What if?

  1. The question

    What if I invested in Bitcoin in 2017?

    $500/month Bitcoin DCA starting in 2017 versus the same habit in the S&P 500 — after the 2017 peak, on real weekly prices.

    Quick answer

    If you invested $100/month into Bitcoin from 2017-01-06 through 2026-09-04, total contributions would have been about $11,655 and a blind DCA portfolio would be worth about $68,486 (+487.6%) on this historical path — before fees and taxes.

  2. Assumptions

    What this page actually assumes

    • Bitcoin DCA, $500/month, held from the chosen start year.
    • Comparison is the identical monthly schedule in the S&P 500.
    • Starting in 2017 deliberately skips the cheapest early Bitcoin years and includes the 2017 peak / 2018 drawdown window.

  3. Historical data

    2017-01-06 → 2026-09-04

    Bitcoin’s series in this product begins in 2015. A 2017 start is still historical prices — not a backtest from 2009, and not a claim about the next cycle.

    Series: Bitcoin and S&P 500. Same contribution calendar. No data before 2015.

  4. Interactive simulation

    Change the habit, stay on the real curve

    Amount
    Start year

    $100/month · Bitcoin

    2017-01-06 → 2026-09-04 · $100/month · Bitcoin

    Contributed$11,655
    Held to the last date$68,486
    Return+487.6%
    Bitcoin2017-01-06 → 2026-09-04 · $100/month
     +$56,830 vs cash inEnded $68,486 on $11,655 contributed
    Portfolio (DCA)Cash contributed
    $0$25.9k$51.7k$77.6k$103k2017-012018-122020-112022-102024-092026-09

    $100/month · S&P 500

    Same $500/month into the S&P 500

    2017-01-06 → 2026-09-04 · $100/month · S&P 500

    Contributed$11,655
    Held to the last date$21,904
    Return+87.9%
    S&P 5002017-01-06 → 2026-09-04 · $100/month
     +$10,248 vs cash inEnded $21,904 on $11,655 contributed
    Portfolio (DCA)Cash contributed
    $0$5,695$11.4k$17.1k$22.8k2017-012018-122020-112022-102024-092026-09

  5. Results

    What the numbers say

    Bitcoin’s dollar outcome depends heavily on start date. Compare the S&P 500 column before treating any number as a plan for the future.

    The chart marks portfolio value over time for fixed-amount DCA and (when shown) a same-capital lump sum. Contributed cash rises in steps; ending value is mark-to-market on the last date (2026-09-04).

  6. What changes if…

    How did we calculate this?

    • Window: real market history from our published backtest bundle, typically from 2015 through the latest Friday in the series — we do not invent older decades.
    • Contribution calendar: the engine runs on a weekly Friday grid. A “monthly” habit is converted to an equivalent weekly cash rate ((amount × 12) / 52) so the same engine can compare habits.
    • Purchase timing: each period’s contribution is applied on that week’s bar in the series (close-based weekly path), not an intraday open fill.
    • Assets: S&P 500, Bitcoin, and other series we publish — USD only. No FX conversion.
    • Shares: fractional units are assumed. No brokerage commissions, bid–ask, or slippage are modeled.
    • Dividends / income: returns follow the wealth path in the backtest bundle for that asset (not a fixed 7–10% toy rate).
    • Lump sum (when shown): the same total cash as the DCA habit, invested on day one of the window, then marked to the same path.

    Frequently asked questions

    What if I invested in Bitcoin in 2017?
    From 2017-01-06 to 2026-09-04, $100/month into Bitcoin contributed about $11,655 and a blind DCA habit ended near $68,486 (+487.6%).
    Are these numbers a forecast?
    No. They replay published market history from 2015 onward. Future returns can look nothing like this window.
    What assumptions matter most?
    Start date, contribution size, weekly vs monthly cadence, and whether you held through drawdowns. Fees and taxes are not modeled.
    Can I change the amount or start year?
    Yes — use the chips on this page when available, or open a related what-if / calculator with a different habit.
    How is this different from a 7% compound calculator?
    Fixed-rate toys assume a smooth return. We mark contributions to a real index/crypto path, including crashes in the window.
    What if I had traded instead?
    See The Boring Alternative for story-shaped counterfactuals (options losses, round-trips), then run the same dollars through an index DCA calculator.

    Run a related reality check

    Same contribution schedule, different assets — or a fixed-rate planning calculator when you want an illustration instead of history.

    S&P 500 vs BitcoinCompound interest →Boring Alternative →