ESE vs QQQ: Correlation
Measured on weekly returns over the past three years, ESCO Technologies Inc. (ESE) and Invesco QQQ Trust (QQQ) carry a correlation of 0.32, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ESE and QQQ?
Across a 3-year window, the weekly returns of ESE and QQQ correlate at 0.32, moderate. The past 12 months show a weaker link (0.08) than the 3-year average (0.32). Stretching to 5 years gives 0.41, with an annualized covariance of 184.5 %².
Out of 11 assets tracked against ESE, QQQ lands near the bottom at #8. Correlation aside, the last 12 months split them widely, with ESE ahead by 15.7 points (+42.0% versus +26.3%). One caveat on sizing: ESE is 1.5 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.
ESE vs QQQ: side by side
| ESE (ESCO Technologies Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +42.0% | +26.3% |
| 5-year return | +214.2% | +95.4% |
| Volatility (ann.) | 29.6% | 19.6% |
| Beta vs S&P 500 | 0.79 | 1.28 |
| Max drawdown (3Y) | -22.3% | -22.8% |
| Market cap | $7.3B | – |
| P/E (trailing) | 52.3 | – |
| Dividend yield | 0.11% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | US Listed | ETF · US Growth & Tech |
QQQ is a Large Growth fund from Invesco: $452.8B under management, 104 holdings, a 0.18% expense ratio, a 0.44% trailing dividend yield.
Year-by-year returns
| Year | ESE | QQQ |
|---|---|---|
| 2022 | -2.3% | -32.6% |
| 2023 | +34.1% | +54.9% |
| 2024 | +14.1% | +25.6% |
| 2025 | +47.0% | +20.8% |
| 2026 | +44.2% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ESE and QQQ good diversifiers for each other?
Reasonably. At 0.32, ESE and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between ESE and QQQ?
As of 2026-08-27, the correlation of weekly returns between ESE and QQQ is 0.32 over 3 years, 0.08 over 1 year and 0.41 over 5 years.
Is QQQ a good diversifier for ESE?
Reasonably. At 0.32, ESE and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.32 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/ese-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ese-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ESE correlations · QQQ correlations
