Historical Data Simulation

FOMO Calculator

Enter a ticker, investment date, and amount to compare historical and current prices and instantly see your simulated return. Supports both US and Korean stocks.

What if I had bought then...?

For Korean stocks, append .KS (KOSPI) or .KQ (KOSDAQ).

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Guide to Investment Simulation

What is FOMO Investing Psychology?

FOMO (Fear Of Missing Out) is the anxiety of being left behind while others profit. In a bull market, seeing friends and social media posts about massive gains triggers an emotional urge to jump in — often at the worst possible time.

This chase buying behavior is dangerous because it leads to purchasing near market peaks. When the inevitable correction comes, FOMO investors often panic-sell at the bottom, locking in the maximum loss. Understanding this psychological trap is the first step to avoiding it.

The Right Way to Look at Past Data

Survivorship bias is one of the biggest traps in analyzing historical data. We only see the stocks that survived and thrived — not the countless companies that went bankrupt or delisted. This creates an illusion that investing is easier than it actually is.

Remember: past performance does not equal future performance. The fact that a stock rose 1,000% over 10 years does not mean it will do so again. Use historical simulations as educational tools, not as investment signals.

The Power of Long-Term Investing

The S&P 500 has delivered an average annual return of approximately 10% over the past 50+ years, including dividends. Thanks to the compounding effect, $10,000 invested in 1970 would be worth over $1.5 million today.

However, this requires patience through multiple crashes (1987, 2000, 2008, 2020). The key lesson: time in the market beats timing the market. Consistent, disciplined investing over decades delivers results that short-term speculation rarely matches.