Bitcoin's $69,000 top in 2021 turned into a number everyone kept measuring against long after it stopped mattering. All through the bear market, traders compared everything to it. On the way back up, $69,000 became the line that decided whether the asset felt cheap or expensive, and the fundamentals at any given price took a back seat to the anchor. That is anchoring bias, and it runs quietly underneath most of the decisions people think they're making rationally.
The uncomfortable part is that it works below awareness. An analyst says a stock is worth $150, and your own valuation drifts toward $150 even when you sat down fully intending to build the number from scratch. There's a well-known set of experiments where people are shown a random number, then asked to estimate something completely unrelated, and their estimates get pulled toward the random number anyway. The anchor doesn't have to be correct, or even relevant, to move your judgment.
How it shows up when you trade
The most common version is purchase-price anchoring. You start evaluating a position against what you paid instead of what it's worth right now. Something you bought at $100 that's now at $50 feels like a loss even if $50 is a perfectly fair price today, and that feeling gets in the way of a clean decision about whether to hold, add, or sell.
A few others I see constantly:
- All-time-high anchoring. An asset traded much higher once, so people assume it'll get back there, without asking whether the conditions that produced that high still exist. The ATH becomes a target because of the pull of a number, not because of any analysis.
- Round-number anchoring. This is why prices cluster around, bounce off, or stall at levels ending in zero. $100, $1,000, $10,000, $50,000. None of them mean anything fundamentally, but limit orders, stops, and profit targets pile up there, and that concentration of orders creates real movement.
- Analyst-target anchoring. A prominent analyst puts a $200 target on a stock trading at $150, and the whole market starts reading price action relative to that number. Even the skeptics get caught, because they end up arguing against the target instead of doing their own valuation.
Getting the anchor out of your head
De-anchoring takes deliberate effort, it doesn't happen on its own. The technique I lean on most is to evaluate every position as if I held none of it. At today's price, with today's conditions, would I enter this trade right now? If the honest answer is no, the position probably needs trimming regardless of what I paid. That one reframe strips out the purchase-price anchor and forces you back onto current information.
The other thing that helps is working in ratios instead of absolute prices. Rather than asking whether Bitcoin is cheap at $45,000, which just re-anchors you to the $69,000 top, ask whether its market cap relative to on-chain activity, hash rate, and comparable assets looks attractive. Relative metrics are harder to anchor on because they don't have that clean, sticky quality a single price number has. It's not a cure, but it gives your brain something to hold onto besides the last big number it saw.