CII vs QQQ: Correlation
Measured on weekly returns over the past three years, BlackRock Enhanced Large Cap Core Fund, Inc. (CII) and Invesco QQQ Trust (QQQ) carry a correlation of 0.76, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CII and QQQ?
Across a 3-year window, the weekly returns of CII and QQQ correlate at 0.76, strong. Lately the two have drifted apart, with the 1-year correlation at 0.65 versus 0.76 over 3 years. Stretching to 5 years gives 0.77, with an annualized covariance of 262.4 %².
Within CII's tracked universe of 12 assets, QQQ comes in at #7 by 3-year correlation. Their 12-month results are close: +31.0% for CII against +26.3% for QQQ.
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.
CII vs QQQ: side by side
| CII (BlackRock Enhanced Large Cap Core Fund, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +31.0% | +26.3% |
| 5-year return | +85.9% | +95.4% |
| Volatility (ann.) | 17.7% | 19.6% |
| Beta vs S&P 500 | 0.97 | 1.28 |
| Max drawdown (3Y) | -21.1% | -22.8% |
| Market cap | $1.0B | – |
| P/E (trailing) | 4.8 | – |
| Dividend yield | 8.38% | 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 | CII | QQQ |
|---|---|---|
| 2022 | -13.2% | -32.6% |
| 2023 | +18.5% | +54.9% |
| 2024 | +12.7% | +25.6% |
| 2025 | +37.8% | +20.8% |
| 2026 | +11.2% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CII and QQQ good diversifiers for each other?
To a limited degree. At 0.76 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between CII and QQQ?
As of 2026-08-27, the correlation of weekly returns between CII and QQQ is 0.76 over 3 years, 0.65 over 1 year and 0.77 over 5 years.
Is QQQ a good diversifier for CII?
To a limited degree. At 0.76 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.76 mean?
A reading of 0.76 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/cii-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cii-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CII correlations · QQQ correlations
