PTC vs QQQ: Correlation
Measured on weekly returns over the past three years, PTC Inc. (PTC) and Invesco QQQ Trust (QQQ) carry a correlation of 0.47, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PTC and QQQ?
On 3 years of weekly data the PTC/QQQ correlation comes out at 0.47, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.27 versus 0.47 over 3 years. The 5-year figure is 0.49, and annualized covariance runs at 263.3 %².
Within PTC's tracked universe of 32 assets, QQQ comes in at #17 by 3-year correlation. Correlation aside, the last 12 months split them widely, with QQQ ahead by 52.9 points (-26.6% versus +26.3%). Do not treat this figure as fixed: across three years the rolling one-year correlation ranged all the way from 0.21 to 0.75.
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.
PTC vs QQQ: side by side
| PTC (PTC Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -26.6% | +26.3% |
| 5-year return | +20.0% | +95.4% |
| Volatility (ann.) | 28.8% | 19.6% |
| Beta vs S&P 500 | 1.02 | 1.28 |
| Max drawdown (3Y) | -48.1% | -22.8% |
| Market cap | $17.2B | – |
| P/E (trailing) | 14.7 | – |
| Dividend yield | 0.00% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | Information Technology | 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 | PTC | QQQ |
|---|---|---|
| 2022 | -0.9% | -32.6% |
| 2023 | +45.8% | +54.9% |
| 2024 | +5.1% | +25.6% |
| 2025 | -5.3% | +20.8% |
| 2026 | -8.8% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PTC and QQQ good diversifiers for each other?
Reasonably. At 0.47, PTC and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between PTC and QQQ?
Using weekly returns as of 2026-08-27: 0.47 over 3 years, with 0.27 over the last year and 0.49 over 5 years.
Is QQQ a good diversifier for PTC?
Reasonably. At 0.47, PTC and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.47 mean?
A reading of 0.47 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/ptc-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ptc-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: PTC correlations · QQQ correlations
