exactly the ones that get skipped without anyone noticing, since the brain fills in “done” for any step it has done a thousand times before. Routine breeds skipped steps. The more trades you have entered, the more confident you are that you checked, and the less that confidence is worth.

The checks feel most pointless on your busiest days, when you are trading fast with several tickets open and the market moving, and those are precisely the days when the symbol from your last order is still sitting in the box and a share count meant for a different stock carries over to this one.

Consider what one skipped check can cost. Say you mean to buy 500 shares at 18.40 and type 5,000.

Whether your broker blocks that order depends on your buying power and its own size checks. Some will, some will not. Your checklist should not be relying on either.

The eight checks

Each one is here because it catches a specific, common, expensive error. Run them in order, on every entry, including the ones that feel obvious.

1. Thesis. Can you state the trade in one sentence, with the reason and the exit? If you cannot, you are not ready to enter, and the one-sentence trade thesis explains how to write it.
2. Ticker and side. Read the symbol back letter by letter, then confirm buy or sell. Similar tickers exist, and so do tickets that remember the side from your last order.
3. Quantity and dollar value. Look at the total order value, as well as the share count. An extra zero is invisible in a share count and obvious in a dollar figure.
4. Order type, price and time in force. Check that a limit is a limit, that the price is the one you meant, and that the order lasts for the day or longer as intended. Platforms ship with defaults that may not match how you trade, which is why it pays to check your broker’s default settings once and then confirm them here.
5. Scheduled events. Is there an earnings report, a company event or an index change before your planned exit? If so, you are holding through a possible gap, and a stop resting below the market can fill well under its price if the stock opens lower, so either size for that gap or plan to be out before the event.
6. Spread and liquidity. Look at the live bid and ask and the volume. If either is poor, the trade costs more than the chart shows, and how to tell if a stock is too illiquid to trade covers what to look for.
7. Stop at the broker. The exit order is entered and resting at the broker, at the right price, on the right ticker and for the right share count, since a stop attached to the wrong position protects nothing at all. A stop in your head does not count.
8. Risk in dollars. Shares times the distance to your stop is within your per-trade limit. Work it out with the trade risk worksheet if you are unsure.

That is the whole list. The first and the last take real thought, and both can be done before the open, when you write up the day’s watchlist and work out where each stop would go. The six in between are mechanical. They are a matter of reading what is already on the ticket, which makes them quick, and also makes them the ones experience tempts you to skip.

Keep it short enough to use

A checklist that takes five minutes will be skipped by the third day, and a skipped checklist catches nothing, so length is the thing to be ruthless about. Eight items is about the ceiling. Each should be a yes or no, answerable by looking at the ticket or the chart in front of you, without any analysis or opinion involved.

Resist adding items after every mistake. Add one only when it would have caught an error that actually cost you money, and take one out if it has never caught anything. Keep the list somewhere you see it at the moment of entry, since a checklist stored in a notes app you open once a month is decoration.

The one place to skip it

If a position is going badly wrong and you need out, get out. The checklist is for entries, where the cost of a pause is a missed trade, and a missed trade costs nothing. On an emergency exit, the pause is the cost.

Everywhere else, run it. Every time.