SPY vs TAYD: Correlation
Measured on weekly returns over the past three years, SPDR S&P 500 ETF Trust (SPY) and Taylor Devices, Inc. (TAYD) carry a correlation of 0.15, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and TAYD?
Over the past 3 years, SPY and TAYD moved with a correlation of 0.15, which is weak. The past 12 months show a weaker link (-0.20) than the 3-year average (0.15). Over 5 years the correlation is 0.17, and the annualized covariance of weekly returns is 123.1 %².
Within SPY's tracked universe of 4755 assets, TAYD comes in at #3740 by 3-year correlation. The trailing year gives TAYD the advantage: +20.6% versus +26.6%, a 6.0-point spread. One caveat on sizing: TAYD is 3.8 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 TAYD: side by side
| SPY (SPDR S&P 500 ETF Trust) | TAYD (Taylor Devices, Inc.) | |
|---|---|---|
| 1-year return | +20.6% | +26.6% |
| 5-year return | +82.4% | +405.0% |
| Volatility (ann.) | 14.5% | 55.2% |
| Beta vs S&P 500 | 1.00 | 0.59 |
| Max drawdown (3Y) | -18.8% | -52.7% |
| Market cap | – | $0.2B |
| P/E (trailing) | – | 23.2 |
| 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 | TAYD |
|---|---|---|
| 2022 | -18.2% | +29.9% |
| 2023 | +26.2% | +56.0% |
| 2024 | +24.9% | +88.1% |
| 2025 | +17.7% | +40.5% |
| 2026 | +13.7% | +4.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and TAYD good diversifiers for each other?
Yes: at 0.15, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between SPY and TAYD?
Using weekly returns as of 2026-08-27: 0.15 over 3 years, with -0.20 over the last year and 0.17 over 5 years.
Is TAYD a good diversifier for SPY?
Yes: at 0.15, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of 0.15 mean?
On the −1 to +1 scale, 0.15 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-tayd.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/spy-vs-tayd/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: SPY correlations · TAYD correlations
