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Your portfolio's hidden Bitcoin exposure — even if you do not own any crypto.
BTC-Beta is a portfolio's sensitivity to Bitcoin price moves, calculated the same way as traditional beta but with Bitcoin daily returns substituted for the market index. BTC-Beta of 1.5 means the portfolio moves 1.5% for every 1% Bitcoin move on average. Even portfolios with no direct crypto holdings often have meaningful BTC-Beta through tech and growth exposure.
β_BTC = Cov(Rp, R_BTC) / Var(R_BTC)βBTC = Cov(Rp, RBTC) / Var(RBTC)Identical math to traditional beta — just substitutes BTC returns for the market benchmark.
Since roughly 2020, crypto correlation has become a meaningful portfolio risk. Even portfolios with no direct crypto holdings often exhibit meaningful BTC-Beta through MSTR, COIN, semiconductor names, and growth stocks broadly. Tracking BTC-Beta is the cleanest single number for "how much hidden crypto exposure do I have?"
Over the past year, BTC daily return variance was 0.0009. Covariance of your portfolio (tech-heavy growth) with BTC was 0.00045.
BTC-Beta = 0.00045 / 0.0009 = 0.50
You move 0.5% per 1% BTC move, even if you hold no crypto. That is the indirect exposure through MSTR, NVDA, COIN, and other crypto-correlated tech.
"Good" BTC-Beta depends on whether you want crypto exposure. Below 0.1 = effectively zero exposure. 0.2–0.5 = meaningful indirect exposure typical of growth-tilted equity. Above 1.0 = direct or substantial crypto allocation.
Upload a brokerage CSV (IBKR, Schwab, Fidelity, Robinhood, Coinbase, Kraken, Binance…) and get your BTC-Beta computed on your real holdings — alongside 70+ other portfolio metrics. No signup, runs in your browser.
Open the Portfolio Beta Calculator →Crypto has become a real macro factor. Tech-heavy portfolios often correlate to BTC more than investors realize. Measuring it makes the hidden exposure visible.
MicroStrategy (MSTR), Coinbase (COIN), Marathon Digital (MARA), Riot (RIOT), Tesla, NVIDIA, and broadly the QQQ to a lesser degree.
Yes — crypto correlation regimes shift. In risk-off periods correlation rises; in risk-on periods it sometimes decouples.
Yes — alongside S&P 500 beta and VT beta in the market metrics section.
Upload your brokerage CSV — Foliolytic computes BTC-Beta plus 70+ other metrics using real historical prices, real Treasury yields, and real CPI data. Free, no signup, your data stays in your browser.
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