What is Anchoring Bias?
Anchoring bias overweights the first number encountered — purchase price, IPO, or morning high — in later decisions.
Formula
Classic Anchoring Example: Stock at $100 → Drops to $70 → "Cheap, it was just at $100!" Reality Check: - $100 was never "the correct" price - $70 isn't cheap because it's below $100 - Fair value depends on current fundamentals, not history The anchor ($100) has no predictive power but feels meaningful because you saw it first.
Indian market context (NSE)
Reference levels: Nifty 50 at 24,300, Reliance Industries at ₹1,300, Bank Nifty futures at 55,000 (lot size 30). Examples below show how Anchoring Bias shows up on Indian index, equity, and futures books — update to live quotes in your journal.
Nifty 50 perspective
Anchoring Bias often appears after Nifty moves 150+ points from open while you waited — journal “Nifty FOMO” entries separately from A-grade setups at 24,300 levels.
Reliance Industries perspective
Anchoring Bias on Reliance trades is common around results noise at ₹1,300 — rate discipline 1–5 in TradeLyser even when P&L is green.
Bank Nifty futures perspective
Anchoring Bias after Bank Nifty whipsaws 200 points around 55,000 triggers revenge sizing — enforce max daily loss before re-entering MIS.
How to validate
- Validate Anchoring Bias tags against time-stamps — impulse entries cluster after losses.
- Compare P&L on tagged vs untagged sessions over 20+ trading days.
- Use mentor review to confirm tag definitions stayed consistent.
- Do not validate solely on one exceptional week of discipline.
How to track in TradeLyser
- Add psychology grade and Anchoring Bias-related tag on each trade card.
- Use daily journal mood line when Anchoring Bias risk is elevated.
- Dashboard: count psychology violations per week alongside P&L.
- Share tag definitions with mentor before monthly review.
Best practices
- Separate process score from P&L when reviewing Anchoring Bias.
- Use cooldown timers after rule breaches involving Anchoring Bias.
- Sleep on size increases — never add risk the same day as a Anchoring Bias violation.
- Celebrate disciplined losses that followed the plan.
Common pitfalls
- Labelling trades after the fact to match desired self-image.
- Increasing size to fix a Anchoring Bias episode immediately.
- Confusing a green day with cured Anchoring Bias behaviour.
- Skipping tags on “small” impulsive trades.
How to use this in TradeLyser
Note if exit decision referenced entry vs live structure. Tag “anchored exit” when caught.
Related terms
Confirmation bias is seeking only evidence that supports an existing view while ignoring contradicting signals.
Loss aversion is the tendency to feel losses more strongly than gains, leading to holding losers or avoiding valid risk.
Support is a price area where demand previously stepped in, slowing or reversing declines. It is a zone — not a single tick — and can fail.
Volume Weighted Average Price averages traded price weighted by volume from session open. Many intraday desks use it as fair-value reference.
FAQ
What is an example of anchoring bias in trading?
You see a stock at $100. It drops to $80. Your brain anchors on $100, making $80 seem 'cheap' even though $80 might be expensive given new information. You buy, thinking you're getting a discount—when the fair value might now be $60.
How does anchoring affect trading decisions?
Anchoring makes you judge current prices relative to past prices rather than objectively. You might hold losing positions waiting for them to return to your entry price, or think a fallen stock is a bargain simply because it used to be higher.
What are common anchors in trading?
Common anchors include your entry price, recent highs or lows, round numbers ($50, $100), 52-week highs, analyst price targets, and prices mentioned in news. Any number you saw first can become an anchor affecting subsequent judgments.
How do you overcome anchoring bias?
Value assets based on current fundamentals and technicals, not historical prices. Ask: 'If I knew nothing about past prices, would I buy here?' Use intrinsic valuation methods. Actively seek information that challenges your initial anchor.
Is anchoring bias always bad in trading?
Usually yes, because past prices don't predict future prices. However, anchoring to your trading rules (not prices) can be helpful. Anchoring to risk limits like '1% per trade' creates beneficial discipline.
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