QUBT vs SPY: Correlation
Quantum Computing Inc. (QUBT) and SPDR S&P 500 ETF Trust (SPY) show a weak relationship: their 3-year correlation of weekly returns is 0.21.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are QUBT and SPY?
Over the past 3 years, QUBT and SPY moved with a correlation of 0.21, which is weak. Lately the two have moved closer together, with the 1-year correlation at 0.57 versus 0.21 over 3 years. Over 5 years the correlation is 0.27, and the annualized covariance of weekly returns is 483.2 %².
Out of 20 assets tracked against QUBT, SPY lands near the bottom at #16. The last year tells two different stories: SPY led by 62.2 percentage points, -41.6% for QUBT against +20.6% for SPY. Risk is not evenly split, since QUBT carries 11.1 times the volatility of the other side.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
QUBT vs SPY: side by side
| QUBT (Quantum Computing Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -41.6% | +20.6% |
| 5-year return | +13.8% | +82.4% |
| Volatility (ann.) | 160.7% | 14.5% |
| Beta vs S&P 500 | 2.31 | 1.00 |
| Max drawdown (3Y) | -82.4% | -18.8% |
| Market cap | $2.0B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | US Listed | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | QUBT | SPY |
|---|---|---|
| 2022 | -55.7% | -18.2% |
| 2023 | -39.5% | +26.2% |
| 2024 | +1712.7% | +24.9% |
| 2025 | -38.0% | +17.7% |
| 2026 | -15.7% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are QUBT and SPY good diversifiers for each other?
Reasonably. At 0.21, QUBT and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between QUBT and SPY?
As of 2026-08-27, the correlation of weekly returns between QUBT and SPY is 0.21 over 3 years, 0.57 over 1 year and 0.27 over 5 years.
Is SPY a good diversifier for QUBT?
Reasonably. At 0.21, QUBT and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.21 mean?
On the −1 to +1 scale, 0.21 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
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Related comparisons
Hubs: QUBT correlations · SPY correlations
