i Short answer
Anchoring bias leads traders to fixate on an initial reference price, often their own entry point, distorting judgement about whether current price genuinely represents good value.
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1. The general anchoring bias concept explained
Anchoring bias is a well-documented general cognitive tendency to rely too heavily on an initial piece of information, the "anchor," when making subsequent judgements, even when this anchor has no genuine logical bearing on the actual decision at hand.
It's worth understanding this as a genuinely well-documented cognitive pattern that affects decision-making far beyond trading specifically, this same anchoring tendency shows up in negotiations, price perception generally, and countless other judgement contexts, worth recognising it as a fundamental feature of human cognition rather than a trading-specific quirk.
More retail traders fail from psychological errors than analytical ones. Rules that are clear on paper become difficult to follow when real money is at risk.
2. How this specifically manifests around entry price
In trading, this commonly manifests as fixating on your own entry price as a reference point for evaluating a position's current status, rather than objectively assessing whether the current price level genuinely represents a good entry or exit opportunity based purely on present, independent analysis.
See also: What Is the Gambler's Fallacy in Trading?
It's worth checking your own trading journal specifically for entries mentioning your original entry price as justification for holding, rather than your predetermined exit criteria, discussed elsewhere on this site regarding loss aversion, this pattern often overlaps with and reinforces the disposition effect discussed there.
- Emotional state is neutral
- Yesterday's results not influencing today
- Trading plan is open and reviewed
- Loss limit for today defined and accepted
- Phone notifications silenced
- Backup connectivity confirmed
- Written rules eliminate in-the-moment decisions
- Journalling creates a feedback loop for improvement
- Pre-session checks reduce emotionally-driven entries
- Regular breaks prevent compounding mistakes
- Building discipline requires active daily effort
- Losses immediately test emotional stability
- No external accountability in retail trading
- Social pressure to perform can override rules
3. Anchoring on previous highs and lows
Traders sometimes also anchor on a specific instrument's previous high or low price, treating this historical level as inherently significant for future decisions, even when current market conditions and analysis, might not genuinely support this specific historical level's continued relevance.
It's worth distinguishing this from the genuine, technically meaningful use of support and resistance levels, discussed elsewhere on this site, a level becomes an anchoring bias specifically when you're fixating on it emotionally rather than treating it as one input within broader, deliberate technical analysis.
4. Why the market doesn't care about your personal anchor
Evidence-based analysis generally, the market genuinely has no awareness of or regard for your specific entry price or any other personal reference point, price moves based on the aggregated decisions of countless other participants, entirely independent of your own particular anchor.
It's worth internalising this specifically because it's easy to intellectually understand while still emotionally struggling with it, repeating this principle to yourself explicitly during moments when a personal anchor feels emotionally significant helps interrupt the bias's influence on your actual decision.
5. The connection to other biases
As, anchoring on your entry price often compounds with these related biases, wanting to "at least break even" relative to your personal anchor, rather than objectively assessing whether holding or closing genuinely makes sense given current, independent analysis.
It's worth mapping out these connections for your own trading psychology awareness, recognising that these biases often reinforce each other rather than operating independently helps you address the underlying pattern more effectively than treating each specific bias as an entirely separate problem.
South African traders should approach this aspect of trading with the same systematic discipline they apply to their entry and exit rules. Maintaining written records, reviewing outcomes periodically, and adjusting approach based on evidence rather than gut feeling produces better long-term results than relying on informal methods. The structured approach that separates consistently profitable traders from the majority is not about exceptional market insight but about consistently applying a sound framework to every decision.
6. Practical techniques to counter this bias
Criteria-based decision-making generally, deliberately evaluating a position based purely on current technical or fundamental analysis, rather than your personal entry price, and using predetermined exit criteria set independently of this anchor, helps counter this bias's natural pull.
South African traders who approach their trading activity with the same rigour they would apply to any skilled professional discipline typically develop more durable results than those who treat trading as primarily intuitive. This means maintaining written records of every trade and its rationale, reviewing performance at regular intervals with specific metrics, and updating trading rules based on accumulated evidence rather than gut feeling. The structured approach separates traders who improve continuously from those who repeat the same errors across extended periods without identifying the underlying cause.
South African traders operate in a market environment that combines global exposure with unique domestic factors that most international trading frameworks do not address. The combination of FSCA regulatory oversight, SARB exchange control considerations, SARS tax treatment, load shedding operational risk, and rand-specific dynamics creates a trading environment that is both distinctive and analytically rich. Traders who develop expertise across both global trading fundamentals and SA-specific market dimensions build a more sound foundation than those who apply international frameworks without local adaptation. This local knowledge compounds over time, producing analytical advantages that persist across market cycles and that cannot be replicated by simply following international trading content produced without South Africa in mind.
