Is Bitcoin a Risk Asset That Moves with Stocks?
Learn to assess Bitcoin-stock correlations using consistent periods, observation times, and currencies. Explore joint risk-asset losses, won-denominated returns, and differences between spot holdings and ETPs.
Bitcoin has moved alongside stocks during some periods, but that relationship is not constant. Separate common factors such as liquidity and risk appetite from crypto-specific events. Rather than classifying it as a safe haven or a definitive leading indicator for stocks solely because its current price is rising, compare returns on a consistent basis and examine loss episodes.
Examine return co-movement rather than the shape of price charts
A chart showing Bitcoin and stock index levels both trending upward is not enough to assess diversification. Calculate returns at the same frequency and specify the observation period. Bitcoin's trading hours differ from those of stock markets, so comparisons can change depending on where you define the end of each day. Also record how weekend movements are linked to Monday's stock returns. Correlations calculated over short periods are highly sensitive to specific events, and a high correlation alone does not show that one asset caused the other to move.
Test diversification during losses rather than only in calm markets
Past IMF research shows that links between crypto assets and stocks increased during certain periods. This is different from claiming that the current correlation is fixed. In a portfolio, examine separately whether Bitcoin falls alongside stocks during sharp equity declines and how large its losses are. Even if normal-period correlation is low, losses can overlap if many participants withdraw capital from both during a crisis. Rather than assuming a defensive role based on gold-related nicknames or technological characteristics, check actual loss data over the investment horizon and the size of the allocation.
Separate trading-currency effects from investment-vehicle differences
Even if Bitcoin rises in dollar terms, a stronger won against the dollar can reduce the won-translated return. Korean exchange prices can also be affected by local supply and demand and trading costs, so distinguish a simple currency conversion from actual execution prices. Holding spot Bitcoin directly also differs from owning an ETP that provides Bitcoin price exposure. ETPs involve costs and tracking differences, while spot trading involves custody and exchange-related risks. Do not assume that product structures described in US investor guidance are identical to Korean exchange arrangements or protections in other jurisdictions.
Worked example
Hypothetical example: Suppose Bitcoin rises 10% in dollar terms while USD/KRW falls 5% over the same period. Excluding local price differences and costs, the won-translated return is 1.10×0.95-1=4.5%. If a portfolio is 80% stocks and 20% Bitcoin, and they fall 10% and 30%, respectively, over one period, the simple weighted loss is 0.8×10%+0.2×30%=14%. Having two asset names provides limited protection if both fall at the same time.
What to check
- Compare returns at the same frequency rather than price levels.
- Record time zones and how weekend movements are handled.
- Do not substitute coefficients from past research for current correlations.
- Distinguish won-conversion effects from structural differences between spot holdings and ETPs.
Sources and primary materials
This is educational material about research methods. For an actual company decision, verify the filings and primary sources for the relevant period.