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’d normally pay, or 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 every one of them can happen to a skilled trader. All it takes is a moment of inattention, which everyone has, and the only reliable defense against a moment of inattention is a routine that doesn’t depend on you remembering the thing you forgot.

Experience is the reason to use one

The usual objection is that checklists are for beginners. That gets 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. So the more trades you’ve entered, the more confident you are that you checked, and the less that confidence is worth. Uncomfortable, but there it is.

The checks feel most pointless on your busiest days, when you’re 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 won’t. Your checklist shouldn’t be relying on either.

The eight checks

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

1. Start with the thesis. Can you state the trade in one sentence, with the reason and the exit? If you can’t, you’re not ready to enter, and the one-sentence trade thesis explains how to write it.
2. Read the ticker 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. 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. Check the order type, price and time in force: 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. Look for scheduled events. Is there an earnings report, a company event or an index change before your planned exit? If so, you’re 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. Check the spread and liquidity, meaning 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. Put the stop at the broker. The exit order is entered and resting there, 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. One in your head doesn’t count.
8. Finish with risk in dollars. Shares times the distance to your stop should sit within your per-trade limit. Work it out with the trade risk worksheet if you’re unsure.

That’s the 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’re a matter of reading what’s 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, with no analysis or opinion involved.

Resist adding items after every mistake (tempting as it is). 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 won’t be anywhere near you when it counts.

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 itself is what costs you.

Everywhere else, run it every time.