PLRX vs QQQ: Correlation
How closely do Pliant Therapeutics, Inc. (PLRX) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.18, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PLRX and QQQ?
Across a 3-year window, the weekly returns of PLRX and QQQ correlate at 0.18, weak. The relationship has been stable: the 1-year correlation (0.22) sits close to the 3-year figure. Stretching to 5 years gives 0.15, with an annualized covariance of 268.1 %².
By 3-year correlation, QQQ places #9 of the 17 assets tracked against PLRX. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 58.3 percentage points (-32.0% for PLRX against +26.3% for QQQ). Note the risk asymmetry: PLRX runs 3.8 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
PLRX vs QQQ: side by side
| PLRX (Pliant Therapeutics, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -32.0% | +26.3% |
| 5-year return | -93.6% | +95.4% |
| Volatility (ann.) | 74.8% | 19.6% |
| Beta vs S&P 500 | 1.32 | 1.28 |
| Max drawdown (3Y) | -94.7% | -22.8% |
| Market cap | $0.1B | – |
| P/E (trailing) | – | – |
| 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 | PLRX | QQQ |
|---|---|---|
| 2022 | +43.2% | -32.6% |
| 2023 | -6.3% | +54.9% |
| 2024 | -27.3% | +25.6% |
| 2025 | -90.7% | +20.8% |
| 2026 | -5.7% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PLRX and QQQ good diversifiers for each other?
By historical standards, yes. A correlation of 0.18 means the two rarely move for the same reasons.
FAQ
What is the correlation between PLRX and QQQ?
As of 2026-08-27, the correlation of weekly returns between PLRX and QQQ is 0.18 over 3 years, 0.22 over 1 year and 0.15 over 5 years.
Is QQQ a good diversifier for PLRX?
By historical standards, yes. A correlation of 0.18 means the two rarely move for the same reasons.
What does a correlation of 0.18 mean?
A reading of 0.18 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/plrx-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/plrx-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: PLRX correlations · QQQ correlations
