The Immortal Rule of Compound Interest

Albert Einstein purportedly called compound interest the 8th wonder of the world. But why is it so powerful? It is the compounding of interest on past interest, allowing an account to grow exponentially rather than linearly.

S&P 500 Math

The S&P 500 (an index of the 500 largest US companies) has historically generated an average annual return of roughly 10% per year. If today at age 25, you steadily invest $300 per month (about $10 a day).

You simply remain disciplined, buying an ETF that tracks the S&P 500 (like Vanguard's VOO or SPY). You don't withdraw it, you reinvest dividends, and you ignore news about FED rate hikes. By the time you reach age 60:

• Your total out-of-pocket savings effort: only $126,000.
• TOTAL RESULTING PORTFOLIO ASSET VALUE: $1,139,000. You have officially become a millionaire without ever needing to look at technical chart patterns like MACD or RSI.

The ETF Investment Vehicle

To avoid the headache, you shouldn't buy individual stocks (Who knows how long Apple will reign; remember Nokia?). Just buy the whole basket. Examples:

1. Vanguard: The pioneer of this passive fund model. VOO’s annual expense ratio is a minuscule 0.03%.
2. Betterment (Robo Advisor): It can even connect to your bank, automatically deducting your deposits on payday to buy shares—you don't even need to manually log in.

The Lesson: If you struggle to become a scalping day trader in derivatives, 90% will burn their accounts. The patient individual aggressively accumulating into Broad Market Indices often ends up smiling the longest.