SPY vs STRT: Correlation
Measured on weekly returns over the past three years, SPDR S&P 500 ETF Trust (SPY) and STRATTEC SECURITY CORPORATION (STRT) carry a correlation of 0.30, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and STRT?
Over the past 3 years, SPY and STRT moved with a correlation of 0.30, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.08 versus 0.30 over 3 years. Over 5 years the correlation is 0.23, and the annualized covariance of weekly returns is 239.9 %².
By 3-year correlation, STRT places #2243 of the 4755 assets tracked against SPY. Their recent paths diverged sharply: over the last 12 months SPY outperformed by 15.4 percentage points (+20.6% for SPY against +5.2% for STRT). Note the risk asymmetry: STRT runs 3.9 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 STRT: side by side
| SPY (SPDR S&P 500 ETF Trust) | STRT (STRATTEC SECURITY CORPORATION) | |
|---|---|---|
| 1-year return | +20.6% | +5.2% |
| 5-year return | +82.4% | +89.4% |
| Volatility (ann.) | 14.5% | 56.1% |
| Beta vs S&P 500 | 1.00 | 1.15 |
| Max drawdown (3Y) | -18.8% | -36.8% |
| Market cap | – | $0.3B |
| P/E (trailing) | – | 14.6 |
| Dividend yield | 1.01% | 0.00% |
| Expense ratio | 0.09% | – |
| Assets under management | $795.3B | – |
| Sector / category | ETF · US Large Cap | US Listed |
SPY, State Street Investment Management's Large Blend fund, carries $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | SPY | STRT |
|---|---|---|
| 2022 | -18.2% | -44.5% |
| 2023 | +26.2% | +23.3% |
| 2024 | +24.9% | +62.6% |
| 2025 | +17.7% | +84.8% |
| 2026 | +13.7% | -7.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and STRT good diversifiers for each other?
A fair diversifier. At 0.30, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between SPY and STRT?
The SPY/STRT correlation stands at 0.30 on a 3-year window (1 year: 0.08, 5 years: 0.23), computed from weekly returns as of 2026-08-27.
Is STRT a good diversifier for SPY?
A fair diversifier. At 0.30, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.30 mean?
A reading of 0.30 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
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Embed this badge (it refreshes with the data), with attribution:
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Related comparisons
Hubs: SPY correlations · STRT correlations
