ECL vs QQQ: Correlation
How closely do Ecolab (ECL) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.36, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ECL and QQQ?
Across a 3-year window, the weekly returns of ECL and QQQ correlate at 0.36, moderate. The past 12 months show a weaker link (0.00) than the 3-year average (0.36). Stretching to 5 years gives 0.56, with an annualized covariance of 137.8 %².
Within ECL's tracked universe of 53 assets, QQQ comes in at #43 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 23.2 percentage points (+3.1% for ECL against +26.3% for QQQ). Do not treat this figure as fixed: across three years the rolling one-year correlation ranged all the way from 0.02 to 0.66.
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.
ECL vs QQQ: side by side
| ECL (Ecolab) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +3.1% | +26.3% |
| 5-year return | +34.0% | +95.4% |
| Volatility (ann.) | 19.5% | 19.6% |
| Beta vs S&P 500 | 0.64 | 1.28 |
| Max drawdown (3Y) | -20.1% | -22.8% |
| Market cap | $80.1B | – |
| P/E (trailing) | 39.1 | – |
| Dividend yield | 0.98% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | Materials | 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 | ECL | QQQ |
|---|---|---|
| 2022 | -37.1% | -32.6% |
| 2023 | +37.9% | +54.9% |
| 2024 | +19.3% | +25.6% |
| 2025 | +13.2% | +20.8% |
| 2026 | +9.5% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ECL and QQQ good diversifiers for each other?
Reasonably. At 0.36, ECL and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between ECL and QQQ?
Using weekly returns as of 2026-08-27: 0.36 over 3 years, with 0.00 over the last year and 0.56 over 5 years.
Is QQQ a good diversifier for ECL?
Reasonably. At 0.36, ECL and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 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/ecl-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ecl-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ECL correlations · QQQ correlations
