Dumb Money & the GameStop Saga: The Dangers of FOMO and Herd Mentality

In early 2021, something strange happened on Wall Street. The stock of a nearly bankrupt video game store - GameStop - suddenly rocketed from under USD5 to over USD400 in a matter of weeks. Not because the company suddenly made huge profits. But because millions of retail investors on Reddit bought the same stock, at the same time, to "teach hedge funds a lesson".

The film Dumb Money (2023) tells this saga. The title "dumb money" itself is a derogatory term Wall Street uses for ordinary retail investors - "dumb" money assumed to know nothing. The film shows how "dumb money" can occasionally win big, but also how many ultimately lose badly.

For Malaysian investors, the GameStop saga and the Dumb Money film are the best case study of two of the most dangerous psychological traps in investing: FOMO (fear of missing out) and herd mentality. These two things can destroy your portfolio even after you've learned fundamental analysis.

In this article, I'll unpack the key lessons from Dumb Money - not to glorify stock gambling, but to help you recognise when emotion starts to take over reason.

Short Answer: What Are the Main Lessons of Dumb Money?

The main lesson of Dumb Money is: FOMO and herd mentality can make you buy at the peak and lose big. Keith Gill (Roaring Kitty) profited because he bought GameStop at USD5 based on a fundamental thesis, not because he followed the crowd. But most investors who entered late - because of FOMO when the stock was already USD300+ - eventually lost up to 85% when the price crashed back. The lesson: don't buy because everyone is buying, buy because you understand the true value.

What Was the GameStop Saga?

To understand the Dumb Money film, you need to understand what happened first (we previously wrote a full explanation of the GameStop saga in 2021).

In short:

1. GameStop is a US video game retailer seen as a "dying business" - physical stores in the era of digital downloads.
2. Hedge funds like Melvin Capital saw this and shorted GameStop stock massively - betting the price would fall.
3. Keith Gill (known as "Roaring Kitty" on YouTube, "DeepFuckingValue" on Reddit) believed GameStop was undervalued. He invested USD53,000 of his life savings in 2019 when the price was around USD5.
4. Gill shared his thesis on the subreddit r/wallstreetbets. The retail community piled in.
5. As many bought, the price rose. Hedge funds that shorted were forced to buy back to close positions (short squeeze) - which pushed the price EVEN higher.
6. The price soared from USD5 to over USD400 at the peak in January 2021.
7. Melvin Capital lost billions. Keith Gill became a millionaire (his net worth rose to USD34 million at one point).

Looks like an epic retail-vs-Wall Street victory. But the real story is more complex.

Lesson #1: The Winners Were Those Who Got In Early With a Thesis

Keith Gill didn't buy GameStop because of FOMO. He bought at USD5 based on fundamental analysis - he believed the market was too pessimistic about GameStop, and the extreme short interest (over 100% of existing shares!) created a short squeeze opportunity.

Gill had a clear thesis, took the risk early, and held his position despite the volatility. That's why he profited big.

Compare that to investors who entered at USD300 because they saw GameStop trending on Twitter and Reddit. They had no thesis - they were just afraid of "missing out". When the price crashed, they were the ones who lost.

The lesson: the winners in any mania are those who get in early with analysis, not those who follow the crowd late. If you just heard about a "hot" stock from social media, you're most likely already too late. This principle is the same one Peter Lynch taught in One Up on Wall Street - find value before others notice.

Lesson #2: FOMO Is the Investor's Biggest Enemy

FOMO - "fear of missing out" - is the fear of missing an opportunity others got. In Dumb Money, you see ordinary characters (nurses, students, store workers) who bought GameStop not because they understood the company, but because they didn't want to be "the only one who didn't join".

One of the real investors who inspired a character in the film, Kim Campbell, bought 100 shares of GameStop thinking: "This is going to happen, I can't be the one that didn't buy any."

This is FOMO in its purest form. The decision was made based on social emotion, not analysis.

Why is FOMO dangerous?

