How to stop trading after a loss

Why you want one more trade after a loss

After a red trade, the goal quietly changes from trading well to getting back to even. It feels like the next setup is a good one.

Researchers call this the break-even effect. In real-money experiments, people who had already lost found bets that offered a chance to break even especially attractive (Management Science, 1990). The same paper found that a prior gain also raised risk-taking, which it called the house money effect.

Professional futures traders do it too. A study used over 5 million trades by 1,082 Treasury bond futures traders at the Chicago Board of Trade in 1998. It focused on 426 local traders who traded their own accounts, and those who lost money in the morning placed more trades and larger trades in the afternoon (Journal of Finance, 2005). They had a 31.2% chance of taking above-average afternoon risk, against 27% for traders who were up.

Under both sits loss aversion. The classic estimate is that a loss weighs more than twice as much as a gain of the same size (Journal of Risk and Uncertainty, 1992). Later experiments found no loss aversion for losses of up to $20, and a smaller one, about 1.5 times, for $100 losses (Judgment and Decision Making, 2022). So treat "twice" as an estimate, not a law.

Decide the stop before the first trade

You need a stop rule most when your judgment is worst, so write it before the session starts.

A plan in the form "if this happens, then I will do that" is called an implementation intention. A meta-analysis found these if-then plans had a medium to large effect on reaching goals (Advances in Experimental Social Psychology, 2006). Write your stop the same way: if I take my second loss, then I flatten and close the platform.

Three losses is common advice, but it is a starting point, not a proven number. Pick the count that fits your plan while you're flat, write it down and don't renegotiate it mid-session.

Five stop rules to write before the session

1. Cap your trades. Write how many trades you'll take and how you count them. For example, count one entry and its exit as one trade. At the number you're done: green, red or mid-setup.

2. Count losses without resetting. Pick the number of losing trades that ends the day, for example 2, and don't reset it after a win. With a count of 2 that resets after a win, you can lose 1, win 1, lose 1, win 1, lose 1 and never trigger the rule.

3. Pause after every loss. Pick a fixed cool-off away from the screen, for example 15 minutes. It puts time between a loss and your next entry.

4. Set a dollar line inside the firm's limit. Put your own line well inside your firm's DLL, for example half of it, so a slipped stop or an open loser still has room before the firm's line. If your plan has no DLL, set the line well inside your max loss limit. Then check it against your max loss limit, whether it trails or not: one full day at your line should never be able to end the account.

5. Keep one size all session. Size is written down before the session and doesn't change until the next one. Sizing up to win it back is the same urge as the extra trade, with more contracts.

When a stop line is hit, flatten any open position and close the platform, not just the chart. If you can still see price, you can still find one more trade.

How prop firm loss limits work

Firm rules differ, so check your own firm's rules page for these patterns.

At some firms, hitting the daily loss limit flattens your positions and locks new trades until the next session without ending the account. At those firms, only the max loss limit ends the account. On some plans that limit trails: it rises as your balance makes new highs, at the end of the day or in real time, and never moves down. Some plans stop the trail at a set level.

Some firms watch your net P&L in real time, open trades included, so an open losing trade can touch the limit before you close it. That is why your own line should sit well inside the firm's.

Some plans have no firm daily loss limit, or make it optional. On those plans, only your own daily line stops a red day before it reaches the max loss limit.

Some platforms let you set a max trade count and a personal daily loss limit and lock them until the next trading day. If yours does, set the lock before the open.

How to check whether you kept the stop

A stop rule you never check turns into a suggestion. After the close, answer each line with yes or no.

Did I stop at my max trades? Did I stop at my loss count? Did I take the full pause after each loss? Did I stay inside my dollar line? Did my size stay the same?

Then count the trades you took after a stop line was hit. That count measures the habit whether or not those trades won, because a winner past the line still broke the rule.

Over a few weeks, look for which line breaks most, and when. If it's always the trade right after the second loss, you know where the stop fails.

How Psyke helps you keep the stop

Psyke is a trading psychology journal for prop firm futures traders. You write your rules in your own words, including max trades, then log each session after the close in about two minutes, each trade against each rule. You can also import your trading platform's CSV export.

Each session can name up to two habits from your answers, such as the revenge trade after a loss or sizing up to win it back. On the Core plan, once you have five marked trades and one rule broken three times, Psyke names the rule you break most. With more breaks, it shows when you break it, such as after a loss, and what it costs you in dollars from the amounts you logged.

Psyke does not connect to your broker and never says what to trade or how big. It is the check after the close.

Write your stop rules in Psyke and check them after every session. The free plan needs no card.

Not financial advice. Futures trading carries substantial risk of loss.