Glossary · Risk · Beginner-friendly

Compounding

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In plain English

Compounding is growth on top of earlier growth - your returns start earning their own returns when you leave money invested.

Everyday analogy: A snowball rolling downhill, picking up more snow as it goes.

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Why it matters

Compounding is why time in the market usually beats heroic timing - when costs and panic exits stay under control.

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Why time matters

Interrupted compounding - panic sales, high fees, long cash gaps - often hurts more than picking a slightly worse asset.

Silent killers

Fees, taxes, and unnecessary trading friction quietly erase compounding.

Simple examples

Missed rebound days

Sitting out the strongest recovery sessions after a crash can leave you permanently behind a patient peer with the same stocks.

Missed rebound days

Two investors hold the same fund; one sits out the strongest recovery month after a crash and never fully catches up.

Easy mistakes to avoid

  • Interrupting compounding with frequent full exits
  • Ignoring fees that quietly erase returns
  • Confusing buy-and-forget with never reviewing the thesis

Remember: Protect compounding: control costs, avoid panic exits, revisit theses.

Learn more in lessons

Short structured lessons on the same idea, with more steps and practice tips.

  • Compounding and time in the marketCompounding turns modest returns into large outcomes when time, reinvestment, and low costs stay intact.

Related words

Learn the next simple idea when you're ready.

Dollar-cost averagingTotal returnDividendsVolatilityDrawdownDiversification

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Live market examples

Real delayed prices that help you see Compounding in action, for learning. Tap a card to open the full quote.

SPYSPY

$757.83

-0.60%

Delayed · CNBC

AAPLAAPL

$326.57

+3.56%

P/E (TTM)42.39

Delayed · CNBC

MSFTMSFT

$492.44

+0.16%

P/E (TTM)27.13

Delayed · CNBC

Open any card for the full quote, chart, and news. Compare peers from the quote page when you want relative performance.