The biases that drain accounts
Confirmation bias
4 min
Confirmation bias is the tendency to seek, notice and believe information that supports what you already think, while ignoring or explaining away anything that contradicts it.
The market example
You buy a stock because you are convinced it will rise. From that moment, your reading of the news changes. Every bullish article feels insightful and gets shared; every bearish one is "noise" written by people who "don't understand the story." You follow analysts who agree with you and mute the ones who don't. The position feels safer and safer even as the warning signs accumulate — because you have stopped letting yourself see them.
Confirmation bias is especially corrosive because it operates invisibly. You feel like you are doing research, but you are really assembling a case for a verdict you already reached.
Why it is so dangerous in markets
The market is the ultimate source of disconfirming evidence — the price itself is telling you whether you are right. A confirmation-biased trader filters out the one signal that matters most: that the trade is not working.
How to counter it
- Actively seek the bear case (or bull case, if short). Before entering, write the strongest argument against your own position. If you can't, you don't understand it well enough.
- Define your invalidation point in advance: "I am wrong if price does X" or "if this level breaks." This converts a vague feeling into an objective trigger.
- Follow voices you disagree with, not just ones that comfort you.
- Let price be the referee. If your thesis says up and the chart says down, the chart is the evidence, not the noise.
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