Loss Aversion: Why a ₹10,000 Loss Hurts More Than a ₹10,000 Gain Feels Good

Imagine two mornings. On the first, you open your brokerage app and see that your portfolio is up ₹10,000. On the second, it is down ₹10,000. If you are like most people, the second morning stays with you far longer. You check the app again at lunch, you replay the decision that led to it, and it may colour your mood for the rest of the day. The first morning, by contrast, produces a brief smile and is forgotten by evening. The amounts are identical. The feelings are not.

This asymmetry has a name: loss aversion. It is one of the most studied ideas in behavioural economics, and it shapes investing decisions in ways that are easy to miss precisely because they feel so natural. This article explains where the idea comes from, how it tends to show up for retail investors in India, and some practical ways to notice it in your own decisions.

Where the idea comes from

In 1979, psychologists Daniel Kahneman and Amos Tversky published 'Prospect Theory: An Analysis of Decision under Risk' in the journal Econometrica. The paper challenged the then-standard assumption that people evaluate risky choices purely by their effect on total wealth. Instead, Kahneman and Tversky found that people judge outcomes as gains or losses relative to a reference point, often whatever they consider 'normal' or what they started with, and that the pain of a loss is felt more strongly than the pleasure of an equivalent gain.

A simple way to see this is with a coin-flip bet: heads you win a sum of money, tails you lose the same sum. On paper this bet is perfectly fair. Yet when people are offered such bets in experiments, many decline them, and they typically ask for the potential gain to be substantially larger than the potential loss before they are willing to play. Researchers have often summarised this by saying that losses loom roughly twice as large as gains, though the exact ratio varies between people, contexts, and the size of the amounts involved.

Kahneman later received the 2002 Nobel Memorial Prize in Economic Sciences, in large part for this work with Tversky, who had died in 1996. The idea is now part of the standard toolkit for understanding how real people, as opposed to perfectly rational models of people, make financial decisions.

Checking more often makes markets feel riskier

In 1995, economists Shlomo Benartzi and Richard Thaler combined loss aversion with a second observation: how often people evaluate their investments. They called the combination 'myopic loss aversion'. The logic is straightforward. Over very short periods, such as a single day, a broad stock index falls quite often. Over longer periods, such as five or ten years, a diversified equity portfolio has historically been much less likely to show a loss, although that has never been guaranteed. If you check your portfolio daily, you are exposed to far more of those small red days, and because each loss stings more than each gain pleases, the overall experience feels worse than the long-term numbers would suggest.

Benartzi and Thaler argued that this pattern could help explain why many investors demand a large return premium before holding stocks: not because stocks are necessarily as dangerous as they feel, but because frequent evaluation makes the ride emotionally expensive. Smartphone apps with real-time portfolio values and push notifications have, if anything, made this kind of frequent evaluation easier than ever.

How loss aversion shows up for Indian investors

Loss aversion rarely announces itself. It usually appears disguised as caution, prudence, or 'waiting for the right moment'. Some common patterns among retail investors include:

• Pausing or cancelling a SIP after a few months of negative returns, even though the original plan was built around investing through ups and downs over many years.
• Refusing to sell a stock that has fallen below its purchase price, purely to avoid 'booking a loss', regardless of what has changed about the business.
• Moving money out of equity mutual funds into fixed deposits after a single difficult year, and then hesitating to return until markets have already recovered.
• Preferring products marketed as 'guaranteed' or 'capital protected' without examining the trade-offs, such as lower expected returns, lock-ins, or charges.
• Opening the portfolio app many times a day during a volatile week and making decisions based on how the last few hours felt.

None of these behaviours is automatically wrong. Sometimes pausing a SIP is genuinely necessary because of a job loss or an emergency. Sometimes moving to safer assets is the correct choice because a goal is approaching. The question worth asking is whether the decision follows from your circumstances and plan, or from the discomfort of seeing a negative number.

A worked illustration

Consider a hypothetical investor, Meera, who starts a ₹5,000 monthly SIP in a diversified equity fund with a ten-year horizon for her child's education. Six months in, the market falls and her investment shows a loss of around ₹3,000 on ₹30,000 invested. The loss feels significant, and a friend mentions that fixed deposits are 'safe'. Meera stops the SIP.

What changed? Her goal, horizon, and income did not. What changed was the reference point: the money she had put in became the benchmark, and falling below it triggered loss aversion. Ironically, the mechanics of a SIP mean that a fixed monthly amount buys more fund units when prices are lower, so the months she skipped were exactly the months in which each rupee would have bought the most units. That does not guarantee a good outcome, because markets can stay low for long periods, but it does show how a decision driven by short-term discomfort can work against the logic of the original plan.

Why loss aversion is not simply a flaw

It would be easy to treat loss aversion as a bug to be eliminated. That would be a mistake. Being careful about losses protects people from ruinous risks, and for someone with little financial cushion, avoiding a large loss genuinely matters more than chasing an equal gain. The problem is narrower: loss aversion becomes costly when it causes decisions that are inconsistent with your own goals, time horizon, and risk capacity, or when it is triggered by temporary price movements rather than by anything that affects your actual plan.

Practical self-checks

You cannot switch loss aversion off, but you can design your habits so that it has less influence over important decisions. Some techniques people find useful:

• Match your checking frequency to your horizon. If the money is meant for ten years from now, reviewing it monthly or quarterly gives you the information you need without exposing you to every daily swing.
• Ask the 'fresh money' question: if you had this amount in cash today, would you buy this exact investment at today's price? If the answer is yes, the fact that you are below your purchase price is not, by itself, a reason to sell. If the answer is no, the fact that you are below your purchase price is not a reason to hold.
• Look at the whole portfolio, not individual line items. A single red holding feels like a loss even when the overall portfolio is doing what it was designed to do.
• Write down, in advance, what would make you change course: a change in your goal, your income, the fund's mandate, or the business itself. Then compare any urge to act against that list.
• Notice the language you use. Phrases like 'I'll sell once I'm back to breakeven' are often a sign that the purchase price, rather than the investment's prospects, is driving the decision.

The takeaway

Loss aversion is not a sign that you are bad with money. It is a deeply human tendency that affects professionals and beginners alike. The useful skill is not to stop feeling losses but to recognise the feeling for what it is, separate it from the facts of your situation, and let your written plan, rather than the colour of today's number, make the decision.