COMPOUNDINGTHEORY

COMPOUNDING THEORY

See what time
does to money.

We turn decades of market history into experiments you can actually see.

Get the Weekly Experiment Explore Experiments

INVESTING, VISUALIZED.

Two paths. One powerful variable: time.A fictional compound-growth curve rises faster than a fictional linear-growth path over forty illustrative years. Not market data or investment returns.Time changes the trajectory.YEAR 010203040
Compound growthLinear growth
DEMO / ILLUSTRATIVE ONLY · NOT INVESTMENT RETURNS
Market history, made visibleReal data. Clear assumptions.Independent thinking. Not investment advice.LESS NOISE. MORE PERSPECTIVE.

THE RESEARCH NOTEBOOK

Small questions. Long horizons.

Experiments that put familiar investing ideas to the test.

All experiments

S&P 500 / ILLUSTRATIVE PE PROXY

1986TODAY
Market historyEXPERIMENT 001

$10,000 in 1986: S&P 500 vs. Private Equity

Actual S&P data compared with an illustrative PE proxy: a synthetic smoothed, lagged S&P-return model—not actual private equity index results.

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CONCEPT PREVIEW · ILLUSTRATIVE

CompoundingCOMING SOON

$100 every week vs. $10,000 today

Two ways to start. One question: how much does timing matter?

In the research notebook 02

CONCEPT PREVIEW · ILLUSTRATIVE

THE FALL
Market historyCOMING SOON

Market crashes: buying before the fall

A closer look at the uncomfortable side of a long-term horizon.

In the research notebook 03

A DIFFERENT WAY TO LOOK AT MONEY

Curiosity over conviction.
Evidence over noise.

Compounding Theory is an independent educational media brand exploring what happens when money meets time. We make market history approachable—without pretending it can tell us what happens next.

The thinking behind the theory