SPY vs TTI: Correlation
SPDR S&P 500 ETF Trust (SPY) and Tetra Technologies, Inc. (TTI) show a weak relationship: their 3-year correlation of weekly returns is 0.23.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and TTI?
Over the past 3 years, SPY and TTI moved with a correlation of 0.23, which is weak. Recent behaviour matches the longer record: 0.18 over 1 year against 0.23 over 3. Over 5 years the correlation is 0.31, and the annualized covariance of weekly returns is 200.7 %².
Within SPY's tracked universe of 4755 assets, TTI comes in at #2985 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months TTI outperformed by 33.1 percentage points (+20.6% for SPY against +53.7% for TTI). Risk is not evenly split, since TTI carries 4.1 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.
SPY vs TTI: side by side
| SPY (SPDR S&P 500 ETF Trust) | TTI (Tetra Technologies, Inc.) | |
|---|---|---|
| 1-year return | +20.6% | +53.7% |
| 5-year return | +82.4% | +123.5% |
| Volatility (ann.) | 14.5% | 59.6% |
| Beta vs S&P 500 | 1.00 | 0.96 |
| Max drawdown (3Y) | -18.8% | -67.4% |
| Market cap | – | $1.0B |
| P/E (trailing) | – | 173.2 |
| 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 | TTI |
|---|---|---|
| 2022 | -18.2% | +21.8% |
| 2023 | +26.2% | +30.6% |
| 2024 | +24.9% | -20.8% |
| 2025 | +17.7% | +161.7% |
| 2026 | +13.7% | -26.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and TTI good diversifiers for each other?
A fair diversifier. At 0.23, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between SPY and TTI?
As of 2026-08-27, the correlation of weekly returns between SPY and TTI is 0.23 over 3 years, 0.18 over 1 year and 0.31 over 5 years.
Is TTI a good diversifier for SPY?
A fair diversifier. At 0.23, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.23 mean?
On the −1 to +1 scale, 0.23 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-tti.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/spy-vs-tti/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: SPY correlations · TTI correlations
