What Is Anchoring, and How Does It Skew My Money Decisions?
Last reviewed: July 2026
Anchoring bias is the brain's habit of latching onto the first number it sees and using that number as a reference point for every judgment that follows. When you decide a stock is "cheap" because it once traded at $200, or you refuse to sell a house below the price you paid, you are anchoring. The first number sticks, and it quietly warps decisions that should be based on what something is worth today, not what a number told you yesterday.
Key Takeaways
- Anchoring bias makes the first number you see the reference point for every decision that follows, even when that number is irrelevant.
- The effect was first documented by psychologists Amos Tversky and Daniel Kahneman, whose work later won the 2002 Nobel Prize in economics.
- Cost basis anchoring keeps investors holding losers and selling winners, the opposite of what tax-smart investing rewards.
- You can beat anchoring by deciding what an asset is worth before you ever look at the price you paid.
About the Author: Jeff Judge, CFP®, AEP®, ChFC®, CLU® is Managing Partner of Chesapeake Financial Planners in Forest Hill, Maryland. He has been helping families and business owners in Harford County and the Baltimore metro area navigate behavioral money traps since earning his CFP® certification in 2013, by using Chesapeake Financial Planners’ signature process, the R.U.D.D.E.R. method™. Jeff has watched anchoring cost clients more money than almost any other bias, mostly because it feels like prudence when it's actually paralysis.
Anchoring shows up everywhere money changes hands. Sellers anchor to list price. Buyers anchor to the first offer. Investors anchor to what they paid. The number itself doesn't have to be relevant to influence you. That's what makes the bias so sneaky. Below, I'll break down how it works, where it does the most damage to your portfolio, and how to build a habit that keeps the first number from running your decisions.
What Is Anchoring Bias, in Plain Terms?
Anchoring bias is a mental shortcut where the first piece of information you receive, usually a number, becomes the baseline you compare everything else against. Once that anchor is set, your brain adjusts away from it but rarely far enough.
Psychologists Amos Tversky and Daniel Kahneman ran the classic experiment in the 1970s. They spun a rigged wheel that landed on either 10 or 65, then asked people what percentage of African nations were in the United Nations. People who saw 10 guessed lower; people who saw 65 guessed higher. The wheel was random and meaningless, yet it moved their answers. Kahneman's work on this and related biases earned him the Nobel Prize in Economic Sciences in 2002.
The takeaway: your brain will anchor to a number even when you know, logically, that the number tells you nothing. That's not a flaw you can think your way out of in the moment. It's a default setting.
How Does Anchoring Skew My Investing Decisions?
Anchoring does the most financial damage through what advisors call cost basis anchoring, where you fixate on the price you paid for an investment instead of its value today.
Here's the trap. You buy a stock at $80. It drops to $50. Logically, the right question is: would I buy this at $50 right now? But your anchored brain asks a different question: when will it get back to $80 so I can break even? You hold a sinking position waiting for a number that has nothing to do with the company's future, all because $80 is burned into your memory.
The same anchor works in reverse. A stock you bought at $20 climbs to $60, and you sell to "lock in the gain," even though the business is stronger than ever. You anchored to the purchase price and treated the gain as the finish line.
Research from the field of behavioral finance, summarized by Morningstar, consistently shows that investors who chase reference prices tend to hold losing positions too long and sell winners too early. That pattern, sometimes called the disposition effect, is anchoring wearing a different hat.
This is where I tell clients something blunt: the market does not know what you paid, and it does not care. Your cost basis matters for taxes. It tells you nothing about what happens next.
Where Else Does Anchoring Cost Me Money?
Anchoring reaches well beyond your brokerage account. It shapes negotiations, big purchases, and how you judge whether something is a good deal.
When a house is listed at $500,000, every offer you make is measured against that number, even if the home is worth $450,000. When a car sticker says $40,000, a "discount" to $36,000 feels like a win, regardless of the car's real value. Retailers know this, which is why "originally $200, now $120" is on every tag. The crossed-out price is a manufactured anchor designed to make the real price feel generous.
In financial planning, anchoring sneaks into retirement projections too. If the first portfolio number someone hears is what they had at the market peak, every balance afterward feels like a loss, even when their plan is fully on track. The peak becomes an anchor that fuels anxiety and bad timing decisions.
