HSTM vs QQQ: Correlation
How closely do HealthStream, Inc. (HSTM) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.25, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are HSTM and QQQ?
Across a 3-year window, the weekly returns of HSTM and QQQ correlate at 0.25, weak. The relationship has been stable: the 1-year correlation (0.20) sits close to the 3-year figure. Stretching to 5 years gives 0.31, with an annualized covariance of 136.2 %².
QQQ is close to the least connected end of HSTM's tracked universe, ranking #9 of 13. Correlation aside, the last 12 months split them widely, with QQQ ahead by 24.1 points (+2.2% versus +26.3%).
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.
HSTM vs QQQ: side by side
| HSTM (HealthStream, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +2.2% | +26.3% |
| 5-year return | -1.6% | +95.4% |
| Volatility (ann.) | 27.4% | 19.6% |
| Beta vs S&P 500 | 0.54 | 1.28 |
| Max drawdown (3Y) | -41.4% | -22.8% |
| Market cap | $0.8B | – |
| P/E (trailing) | 40.0 | – |
| Dividend yield | 0.46% | 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 | HSTM | QQQ |
|---|---|---|
| 2022 | -5.8% | -32.6% |
| 2023 | +9.3% | +54.9% |
| 2024 | +18.1% | +25.6% |
| 2025 | -27.1% | +20.8% |
| 2026 | +25.5% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are HSTM and QQQ good diversifiers for each other?
Reasonably. At 0.25, HSTM and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between HSTM and QQQ?
As of 2026-08-27, the correlation of weekly returns between HSTM and QQQ is 0.25 over 3 years, 0.20 over 1 year and 0.31 over 5 years.
Is QQQ a good diversifier for HSTM?
Reasonably. At 0.25, HSTM and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.25 mean?
A reading of 0.25 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/hstm-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/hstm-vs-qqq/)
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Related comparisons
Hubs: HSTM correlations · QQQ correlations
