Who this is for — Readers who notice that their entry price, a past high, someone else's target, or the first number they saw keeps dominating a decision after new information arrives.
Anchoring is the tendency to let an initial reference influence a later estimate. The reference may be relevant, irrelevant, or even random: the goal is not to ignore it, but to test how much weight it deserves against the evidence available today.
In plain terms — “It used to trade at 100” proves neither that 60 is cheap nor that price must return to 100. That number is a starting point to test, not a forecast.
What it does — and does not do
| Sound reading | Reading to avoid |
|---|---|
| The first number may influence later judgment | The previous price is the “true value” |
| A decline may reflect new information, risk, or changed market conditions | A large decline automatically makes an asset cheap or doomed |
| Looking for features that differ from the anchor may reduce its influence | Removing the bias creates a reliable forecast |
The experimental study by Chapman and Johnson reports that prompting participants to consider features different from the anchor can reduce anchoring. It does not imply that any procedure can reveal a future price.
Operational check
- Name the anchor: entry price, high, target, valuation, or first forecast seen.
- Rebuild the thesis from scratch: which current facts would matter if you had never seen that number?
- Seek contrary evidence: data and scenarios that would make the anchor less relevant.
- State method and conditions: horizon, risk, sources, and invalidation criterion should be explicit.
- Make the decision separately: checking the bias improves the process; it does not compel a buy, sell, or hold decision.
Example — An asset trades at 60 after previously trading at 100. Instead of assuming a “return to 100,” the reader compares updated data, risks, liquidity, and alternative hypotheses. The conclusion may be favourable, unfavourable, or still uncertain.
Limit — Trend and price action describe observed price behaviour; by themselves they do not prove fundamental value, the cause of a move, or future direction. This entry is educational and is not a trading signal.
Sources
- CFA Institute Research Foundation, Risk Profiling and Tolerance: Insights for the Private Wealth Manager — places anchoring among the cognitive biases relevant to financial decisions and risk profiling.
- Chapman and Johnson, Anchoring, Activation, and the Construction of Values (PubMed) — experimental research on the influence of starting points and a possible debiasing mechanism.
- Investor.gov, Thinking About Investing in the Latest Hot Stock? — advises readers not to decide under pressure or solely from social-media information and to research the investment.
Links
- confirmation-bias — another bias that may select only evidence consistent with the thesis.
- trend — describe observed direction without turning it into certainty about the future.
- discipline-technical-analysis — technical tools, hypotheses, and reading limits.