OSIS vs QQQ: Correlation
How closely do OSI Systems, Inc. (OSIS) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.45, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OSIS and QQQ?
Over the past 3 years, OSIS and QQQ moved with a correlation of 0.45, which is moderate. The past 12 months show a weaker link (0.29) than the 3-year average (0.45). Over 5 years the correlation is 0.46, and the annualized covariance of weekly returns is 334.6 %².
QQQ is close to the least connected end of OSIS's tracked universe, ranking #8 of 12. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 34.8 percentage points (-8.5% for OSIS against +26.3% for QQQ). Risk is not evenly split, since OSIS carries 1.9 times the volatility of the other side.
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.
OSIS vs QQQ: side by side
| OSIS (OSI Systems, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -8.5% | +26.3% |
| 5-year return | +113.6% | +95.4% |
| Volatility (ann.) | 38.1% | 19.6% |
| Beta vs S&P 500 | 1.39 | 1.28 |
| Max drawdown (3Y) | -36.2% | -22.8% |
| Market cap | $3.4B | – |
| P/E (trailing) | 23.6 | – |
| Dividend yield | 0.00% | 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 | OSIS | QQQ |
|---|---|---|
| 2022 | -14.7% | -32.6% |
| 2023 | +62.3% | +54.9% |
| 2024 | +29.7% | +25.6% |
| 2025 | +52.3% | +20.8% |
| 2026 | -17.3% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OSIS and QQQ good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.45 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between OSIS and QQQ?
The OSIS/QQQ correlation stands at 0.45 on a 3-year window (1 year: 0.29, 5 years: 0.46), computed from weekly returns as of 2026-08-27.
Is QQQ a good diversifier for OSIS?
Yes, to a useful degree: a correlation of 0.45 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.45 mean?
On the −1 to +1 scale, 0.45 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/osis-vs-qqq.json
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Related comparisons
Hubs: OSIS correlations · QQQ correlations
