ISRG vs QQQ: Correlation
Measured on weekly returns over the past three years, Intuitive Surgical (ISRG) and Invesco QQQ Trust (QQQ) carry a correlation of 0.54, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ISRG and QQQ?
Over the past 3 years, ISRG and QQQ moved with a correlation of 0.54, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.36 versus 0.54 over 3 years. Over 5 years the correlation is 0.63, and the annualized covariance of weekly returns is 326.4 %².
Within ISRG's tracked universe of 36 assets, QQQ comes in at #11 by 3-year correlation. The last year tells two different stories: QQQ led by 48.4 percentage points, -22.1% for ISRG against +26.3% for QQQ. This link changes with the market regime, having swung between 0.22 and 0.73 on a rolling one-year basis. One caveat on sizing: ISRG is 1.6 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.
ISRG vs QQQ: side by side
| ISRG (Intuitive Surgical) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -22.1% | +26.3% |
| 5-year return | +4.0% | +95.4% |
| Volatility (ann.) | 31.1% | 19.6% |
| Beta vs S&P 500 | 1.20 | 1.28 |
| Max drawdown (3Y) | -45.6% | -22.8% |
| Market cap | $131.5B | – |
| P/E (trailing) | 42.5 | – |
| Dividend yield | 0.00% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | Health Care | 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 | ISRG | QQQ |
|---|---|---|
| 2022 | -26.1% | -32.6% |
| 2023 | +27.1% | +54.9% |
| 2024 | +54.7% | +25.6% |
| 2025 | +8.5% | +20.8% |
| 2026 | -35.2% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
ISRG represents 0.58% of QQQ's portfolio, so part of any move in QQQ is ISRG itself, and the correlation between them is partly mechanical.
Are ISRG and QQQ good diversifiers for each other?
To a limited degree. At 0.54 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 ISRG and QQQ?
As of 2026-08-27, the correlation of weekly returns between ISRG and QQQ is 0.54 over 3 years, 0.36 over 1 year and 0.63 over 5 years.
Is QQQ a good diversifier for ISRG?
To a limited degree. At 0.54 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 0.54 mean?
A reading of 0.54 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/isrg-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/isrg-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ISRG correlations · QQQ correlations
