PSA vs QQQ: Correlation
How closely do Public Storage (PSA) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.27, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PSA and QQQ?
Over the past 3 years, PSA and QQQ moved with a correlation of 0.27, which is weak. Little has changed lately, as the 1-year reading of 0.21 lands near the 3-year figure. Over 5 years the correlation is 0.44, and the annualized covariance of weekly returns is 122.0 %².
By 3-year correlation, QQQ places #23 of the 33 assets tracked against PSA. Correlation aside, the last 12 months split them widely, with QQQ ahead by 15.0 points (+11.3% versus +26.3%). This link changes with the market regime, having swung between 0.07 and 0.71 on a rolling one-year basis.
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.
PSA vs QQQ: side by side
| PSA (Public Storage) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +11.3% | +26.3% |
| 5-year return | +20.9% | +95.4% |
| Volatility (ann.) | 23.0% | 19.6% |
| Beta vs S&P 500 | 0.59 | 1.28 |
| Max drawdown (3Y) | -25.6% | -22.8% |
| Market cap | $58.1B | – |
| P/E (trailing) | 30.3 | – |
| Dividend yield | 3.78% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | Real Estate | 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 | PSA | QQQ |
|---|---|---|
| 2022 | -20.2% | -32.6% |
| 2023 | +13.6% | +54.9% |
| 2024 | +2.1% | +25.6% |
| 2025 | -9.7% | +20.8% |
| 2026 | +22.3% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PSA and QQQ good diversifiers for each other?
A fair diversifier. At 0.27, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between PSA and QQQ?
Using weekly returns as of 2026-08-27: 0.27 over 3 years, with 0.21 over the last year and 0.44 over 5 years.
Is QQQ a good diversifier for PSA?
A fair diversifier. At 0.27, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.27 mean?
A reading of 0.27 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/psa-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/psa-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: PSA correlations · QQQ correlations
