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ACH vs QQQ: Correlation

How closely do Accendra Health, Inc. (ACH) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.13, which is weak.

Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology

Correlation (3Y)
0.13
weak
Correlation (1Y)
0.14
last 12 months
Correlation (5Y)
0.22
long-run
Ann. covariance
218.5
%² · weekly, annualized

How correlated are ACH and QQQ?

On 3 years of weekly data the ACH/QQQ correlation comes out at 0.13, weak. The relationship has been stable: the 1-year correlation (0.14) sits close to the 3-year figure. The 5-year figure is 0.22, and annualized covariance runs at 218.5 %².

Within ACH's tracked universe of 16 assets, QQQ comes in at #7 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 101.6 percentage points (-75.3% for ACH against +26.3% for QQQ). One caveat on sizing: ACH is 4.5 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.

ACH vs QQQ: side by side

ACH (Accendra Health, Inc.)QQQ (Invesco QQQ Trust)
1-year return-75.3%+26.3%
5-year return-96.8%+95.4%
Volatility (ann.)89.1%19.6%
Beta vs S&P 5001.371.28
Max drawdown (3Y)-96.6%-22.8%
Market cap$0.1B
P/E (trailing)
Dividend yield0.00%0.44%
Expense ratio0.18%
Assets under management$452.8B
Sector / categoryUS ListedETF · US Growth & Tech
Higher yield: QQQ 0.44% vs 0.00%Smaller drawdown: QQQ -22.8% vs -96.6%Higher 5y return: QQQ +95.4% vs -96.8%

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.

-83%0%+29%2025-09-052026-08-27
Twelve months of weekly closes, each series rebased to 100. ACH · QQQ

Year-by-year returns

YearACHQQQ
2022-55.1%-32.6%
2023-1.3%+54.9%
2024-32.2%+25.6%
2025-78.6%+20.8%
2026-56.8%+17.7%

Calendar-year price returns; the current year is year-to-date as of the data date above.

Are ACH and QQQ good diversifiers for each other?

By historical standards, yes. A correlation of 0.13 means the two rarely move for the same reasons.

FAQ

What is the correlation between ACH and QQQ?

Using weekly returns as of 2026-08-27: 0.13 over 3 years, with 0.14 over the last year and 0.22 over 5 years.

Is QQQ a good diversifier for ACH?

By historical standards, yes. A correlation of 0.13 means the two rarely move for the same reasons.

What does a correlation of 0.13 mean?

On the −1 to +1 scale, 0.13 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.

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ACH vs QQQ: 3-year weekly correlation 0.13ACH vs QQQ0.13

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Hubs: ACH correlations · QQQ correlations