1. You buy at a high price - because you enter after the price has risen a lot
2. You ignore risk - because you focus on the potential profit others already got
3. You have no exit plan - because even your entry decision wasn't based on logic
4. You panic when it falls - because you never understood why you bought

In Malaysia, FOMO happens every time there's a "goreng" (pumped) stock going viral in Telegram groups or Bursa chatter. People see others profiting, then enter late. To learn how to avoid this trap, read my article on how to use i3investor & Telegram sentiment without becoming a victim.

Lesson #3: Herd Mentality - When "Many" Doesn't Mean "Right"

Herd mentality is the human tendency to follow the actions of a large group, even when it contradicts individual logic. It's rooted in survival psychology - throughout human history, following the group was usually safer.

But in investing, herd mentality almost always leads to disaster. In the GameStop saga:

• Many bought because many others bought (not because of fundamentals)
• "Hold the line" and "diamond hands" messages on Reddit created social pressure to NOT sell
• People who wanted to sell and take profit were seen as "traitors" to the movement

This social pressure caused many investors to hold the stock until it crashed back - because they didn't want to look "weak" in the eyes of the community. As a result, many who were up on paper ended up with real losses.

Here's the interesting part: the herd mentality that created the short squeeze (the rise) was the same one that destroyed many investors (when it fell). The same crowd can lift you up and drown you.

The lesson from Wolf of Wall Street applies here too: don't let others - whether greedy brokers or the Reddit crowd - control your buy and sell decisions.

Lesson #4: A Rising Stock Doesn't Mean a Good Company

One of the biggest mistakes new investors make: confusing stock price with company value.

Throughout the GameStop saga, the company itself didn't fundamentally change. It was still a struggling video game retailer. Earnings didn't soar. No revolutionary product was launched. The only thing that changed was market sentiment and stock supply-demand dynamics.

GameStop's price at USD400 did NOT reflect the company's true value. It reflected short squeeze + FOMO + herd buying. When this pressure subsided, the price fell back to levels closer to fundamentals - below USD18, down around 85% from the peak.

The lesson: a stock price can diverge far from fundamental value for a period, but eventually it returns (mean reversion). If you buy based on a rising price (momentum) rather than value, you're playing musical chairs - and you don't know when the music stops.

To learn to value a company properly, start by understanding the PE ratio and how to read financial statements.

Lesson #5: Social Media Can Be a Weapon - Or a Trap

The GameStop saga was the first time in history that retail investors, coordinated through social media, could move the market strongly enough to topple a hedge fund. That's the positive side - "people power".

But the negative side is far more relevant for most of us:

1. Echo chamber - on r/wallstreetbets, only profit stories go viral. People who lose stay quiet. This creates a false picture that "everyone is winning".
2. Unofficial pump - when an influencer or crowd promotes one stock, it can become an unofficial pump-and-dump, even without malicious intent.
3. Unbalanced information - social media gives you hype, not balanced analysis of the risks.

In Malaysia, the same pattern happens in stock Telegram groups, FinTwit, and finance TikTok. When a stock goes viral, remember: you see the winners, not the losers. To protect yourself, understand the signs of a goreng stock promoted through hype.

Lesson #6: Risk Management Matters More Than Stock Selection

The characters in Dumb Money who ended up worst were those who:

• Invested more than they could afford to lose
• Set no stop loss or exit plan
• Went all-in on a single stock
• Held until they were wiped out when the price crashed

Meanwhile Keith Gill, even though he was "all-in" on GameStop, started with an amount he could afford to lose (USD53,000 in savings, not borrowed money or grocery money). And he had a clear thesis with conviction.

The important lesson: how much you invest and when you exit matter more than which stock you pick. Even if you pick the right stock, if your position sizing is wrong (too big) or you have no exit plan, one mistake can destroy your portfolio.

