Note: This article discusses Indonesian financial products and markets. The principles apply globally, though specific products, regulations, and tax treatments vary by country.

Trading vs Passive Investing: The Data Speaks

Every day, millions of Indonesians open stock trading apps, buying and selling in hopes of beating the market. Social media is full of green profit screenshots. But data from around the world consistently shows one thing: the majority of traders lose money.

This isn’t opinion. It’s fact supported by decades of academic research. Learn more about why traders lose and beware of finfluencers.

Global Data: Retail Traders Almost Always Lose

Study from Brazil (Barber et al., 2019)

Researchers analyzed all day traders in the Brazilian stock market during 2013-2015¹:

• 97% of day traders lost money
• Only 1.1% profited more than Brazil’s minimum wage
• The more frequent the trading, the bigger the losses
• Even traders with years of experience still lost money

Study from Taiwan (Barber et al., 2009)

Taiwan has the most complete trading data in the world because all transactions are recorded²:

• Over a 15-year period, less than 1% of traders consistently generated profit after costs
• The most active day traders lost an average of 3.8% per month
• Total losses of Taiwan retail traders: approximately $72 billion over 15 years

Data from India (SEBI, 2023-2024)

The Securities and Exchange Board of India released an official study³:

• 89% of F&O (futures & options) traders lost money during FY22
• 2024 update: 93% of traders lost money during FY22-FY24, total losses of 1.8 lakh crore INR (approximately IDR 3,600 trillion)
• Average loss per trader was very significant
• Only 7% profited, and their profits were small compared to the 93% who lost

Why Does This Happen? Mathematical Reasons

1. Transaction Costs Erode Profits

Every time you buy and sell stocks in Indonesia:

If you trade 5 times a month (round trip), your costs: 0.4% × 5 = 2% per month = 24% per year.

This means your portfolio must gain 24% per year just to break even before making any profit. The IDX Composite averages only ~10-12% per year.

2. The Market is a Zero-Sum Game (Minus Costs)

For every trader who profits, another trader loses. But after deducting transaction costs, all traders combined must lose. This isn’t opinion — it’s arithmetic.

William Sharpe, Nobel Economics laureate, proved this in his classic paper “The Arithmetic of Active Management” (1991): on average, active investors must lose to passive investors by the amount of costs they incur.

3. You’re Competing Against Algorithms and Professionals

When you trade, your opponents are:

• High-frequency trading algorithms transacting in milliseconds
• Professional fund managers with teams of dozens of analysts
• Insiders with more information than you (though illegal, this still happens)

You’re trading during lunch break while checking your phone. They’re trading as a full-time job with billions in capital.

Indonesian Data: What We Know

OJK (Financial Services Authority) and BEI (Indonesia Stock Exchange) haven’t published detailed data like Brazil or Taiwan. But there are strong indicators:

• Active vs registered investors: Of ~12 million registered investors at KSEI (Indonesian Central Securities Depository) in 2025, only a small portion actively trade. Many are “dormant” after a bad first experience.
• Foreign and institutional investor dominance: About 50-60% of daily transactions on BEI are done by institutional and foreign investors who are far more sophisticated.
• Young investor growth during COVID: Millions of new investors entered during 2020-2021, many attracted by penny stock hype and crypto. Many subsequently stopped.

Survivorship Bias: Why Social Media Is Misleading

You only see successful traders on Instagram and Twitter. Those who lose don’t post.

This is called survivorship bias:

• 100 people start trading
• 95 people lose → stay quiet or disappear
• 5 people profit → post screenshots, create paid courses, become influencers
• You see these 5 people and think “trading is easy”

The reality is, the probability of you becoming one of those 5 is very small — and even of those 5, most will lose eventually in the long run.

Passive Investing: The Boring Strategy That Wins

Passive investing means buying index funds regularly and doing nothing. No technical analysis, no reading candlesticks, no “hot stock picks of the week.” Understand more about index fund investing.