According to a 2024 analysis from the National Bureau of Economic Research, reference-point thinking measurably affects how households respond to gains and losses, often leading them to take on more risk to recover an anchored amount. The number you're chasing can push you toward exactly the wrong move.
How Do I Stop Anchoring From Running My Decisions?
You beat anchoring by deciding what something is worth before you ever look at a reference number. Set the standard first; check the price second.
Practically, that means a few habits. Before buying or selling an investment, write down what you think it's worth and why, based on the fundamentals, not the price you paid. When negotiating, decide your walk-away number in advance so the seller's first offer can't reset your sense of fair value. When reviewing your portfolio, judge it against your plan and your goals, not against the highest balance you ever saw.
At Chesapeake Financial Planners, we build decision rules into a financial plan precisely so emotion and anchors don't drive the moment. A written rule for when to rebalance or harvest a loss takes the anchored number out of the equation. The plan decides, not the price tag.
The honest truth is you won't eliminate anchoring. Even people who study it for a living still feel its pull. What you can do is build a process that checks your instinct before you act on it. That gap between feeling and action is where good decisions live.
Frequently Asked Questions
What is anchoring bias in simple terms?
Anchoring bias is the tendency to rely too heavily on the first number or piece of information you encounter when making a decision. That first number becomes a mental reference point, and your judgments adjust away from it but usually not far enough, even when the anchor is completely irrelevant to the choice at hand.
Why is cost basis anchoring a problem for investors?
Cost basis anchoring causes investors to fixate on the price they paid rather than what an investment is worth now. This often leads people to hold losing positions waiting to "break even" and to sell winners too early to lock in gains, which is the opposite of tax-efficient, forward-looking investing behavior.
Can you actually overcome anchoring bias?
You cannot fully eliminate anchoring bias because it operates automatically, even in experts who study it. You can reduce its impact by deciding what something is worth before seeing a reference number, setting walk-away points before negotiating, and using written rules in a financial plan so an anchored number doesn't drive decisions in the moment.
How does anchoring affect big purchases like homes and cars?
Anchoring affects big purchases because the listed or sticker price sets a reference point that all subsequent offers and discounts are measured against. A "$4,000 discount" feels like a win even when the underlying item is overpriced, because your brain anchors to the original number rather than the asset's true market value.
Is anchoring the same as the disposition effect?
Anchoring and the disposition effect are closely related but not identical. Anchoring is the broad tendency to fixate on a reference number. The disposition effect is a specific investing pattern, driven partly by anchoring, where people sell winning investments too soon and hold losing ones too long, often anchored to their purchase price.
Who first discovered anchoring bias?
Psychologists Amos Tversky and Daniel Kahneman first documented anchoring bias in the 1970s through experiments showing that random, irrelevant numbers influenced people's estimates. Their broader research on judgment under uncertainty reshaped economics and earned Kahneman the Nobel Prize in Economic Sciences in 2002, establishing anchoring as a core concept in behavioral finance.
Anchoring is just one of several biases quietly steering your money decisions, and the first step is recognizing when the first number you see is doing the talking. If this hit home, our free guide to What money biases quietly cost me, and how do I beat them? walks through the most common traps and how to beat them. You can also explore How does behavioral psychology affect personal financial decisions? and What is loss aversion, and how does it affect my investing? to see how these patterns connect. Download the guide at chesapeakefp.com.
Disclosures
The information provided is for educational purposes only and should not be construed as investment advice. Investment strategies should be tailored to individual circumstances, risk tolerance, and goals. Past performance doesn't guarantee future results. Consult with qualified financial professionals regarding your specific situation.
Advisors associated with Chesapeake Financial Planners may be either (1) LPL Financial Registered Representatives offering securities through LPL Financial, Member FINRA and SIPC, and investment advisor representatives offering investment advice through Great Valley Advisor Group; or (2) solely investment advisor representatives offering investment advice through Great Valley Advisor Group and not affiliated with LPL Financial. Great Valley Advisor Group, and Chesapeake Financial Planners are separate entities from LPL Financial.