Basic risk management principles: - Don't invest money you'll need in the next 1-2 years - Don't go all-in on a single stock (diversify) - Set an exit plan before entering (profit target + stop loss) - Don't average down on a falling stock without a new thesis

Lesson #7: "Dumb Money" Isn't Necessarily Dumb - But Easily Manipulated by Emotion

The film title "Dumb Money" is satire. Wall Street calls retail investors "dumb money" because they consider retail unsophisticated. The GameStop saga proved retail can win.

But ironically: what makes retail "dumb" isn't lower IQ - it's uncontrolled emotion. FOMO, herd mentality, greed, and fear. Disciplined retail investors with a process are "smart money" regardless of portfolio size.

You can be a small retail investor and still be "smart money" if you: - Make decisions based on analysis, not emotion - Have a clear thesis for every purchase - Manage risk with discipline - Don't blindly follow the crowd

Conversely, you can have a large portfolio and still be "dumb money" if you buy on hype and sell on panic.

FAQ: Common Questions About Dumb Money & GameStop

Q: Is the Dumb Money film based on a true story? A: Yes. It's based on the book "The Antisocial Network" by Ben Mezrich, telling the January 2021 GameStop short squeeze saga. The main characters are based on real people, though there's some dramatization.

Q: Who is Keith Gill (Roaring Kitty)? A: Keith Gill is a financial analyst who invested USD53,000 in GameStop in 2019. He shared his thesis on YouTube (Roaring Kitty) and Reddit (DeepFuckingValue), and became the central figure in the retail movement. His net worth rose to USD34 million at one point.

Q: Did everyone who bought GameStop profit? A: No. Those who entered early (like Keith Gill) profited big. But many who entered late due to FOMO - when the price was already USD200-400 - lost badly when the price crashed back below USD18 (down ~85% from the peak).

Q: What's the difference between FOMO and fundamental analysis? A: FOMO is buying because you fear missing an opportunity others got (emotion). Fundamental analysis is buying because you believe the company's value exceeds its current price (logic). Keith Gill used fundamentals; most of the crowd used FOMO.

Q: Is herd mentality always wrong? A: Not always, but it's dangerous because it makes you ignore your own analysis. In investing, the best decisions are always based on a solid individual thesis, not social pressure. The crowd can be right sometimes, but you won't know when.

Q: Could a GameStop happen on Bursa Malaysia? A: A massive short squeeze like GameStop is less likely on Bursa because the market structure differs (short selling is more restricted). But FOMO and herd mentality on "goreng" stocks do happen frequently on Bursa Malaysia.

Q: How do I avoid FOMO in investing? A: Have a clear investment process, set criteria before buying, don't make rushed decisions, and remember there will always be new opportunities. Missing one opportunity isn't the end of the world - losing capital is worse.

Q: Can retail investors win against institutions? A: Yes, but not by following the crowd. Retail wins with an edge institutions don't have - flexibility, patience, and local knowledge. Not with FOMO or gambling.

Conclusion

Dumb Money is not a story about how to get rich quick by following the crowd. It's a warning about how FOMO and herd mentality can destroy investors - even though the saga looked like a retail victory. The winners were those who entered early with a thesis (Keith Gill); the losers were those who followed the hype late without understanding what they bought. The biggest lesson: control your emotions, because the market is designed to exploit your FOMO and fear.

Before you can invest with discipline and avoid the FOMO trap, you need market access through the right platform.

Open a CDS Account to invest in Bursa Malaysia and also foreign stocks like the US and Hong Kong - so you can build a portfolio based on analysis, not social media hype.

For a systematic and disciplined investing foundation, download our Stock Market Basics Ebook for free before you start.

Further Reading

• GameStop: What Actually Happened?
• 7 Wolf of Wall Street Lessons on Stock Fraud and Greedy Brokers
• i3investor & Telegram Sentiment: How to Use 'Hot Stock' Chatter Without Becoming a Pump & Dump Victim
• Pump and Dump on Bursa Malaysia: 6 Signs of a 'Goreng' Stock Promoted Through Fake News
• One Up on Wall Street Summary: What Peter Lynch's Classic Teaches Malaysian Investors