The result?

10-Year Comparison (Illustration):

Passive investors just sit and wait. Active traders spend hours every day — and on average get worse results.

”But I’m Different, I Can Beat the Market”

This is what almost everyone who starts trading thinks. Human psychology has a bias called overconfidence — we tend to think our abilities are above average.

The facts:

• In a classic survey, 93% of US drivers consider themselves “above average” — mathematically impossible
• The same applies to trading: almost all new traders believe they’ll be the exception
• Data shows that even experience doesn’t help — experienced traders in Brazil and Taiwan still lose money

What Should You Do?

1. Don’t trade. Seriously. Data from dozens of studies in dozens of countries all say the same thing.

2. Invest regularly in index funds. Choose mutual funds that track IDX30 or LQ45, invest every month, and forget about it.

3. Use your time for other things. Time saved from not trading can be used to improve job skills (which is statistically far more profitable than trying to beat the market).

4. If you want “excitement” — allocate a maximum of 5% of your portfolio for trading. Consider this entertainment money that’s ready to be lost, not an investment strategy.

The Rarely Discussed Fact: 80-95% of Traders Lose

Many articles on the internet — including from major banks like OCBC and securities firms like Mandiri Sekuritas — promise IDR 5-30 million per month earnings from stock trading, but don’t mention the fact that academic research in various countries shows 80-95% of active traders lose money in the long run. Studies from University of California found that only 1% of day traders consistently generate profit after transaction costs are deducted. Instead of chasing quick gains through trading, disciplined long-term investors in indices have historically achieved 8-10% returns per year without needing to monitor the market every day.

Summary

Trading is fun. Passive investing is boring. But your money doesn’t care whether you’re having fun.

References

1. Barber, B.M., et al. “Trading is Hazardous to Your Wealth.” Journal of Finance, 2000.
2. Barber, B.M., et al. “Do Day Traders Rationally Learn About Their Ability?” UC Davis, 2014.

Disclaimer: This article is for educational purposes only, not investment advice.

The Psychological Trap: Why Smart People Still Trade

Even after reading all this data, many intelligent, educated people still believe they can beat the odds. This isn’t stupidity—it’s human psychology working against us.

Pattern Recognition Gone Wrong

Our brains evolved to recognize patterns for survival. When we see three green candles in a row, our brain screams “pattern!” and wants to act. But stock market movements over short periods are largely random noise. We’re applying pattern recognition to randomness, which is like seeing shapes in clouds—the patterns exist only in our minds.

The Thrill Factor

Trading triggers the same dopamine response as gambling. Each trade creates suspense, anticipation, and either the high of winning or the motivation to “win back” losses. Passive investing offers none of this excitement—it’s watching paint dry while getting richer.

Studies show that active traders often continue trading even after sustained losses, not because it’s profitable, but because the activity itself is psychologically rewarding. This is why casinos make money.

Social Proof and FOMO

When your friends post their trading wins on group chats, the fear of missing out becomes overwhelming. What you don’t see are the other 20 friends who lost money and said nothing. The loudest voices in any market are those who just won—temporarily.

The Cost Beyond Money: Time and Mental Energy

Even if you somehow break even in trading (which 90%+ don’t), consider the hidden costs:

• Time spent: 5-10 hours per week monitoring markets, reading news, analyzing charts
• Mental bandwidth: Constant worry about positions, checking prices throughout the day
• Opportunity cost: That time could be spent learning job skills, building a business, or with family

If you spent those 10 hours per week building a side business or improving your career skills, the expected return would be far higher than the expected return from trading (which is negative for most people).

A senior software developer who spends 10 hours weekly trading might lose both money AND the promotion they would have gotten by spending those hours on professional development.

Related Articles

• Why Traders Lose Money
• Beware of Finfluencers
• Introduction to Passive Investing
• Understanding Index Funds
• Risk and Return in Investing