QQQ vs TDY: Correlation
Measured on weekly returns over the past three years, Invesco QQQ Trust (QQQ) and Teledyne Technologies (TDY) carry a correlation of 0.39, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are QQQ and TDY?
Across a 3-year window, the weekly returns of QQQ and TDY correlate at 0.39, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.26 versus 0.39 over 3 years. Stretching to 5 years gives 0.49, with an annualized covariance of 165.6 %².
Within QQQ's tracked universe of 4755 assets, TDY comes in at #724 by 3-year correlation. The trailing year gives QQQ the advantage: +26.3% versus +15.7%, a 10.6-point spread. On a rolling one-year basis the correlation drifted between 0.12 and 0.60, a moderate band.
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.
QQQ vs TDY: side by side
| QQQ (Invesco QQQ Trust) | TDY (Teledyne Technologies) | |
|---|---|---|
| 1-year return | +26.3% | +15.7% |
| 5-year return | +95.4% | +36.5% |
| Volatility (ann.) | 19.6% | 22.0% |
| Beta vs S&P 500 | 1.28 | 0.76 |
| Max drawdown (3Y) | -22.8% | -18.8% |
| Market cap | – | $29.0B |
| P/E (trailing) | – | 30.7 |
| Dividend yield | 0.44% | 0.00% |
| Expense ratio | 0.18% | – |
| Assets under management | $452.8B | – |
| Sector / category | ETF · US Growth & Tech | Information Technology |
On the fund side, QQQ sits in the Large Growth category at Invesco, with $452.8B under management, 104 holdings, a 0.18% expense ratio, a 0.44% trailing dividend yield.
Year-by-year returns
| Year | QQQ | TDY |
|---|---|---|
| 2022 | -32.6% | -8.5% |
| 2023 | +54.9% | +11.6% |
| 2024 | +25.6% | +4.0% |
| 2025 | +20.8% | +10.0% |
| 2026 | +17.7% | +22.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are QQQ and TDY good diversifiers for each other?
Reasonably. At 0.39, QQQ and TDY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between QQQ and TDY?
Using weekly returns as of 2026-08-27: 0.39 over 3 years, with 0.26 over the last year and 0.49 over 5 years.
Is TDY a good diversifier for QQQ?
Reasonably. At 0.39, QQQ and TDY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.39 mean?
On the −1 to +1 scale, 0.39 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/qqq-vs-tdy.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/qqq-vs-tdy/)
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Related comparisons
Hubs: QQQ correlations · TDY correlations
