Loss Aversion Investing: Why Market Downturns Feel Worse Than They Are

A market drops 3% in a week and it feels like the beginning of something bad. A market climbs 3% in a week and it barely registers. That imbalance isn’t a coincidence, and it isn’t a personal flaw. It’s called loss aversion: the tendency to feel losses far more sharply than gains of the same size. Understanding loss aversion in investing won’t make a market downturn painless, but it can change how you respond the next time volatility shows up.

At a glance

• Losses tend to feel about twice as strong as equal gains, which makes every market drop feel bigger than it is.
• Pullbacks are a normal part of investing. Since 1980 the S&P 500 has dropped an average of 14.2% at some point each year, yet finished positive in 35 of 46 years.
• The fix isn’t ignoring the feeling. It’s having a plan that already expects declines, so fear of losses doesn’t make the decision for you.

What is loss aversion?

Loss aversion is one of the best-documented ideas in behavioral finance. Psychologists Daniel Kahneman and Amos Tversky described it in 1979 as part of prospect theory, work that later helped earn Kahneman a Nobel Prize. Their finding was simple: losses loom larger than gains.

In one of Kahneman’s well-known examples, people offered a coin flip where they could lose $10 typically wanted the chance to win more than $20 before they’d take the bet (Schwab Asset Management). In other words, the pain of a loss tends to feel roughly twice as strong as the pleasure of an equal gain.

A loss and a gain of the same size are mathematically identical. Emotionally, they aren’t. That gap is a big part of why market declines feel so much more alarming than they usually are.

How loss aversion shows up in investing

Fear of losses rarely announces itself. It usually looks like a reasonable decision in the moment:

• Selling after a drop. Getting out “until things settle down” turns a temporary decline into a permanent loss, and leaves you deciding when to get back in.
• Sitting in cash too long. After a scare, it’s tempting to wait for the “right time” to reinvest. Recoveries often happen before that moment feels safe.
• Holding losers to avoid admitting a loss. The flip side of loss aversion: keeping an investment that no longer fits, because selling would make the loss feel real. Researchers call this the disposition effect.
• Checking constantly. Watching your account every day during a sell-off makes the losses feel bigger and more frequent, which makes every other mistake on this list more likely.

Why checking your portfolio makes downturns feel worse

There’s a second effect layered on top of loss aversion. Economists Shlomo Benartzi and Richard Thaler called it myopic loss aversion: the more often you evaluate your investments, the more often you see a loss, and the more painful investing feels.

Over a single day, markets fall almost as often as they rise. Over longer stretches, the long-term trend has more room to show through the noise. So the same portfolio can feel risky to someone checking it daily and steady to someone reviewing it a few times a year. And because most people check more often when markets are rough, their sense of risk gets skewed toward the worst moments.

What market history says about downturns

Here’s the part that tends to surprise people: pullbacks aren’t rare exceptions. They’re a normal, recurring feature of investing in stocks.

According to J.P. Morgan’s Guide to the Markets, from 1980 through 2025 the S&P 500 fell an average of 14.2% from its high to its low at some point during each calendar year. Despite those drops, the index finished the year with a positive return in 35 of those 46 years.

In other words, the dip that feels alarming in the moment usually isn’t a break from the normal pattern. It is the normal pattern.

This is historical index data shown for illustrative purposes only. Indices are unmanaged and cannot be invested in directly, and past performance is not indicative of future results.

Why it still feels different when it’s your money

Knowing the statistics doesn’t automatically make a downturn feel comfortable, and that’s worth acknowledging honestly rather than dismissing. There’s a real difference between reading about historical volatility and watching your own account value fall in real time.

The goal isn’t to convince yourself the discomfort is irrational. It’s to recognize it for what it is: a predictable, shared human response, not a signal that something has gone wrong with your plan.

Loss aversion near and in retirement

There’s one situation where fear of losses deserves a closer look instead of a pep talk: when you’re about to retire or already drawing income from your portfolio.

A 14% decline matters less to someone who won’t touch the money for 15 years than to someone who needs to sell investments next month to pay the bills. That isn’t loss aversion. It’s a real limit on how much risk your plan can absorb, and we explain the difference in Risk Tolerance vs. Risk Capacity in Retirement.

The answer usually isn’t to abandon stocks altogether, a move we look at in Why Time in the Market Beats Timing the Market. It’s to make sure the money you’ll need soon isn’t the money exposed to a downturn.

How to keep loss aversion from making your decisions

A few habits consistently help investors keep perspective when markets are falling:

• Check less often during volatile stretches. Frequent checking amplifies the emotional hit without giving you useful information.
• Revisit your time horizon. Money you don’t need for another 15 years is in a very different position from money you need next year.
• Keep a cash reserve. Having near-term spending set aside means a downturn doesn’t force you to sell. See How Much Should You Keep in Cash Reserves?
• Decide your rules before the storm. A plan that already says how you’ll rebalance and what would actually trigger a change is much easier to follow than a decision made mid-panic.
• Watch for the opposite bias too. After a strong run, the urge to chase what just went up is its own trap, which we cover in Why Chasing Last Year’s Winners Usually Backfires.
• Talk before you act. A second opinion from someone who knows your plan is often the difference between a reaction and a decision.

A plan built with volatility already anticipated is doing exactly what it was designed to do when volatility shows up. It’s not failing. It’s functioning.

Where we fit in

Part of our role isn’t just building the portfolio. It’s being the steady presence when that portfolio is doing what markets normally do. We’d rather have the honest conversation about what volatility looks like before it happens, so when it does, it feels recognizable instead of alarming. That conversation is built into the Define and Design stages of our planning process.

Frequently asked questions

Talk it through with us

If a recent downturn has you second-guessing your plan, that instinct is worth talking through rather than acting on alone. Book a 20-minute Fit Call. It’s virtual, no prep is needed and there’s no obligation.