SPY vs TTD: Correlation
Measured on weekly returns over the past three years, SPDR S&P 500 ETF Trust (SPY) and Trade Desk (The) (TTD) carry a correlation of 0.29, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and TTD?
Across a 3-year window, the weekly returns of SPY and TTD correlate at 0.29, weak. The past 12 months show a weaker link (0.12) than the 3-year average (0.29). Stretching to 5 years gives 0.39, with an annualized covariance of 257.7 %².
Among the 4755 assets we track against SPY, TTD ranks #2364 by 3-year correlation. Correlation aside, the last 12 months split them widely, with SPY ahead by 95.1 points (+20.6% versus -74.5%). Do not treat this figure as fixed: across three years the rolling one-year correlation ranged all the way from 0.07 to 0.65. Note the risk asymmetry: TTD runs 4.2 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 TTD: side by side
| SPY (SPDR S&P 500 ETF Trust) | TTD (Trade Desk (The)) | |
|---|---|---|
| 1-year return | +20.6% | -74.5% |
| 5-year return | +82.4% | -83.4% |
| Volatility (ann.) | 14.5% | 60.7% |
| Beta vs S&P 500 | 1.00 | 1.23 |
| Max drawdown (3Y) | -18.8% | -90.7% |
| Market cap | – | $6.3B |
| P/E (trailing) | – | 15.4 |
| Dividend yield | 1.01% | 0.00% |
| Expense ratio | 0.09% | – |
| Assets under management | $795.3B | – |
| Sector / category | ETF · US Large Cap | Communication Services |
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 | TTD |
|---|---|---|
| 2022 | -18.2% | -51.1% |
| 2023 | +26.2% | +60.5% |
| 2024 | +24.9% | +63.3% |
| 2025 | +17.7% | -67.7% |
| 2026 | +13.7% | -64.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and TTD good diversifiers for each other?
A fair diversifier. At 0.29, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between SPY and TTD?
The SPY/TTD correlation stands at 0.29 on a 3-year window (1 year: 0.12, 5 years: 0.39), computed from weekly returns as of 2026-08-27.
Is TTD a good diversifier for SPY?
A fair diversifier. At 0.29, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.29 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/spy-vs-ttd.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/spy-vs-ttd/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: SPY correlations · TTD correlations
