Trading Psychology: FOMO, Revenge Trading and Overconfidence
Reviewed by Leon Moyer - Published October 9, 2026 - Last reviewed October 9, 2026
In this lesson
Recognize FOMO, revenge trading and overconfidence in your own trading, and name a rule that guards against each.
Trading psychology is the way emotions such as fear, greed, regret and pride change your trading decisions, sometimes by pushing you to break rules you set when you were calm.
The previous two lessons gave you rules: a position size and a written plan. This lesson is about the moments you will be tempted to ignore them. Options make those moments sharper, because leverage makes both gains and losses arrive quickly.
What is trading psychology, and why does it matter?
Some costly trading mistakes come from breaking a rule you already knew. Others come from gaps in knowledge or a flawed plan. You knew your loss exit, and you moved it. You knew your size, and you doubled it. You knew the setup was weak, and you took it anyway because you were bored.
Three traps to watch for are fear of missing out, revenge trading, and overconfidence. Each one feels reasonable in the moment, which is why each one needs a rule written in advance.
What is FOMO in trading?
FOMO, the fear of missing out, is the urge to jump into a trade because the price is already moving fast. A stock is up 8% this morning, everyone is talking about it, and buying calls feels like the only way not to be left behind. The SEC warns that social-media-driven short-term trades can lead to impulsive decisions and substantial risk, including for options.
FOMO trades tend to share three flaws:
- You enter late, after much of the move has happened.
- You pay more. A rally raises call prices, all else equal, because the calls are closer to (or deeper in) the money. If heavy demand also lifts implied volatility, premiums rise further, as the OIC explains under vega. Implied volatility does not always rise in a rally, though; it can fall. The What Is Implied Volatility? lesson covers why.
- The trade skips your plan. No entry criteria, no planned exits, and often no sizing.
The guard: your written entry criteria. If a trade does not meet them, it is not your trade, however exciting it looks. There will always be another move.
What is revenge trading?
Revenge trading is placing a new trade, usually bigger or faster than normal, to win back a loss you just took. The goal quietly changes from "trade my plan" to "get even," and the market has no idea you want your money back.
Worked example
The same losing week, two ways
For this illustration, you trade a $10,000 account with a fixed $200 risk budget per trade (2% of starting equity), before fees. On Monday your first trade loses the full $200.
Path A: follow the plan. Your next trade is the normal size. It also loses $200. You are down $400, which hits the plan's weekly loss limit of 4%, so you stop and review.
- Account: $10,000 - $400 = $9,600, down 4%.
Path B: revenge trade. Angry about Monday, you double up to win it back: two contracts, $400 at risk. That loses too. Now you need $600 back, so you go to four contracts, $800 at risk, on a rushed setup. It loses.
- Losses: $200 + $400 + $800 = $1,400.
- Account: $10,000 - $1,400 = $8,600, down 14%.
Same market, same first loss. Path B lost three and a half times as much, and now needs a gain of about 16% ($1,400 / $8,600) just to get back to even.
Illustrative and hypothetical. The ticker and prices are invented for teaching, and the figures exclude commissions, fees, margin interest and taxes, which reduce real results. Past or hypothetical outcomes do not indicate future results.
The same losing week, with and without revenge trading
Account at the end of the week
Drawdown
The guard: a loss limit that makes you stop, and a rule that size never goes up after a loss. Consider also taking a break for the rest of the day after any loss that stings.
The revenge-trading loop
A loss
An ordinary, planned-size loss
Urge to get even
The goal becomes winning it back
Bigger, rushed trade
Size up, setup skipped
Bigger loss
Now there is more to win back
Why is overconfidence after a winning streak dangerous?
Winning streaks are when careful traders get careless. After a few wins it is easy to believe you have figured the market out, and the natural next step is to trade bigger.
Here is the arithmetic. Three trades in a row each make $100 on one contract, +$300 in total. Feeling sure of yourself, you buy three contracts on the next trade, $600 at risk. It expires worthless. One loss has erased all three wins and left you $300 behind.
A few wins in a row prove very little. Short streaks, good and bad, happen by chance, and a sample of three trades cannot tell skill from luck. That is why your size should come from your account and your risk rule, not from how the last trade went.
The guard: size from the rule, every time. If you want to trade bigger, change the plan during a scheduled review, after many trades, not after a hot week.
Is options trading gambling?
It can be, depending on how you do it. Buying cheap, short-dated options on a hunch, with no plan and no size limit, behaves a lot like buying lottery tickets: you can lose the entire premium, and an occasional big win can encourage taking more risk.
Trading with a written plan looks different. You know the most each trade can lose before you place it, you size every trade so that loss is small, you use options for a stated purpose (as Why Traders Use Options described), and you review your results honestly. None of that guarantees a profit. A plan makes decisions easier to examine, but following it does not establish a profitable edge or eliminate chance.
How do you control emotions when trading?
You will not stop feeling fear or greed. The goal is to make sure those feelings cannot reach the order button without passing through a rule first. A FINRA investor article on active and passive investing notes that FOMO, panic and other emotional reactions can cause investors to abandon sound investment principles; the checklist below is a way to pause before acting, not a guarantee against losses.
- Decide before you trade: entry, exits and size, in writing.
- Set a stopping rule: a daily or weekly loss limit, and a break after any big loss or big win.
- Never raise size after a loss, and raise it after wins only during a review.
- Write down how you felt when you entered and exited each trade. Over a few weeks, patterns appear that you could not see one trade at a time.
Turn the stopping rule into an action you can follow. In the hypothetical $10,000 plan above: if a second $200 loss brings the week's losses to $400, then stop opening trades, review existing exposure, and write down what happened before the next session. A pause does not erase a loss, but it gives you a chance to check the plan before risking more.
Check your understanding
A stock has jumped 10% this morning and you feel you must buy calls now. Which trap is this, and what is the guard against it?
Show answer
FOMO, the fear of missing out. The guard is your written entry criteria: if the trade does not meet them, you do not take it, however fast the stock is moving.
In the revenge-trading example, why did Path B lose $1,400 while Path A lost $400?
Show answer
Because Path B raised the size after each loss, risking $400 and then $800 to win back earlier losses, while Path A kept every trade at the planned $200 and stopped at its loss limit.
Why do three wins in a row not justify tripling your size?
Show answer
Three trades are far too few to tell skill from luck, and a bigger size multiplies the next loss. In the example, one loss at triple size wiped out all three wins and left the trader $300 behind.
Key takeaways
- Emotional pressure can lead you to break your rules; knowledge gaps and flawed rules also cause losses.
- FOMO leads to late, expensive entries outside your plan; your entry criteria are the guard.
- Revenge trading raises size after losses; a loss limit and a no-bigger-after-a-loss rule stop it.
- Overconfidence raises size after wins; size should come from your risk rule, not your last result.
Common questions
What is FOMO in trading?
FOMO, the fear of missing out, is the urge to jump into a trade because a price is already moving fast and you do not want to miss the rest of the move. It usually means entering late, at a worse price, without the trade meeting your plan.
What is revenge trading?
Revenge trading is placing a new trade, often a larger or rushed one, to win back a loss you just took. It replaces your plan with a need to get even, which tends to turn one ordinary loss into several bigger ones.
How do you control emotions when trading?
Make the decisions before the trade: write your entry, exit and size rules in a plan, set a loss limit that makes you stop, take a break after a big loss or win, and note how you felt in your journal so you can spot patterns.
How do I stop overtrading?
Limit how many trades you can have open and how many you can place in a day or week, require every trade to meet your written entry criteria, and review your journal for trades you took out of boredom or frustration.