IEX vs QQQ: Correlation
IDEX Corporation (IEX) and Invesco QQQ Trust (QQQ) show a moderate relationship: their 3-year correlation of weekly returns is 0.43.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IEX and QQQ?
Across a 3-year window, the weekly returns of IEX and QQQ correlate at 0.43, moderate. The past 12 months show a weaker link (0.24) than the 3-year average (0.43). Stretching to 5 years gives 0.49, with an annualized covariance of 196.8 %².
By 3-year correlation, QQQ places #30 of the 40 assets tracked against IEX. The last year tells two different stories: IEX led by 16.7 percentage points, +43.0% for IEX against +26.3% for QQQ. Across three years, the rolling one-year figure varied moderately, from 0.21 to 0.63.
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.
IEX vs QQQ: side by side
| IEX (IDEX Corporation) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +43.0% | +26.3% |
| 5-year return | +10.5% | +95.4% |
| Volatility (ann.) | 23.3% | 19.6% |
| Beta vs S&P 500 | 0.89 | 1.28 |
| Max drawdown (3Y) | -34.6% | -22.8% |
| Market cap | $17.2B | – |
| P/E (trailing) | 33.8 | – |
| Dividend yield | 1.23% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | Industrials | 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 | IEX | QQQ |
|---|---|---|
| 2022 | -2.2% | -32.6% |
| 2023 | -3.8% | +54.9% |
| 2024 | -2.4% | +25.6% |
| 2025 | -13.7% | +20.8% |
| 2026 | +32.9% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IEX and QQQ good diversifiers for each other?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between IEX and QQQ?
Using weekly returns as of 2026-08-27: 0.43 over 3 years, with 0.24 over the last year and 0.49 over 5 years.
Is QQQ a good diversifier for IEX?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.43 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/iex-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/iex-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: IEX correlations · QQQ correlations