South African traders operate in a market environment that combines global exposure with unique domestic factors that most international trading frameworks do not address. The combination of FSCA regulatory oversight, SARB exchange control considerations, SARS tax treatment, load shedding operational risk, and rand-specific dynamics creates a trading environment that is both distinctive and analytically rich. Traders who develop expertise across both global trading fundamentals and SA-specific market dimensions build a more sound foundation than those who apply international frameworks without local adaptation. This local knowledge compounds over time, producing analytical advantages that persist across market cycles and that cannot be replicated by simply following international trading content produced without South Africa in mind.
★ Why It Matters
Something worth testing on yourself directly: review a recent trade and ask whether your exit decision was driven by current technical conditions or by a desire to get back to your original entry price, the anchor to your entry price is often invisible until you deliberately look for its influence.
Anchoring bias causes traders to over-weigh a reference price, like a round number or their entry price. The market doesn't know or care where you entered, making entry price anchoring particularly harmful.
South African traders who approach their trading activity with the same rigour they would apply to any skilled professional discipline typically develop more durable results than those who treat trading as primarily intuitive. This means maintaining written records of every trade and its rationale, reviewing performance at regular intervals with specific metrics rather than general impressions, and updating trading rules based on evidence from actual performance rather than from theory alone. The structured approach separates traders who improve continuously from those who repeat the same errors across extended periods without identifying the underlying cause.
The difference between traders who improve systematically and those who plateau for extended periods is typically not natural talent or market insight but the quality of their record-keeping and review process. Traders who maintain a detailed journal, review every trade against their original rationale, and update their trading plan based on accumulated evidence rather than gut feeling develop a feedback loop that continuously improves their decision quality. This structured approach is available to every trader regardless of experience level and costs nothing except the discipline to apply it consistently.
Understanding how South African market conditions differ from the global trading environment covered in most textbooks gives local traders a genuine analytical edge. The JSE's resources weighting, the rand's dual sensitivity to global EM flows and domestic fundamentals, and the specific calendar of SA market events, SARB MPC dates, budget speeches, credit rating reviews, create a richer analytical environment than pure technical analysis alone captures. Building awareness of these SA-specific layers alongside standard trading principles produces more sound analysis for ZAR instruments and JSE-listed products.
✕ Common mistakes
- Fixating on your own entry price when deciding whether to exit. This anchor can distort judgement about whether current price genuinely represents good value.
- Not testing whether your exit decisions are driven by current conditions or your entry price. This specific check often reveals anchoring you weren't consciously aware of.
- Treating your entry price as inherently meaningful to the market. The market has no awareness of, or relationship to, your specific entry point.
- Anchoring on a previous price level long after conditions have changed. Stale anchors can persist well past their relevance.
Key Takeaways
- Anchoring bias leads traders to fixate on an initial reference price, distorting subsequent judgement about whether current levels represent genuine value.
- Anchoring bias leads traders to fixate on an initial reference price, often their own entry point, distorting judgement about whether current price genuinely represents good value.
- The general anchoring bias concept explained.
- How this specifically manifests around entry price.
- Anchoring on previous highs and lows.
Frequently asked follow-up questions
Is it ever useful to remember my entry price at all?
Yes, for calculating your actual profit or loss and risk-reward outcome, though this differs from letting it bias your forward-looking decision about whether to hold or close.
Does anchoring bias affect experienced traders too?
Yes, this is a general human cognitive tendency rather than something automatically eliminated through experience, making ongoing awareness valuable regardless of experience level.
Can anchoring ever work in my favour by coincidence?
Occasionally a decision influenced by this bias might coincidentally work out, but this reflects luck rather than sound process, and doesn't validate anchoring as a reliable approach.
How is anchoring different from the sunk cost fallacy?
They're related but distinct; anchoring concerns fixating on a reference point generally, while sunk cost specifically concerns reluctance to abandon something already invested in, discussed in detail elsewhere.
Can a trading journal help me identify my own anchoring patterns?
Yes, reviewing your past decisions can reveal whether you've been anchoring on entry prices or historical levels inappropriately.
Official sources: FSCA | SARB | SARS | JSE
📚 Sources & further reading
This article draws on general information published by the South African regulators and established financial education resources listed below. Always check each source directly for the most current detail.
- Financial Intelligence Centre: FICA Guidance
- Britannica Money – Behavioral Biases in Trading
- Corporate Finance Institute (CFI)
- CFA Institute
- Investopedia
Explore more South African trading guides on TradeAnswers.
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