DCA Parameters
DCA Breakdown
Growth Over Time
Portfolio value of $100.00 invested weekly into BTC vs S&P 500, compared to total capital deployed.
Methodology
Historical BTC/USD weekly closing prices sourced from Blockchain.info (Aug 2010 - Sep 2014) and Yahoo Finance (Sep 2014 - present). SPY (S&P 500 ETF) dividend- and split-adjusted prices from Yahoo Finance.
DCA simulation assumes each purchase executes at the weekly closing price on or before the scheduled purchase date. No transaction fees or taxes are included.
Annual money-weighted return (XIRR) uses each purchase date and the final valuation, on a 365-day year. Monthly purchases fall on the same calendar day each month. Contributions arrive on their scheduled dates; there is no waiting cash balance in this calculation.
SPY adjusted-price ratios approximate returns with dividends reinvested; they are not a ledger of dividend payments and share purchases. Only completed weeks are included. Both investments use the same contribution dates and final valuation date (2026-09-06), carrying the latest available stock close through the weekend.
Past performance does not guarantee future results. Bitcoin is extremely volatile and can lose 50%+ of its value in months.
See our Bitcoin Allocation Calculator for forward-looking portfolio optimization.
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