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Behavioral Finance

The Psychology of FOMO Investing

By Amritha BadeAugust 12, 20268 min read

A stock rises 40 percent in a month. Screenshots of profits begin appearing online. Videos explain why the company is supposedly at the beginning of a much larger run. An investor who ignored the stock at $20 begins considering it at $35. Nothing about the underlying company may have changed enough to justify the investor's sudden interest. What changed was the visibility of everyone else's apparent success.

That is where FOMO enters financial markets.

Fear of missing out describes the discomfort people can experience when they believe others are benefiting from an opportunity they are missing. In investing, that pressure can encourage people to make decisions based on recent price movements, social attention, and the behavior of other investors.

This is particularly relevant now because investment information travels through social media with extraordinary speed.

A 2026 study published in the Journal of Financial Research found that more positive social-media sentiment was associated with greater herding behavior and lower informational efficiency in the equity-market setting studied by the researchers. Other academic work has also documented relationships between social-media activity and retail-investor herding.

The Securities and Exchange Commission has become increasingly direct about the risk. In February 2026, the SEC's investor-education and enforcement offices warned investors about stock-tip scams conducted through social media and advised people against making investment decisions solely from information received through social platforms or apps.

Why rising prices can make an investment feel safer

Logically, a higher price should not automatically make an investment more attractive.

Psychologically, it often can.

A rapidly rising stock produces social evidence. People post their gains. News coverage increases. Search activity expands. The investment begins feeling validated because so many other people appear interested in it.

That creates a dangerous shortcut: popularity begins standing in for analysis.

The investor may stop asking how much the company earns or whether the current valuation makes sense. Attention shifts toward a different question: how much money will I lose the chance to make if I do not buy now?

FOMO changes the reference point. Instead of comparing the investment's price with its financial value, the investor starts comparing their own results with someone else's.

Social media can hide the denominator

A screenshot showing a $20,000 gain reveals very little by itself.

It may not show how much capital the person started with. It does not reveal their losses in other positions. It may omit the risk they took, the leverage they used, or whether the trade shown is even authentic.

The success stories are also more visible than the quiet failures.

Someone who makes an unusually profitable trade has an incentive to post about it. Someone who loses money may close the app and say nothing.

That creates a distorted sample of what investing actually looks like.

The SEC warned as early as 2021 that following heavily promoted stocks on social media can expose investors to significant losses, particularly when short-term trading takes place in volatile securities.

The concern has only become more relevant as financial content has expanded across short-form video platforms and private group chats.

Herding can become self-reinforcing

Investor excitement can sometimes affect the market itself.

When enough people buy an asset because it is rising, their purchases can contribute to additional price increases. Those gains attract more attention, which can draw in additional buyers.

This can continue for some time.

The fact that a price continues rising does not prove that every investor participating is irrational. New information may genuinely justify a higher valuation. The difficult part is distinguishing a change in fundamental value from a wave of attention that is feeding on itself.

Eventually, price still has to coexist with economic reality.

A stock represents a claim on a real business. Over long periods, factors such as profitability, cash generation, competitive position, and the price paid for those economics become difficult to ignore.

A useful way to interrupt FOMO

One of the simplest questions an investor can ask is: Would I still want to own this if I had never seen its recent price chart?

That question forces attention back toward the investment itself.

A second useful exercise is writing down the reason for buying before placing the trade. What would have to happen for the investment thesis to be correct? What evidence would show that the thesis has failed? What valuation assumptions are being made?

If the only explanation is that the price has been rising and everyone online seems excited, the investor has learned something important before risking money.

A cooling-off period can also help. Financial markets produce opportunities continuously. Urgency should be examined carefully when nobody has actually imposed a deadline.

Financial literacy is partly emotional literacy

Learning how to calculate a return is important. So is learning how your own decision-making changes when money becomes emotional.

People do not become immune to crowd behavior simply because they know what a P/E ratio is. Experienced investors can still become overconfident during strong markets or fearful during declines.

Financial literacy therefore includes recognizing the conditions under which judgment becomes less reliable.

FOMO thrives when prices are moving quickly and social proof is abundant. The advantage belongs to the investor who can separate the excitement surrounding an asset from the economics underneath it.

Sources

  • U.S. Securities and Exchange Commission, Social Media and Stock Tip Scams, February 6, 2026.
  • Ni Yang, Social Media Sentiment, Investor Herding and Informational Efficiency, Journal of Financial Research, 2026.
  • Yoon and Oh, Investor Herding Behavior in Social Media Sentiment, Frontiers in Physics.
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