SPY vs UUU: Correlation
SPDR S&P 500 ETF Trust (SPY) and Universal Safety Products, Inc. (UUU) show a near-zero relationship: their 3-year correlation of weekly returns is -0.06.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and UUU?
On 3 years of weekly data the SPY/UUU correlation comes out at -0.06, near zero, meaning they move largely independently. Recent behaviour matches the longer record: -0.04 over 1 year against -0.06 over 3. The 5-year figure is 0.04, and annualized covariance runs at -112.5 %².
Within SPY's tracked universe of 4755 assets, UUU comes in at #4709 by 3-year correlation. Correlation aside, the last 12 months split them widely, with UUU ahead by 63.5 points (+20.6% versus +84.1%). One caveat on sizing: UUU is 8.5 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
SPY vs UUU: side by side
| SPY (SPDR S&P 500 ETF Trust) | UUU (Universal Safety Products, Inc.) | |
|---|---|---|
| 1-year return | +20.6% | +84.1% |
| 5-year return | +82.4% | +5.9% |
| Volatility (ann.) | 14.5% | 122.8% |
| Beta vs S&P 500 | 1.00 | -0.54 |
| Max drawdown (3Y) | -18.8% | -77.3% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 1.01% | 0.00% |
| Expense ratio | 0.09% | – |
| Assets under management | $795.3B | – |
| Sector / category | ETF · US Large Cap | US Listed |
On the fund side, SPY sits in the Large Blend category at State Street Investment Management, with $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | SPY | UUU |
|---|---|---|
| 2022 | -18.2% | -40.3% |
| 2023 | +26.2% | -18.2% |
| 2024 | +24.9% | +42.8% |
| 2025 | +17.7% | +158.6% |
| 2026 | +13.7% | +2.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and UUU good diversifiers for each other?
Yes. With a correlation of -0.06, SPY and UUU have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between SPY and UUU?
Using weekly returns as of 2026-08-27: -0.06 over 3 years, with -0.04 over the last year and 0.04 over 5 years.
Is UUU a good diversifier for SPY?
Yes. With a correlation of -0.06, SPY and UUU have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.06 mean?
On the −1 to +1 scale, -0.06 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/spy-vs-uuu.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/spy-vs-uuu/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: SPY correlations · UUU correlations
