The Little Book of Common Sense Investing

How to Become Rich Through Index Investing

A proven, low-cost approach to building wealth based on "The Little Book of Common Sense Investing" by John C. Bogle

Explore the Principles

Market Returns

Capture the full return of the stock market without trying to beat it

Low Costs

Keep more of your money with minimal fees and expenses

Time-Tested

A strategy that has outperformed most professional investors

1. Understand
Learn index fund basics
2. Choose
Select your funds
3. Invest
Make first investment
4. Hold
Stay the course
5. Reinvest
Compound dividends
6. Prosper
Achieve financial freedom

Phase 1: The Foundation

The Market Always Wins

Principle 1

Over time, the stock market's return is simply the sum of all business earnings growth plus dividends. Trying to beat the market is a zero-sum game before costs and a loser's game after costs.

"The most that owners in aggregate can earn between now and Judgment Day is what their businesses in aggregate earn."
— Warren Buffett

Costs Matter

Principle 2

Every dollar paid in fees, expenses, and transaction costs is a dollar less in your pocket. High costs are the primary reason most actively managed funds underperform the market.

"The relentless rules of humble arithmetic guarantee that investors as a group must fall short of the market return by the amount of the costs they incur."
— John C. Bogle

Phase 2: The Strategy

Buy the Haystack

Principle 3

Instead of trying to pick winning stocks or funds (the needles), buy the entire market (the haystack) through a low-cost index fund. This guarantees you'll earn the market's return.

Focus on Total Market

Principle 4

A total stock market index fund is the simplest, most efficient way to own American business. It's broadly diversified, low-cost, and requires no maintenance.

Phase 3: The Execution

Start Early

Principle 5

Begin investing as soon as possible. Time magnifies the power of compounding returns. $10,000 invested at age 25 could grow to over $300,000 by age 65 at 7% annual return.

Invest Regularly

Principle 6

Set up automatic contributions to your index fund(s). Dollar-cost averaging smooths out market volatility and builds wealth steadily over time.

Phase 4: The Behavior

Stay the Course

Principle 7

Ignore market fluctuations and media noise. The stock market has always recovered from declines and gone on to new highs. Time in the market beats timing the market.

Avoid Performance Chasing

Principle 8

Past performance does not predict future results. Funds that outperform eventually revert to the mean. Stick with your index fund through all market conditions.

Phase 5: The Results

Reinvest Dividends

Principle 9

Dividends have accounted for about 40% of the stock market's total return since 1926. Automatically reinvesting dividends supercharges your compounding returns.

Achieve Financial Freedom

Principle 10

By consistently investing in low-cost index funds over decades, you'll likely accumulate substantial wealth. The magic of compounding does the heavy lifting.

"The index fund is the only investment that essentially guarantees you'll capture your fair share of stock market returns."
— John C. Bogle
Foundation Principles
Strategy Principles
Execution Principles
Behavior Principles
Results Principles

See the Power of Index Investing

Projected Results

Total Contributions
$190,000
Estimated Value
$734,549
Growth
$544,549

Recommended Tools

ActiveBudget

Comprehensive personal budget management solution with semantic analysis of your expenses.

  • Automatic tracking
  • Smart forecasts
  • Personalized alerts
Discover

Simulators

Evaluate your financial projects with our advanced simulation tools.

  • Savings & investment
  • Retirement planning
  • Insurance & protection
View simulators

Calculators

Optimize your loans and budget with our precise calculation tools.

  • Mortgage
  • Debt capacity
  • Monthly budget
View calculators

Frequently Asked Questions

What exactly is an index fund?

An index fund is a type of mutual fund or ETF designed to track the performance of a specific market index, such as the S&P 500 or the total stock market. Instead of trying to pick winning stocks, index funds aim to match the market's performance at very low cost.

Why do index funds typically outperform actively managed funds?

Index funds outperform most actively managed funds primarily because of lower costs (no high manager fees or frequent trading expenses) and because most active managers fail to consistently beat the market over long periods after accounting for fees.

How much should I invest in index funds?

A common recommendation is to invest 15-20% of your income, but the exact amount depends on your financial goals, age, and other factors. The key is to invest consistently over time, even if you start with small amounts.

What's the best way to get started with index investing?

1. Open an account with a low-cost provider like Vanguard, Fidelity, or Schwab
2. Choose a broad market index fund (like a total stock market or S&P 500 fund)
3. Set up automatic contributions
4. Stay invested through market ups and downs