QQQ vs STIM: Correlation
How closely do Invesco QQQ Trust (QQQ) and Neuronetics, Inc. (STIM) trade together? Their weekly returns over three years give a correlation of 0.24, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are QQQ and STIM?
On 3 years of weekly data the QQQ/STIM correlation comes out at 0.24, weak. Lately the two have moved closer together, with the 1-year correlation at 0.34 versus 0.24 over 3 years. The 5-year figure is 0.27, and annualized covariance runs at 510.6 %².
Within QQQ's tracked universe of 4755 assets, STIM comes in at #2318 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 38.2 percentage points (+26.3% for QQQ against -11.9% for STIM). One caveat on sizing: STIM is 5.6 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.
QQQ vs STIM: side by side
| QQQ (Invesco QQQ Trust) | STIM (Neuronetics, Inc.) | |
|---|---|---|
| 1-year return | +26.3% | -11.9% |
| 5-year return | +95.4% | -54.7% |
| Volatility (ann.) | 19.6% | 109.2% |
| Beta vs S&P 500 | 1.28 | 1.83 |
| Max drawdown (3Y) | -22.8% | -87.3% |
| Market cap | – | $0.2B |
| P/E (trailing) | – | – |
| Dividend yield | 0.44% | 0.00% |
| Expense ratio | 0.18% | – |
| Assets under management | $452.8B | – |
| Sector / category | ETF · US Growth & Tech | US Listed |
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 | QQQ | STIM |
|---|---|---|
| 2022 | -32.6% | +54.0% |
| 2023 | +54.9% | -57.8% |
| 2024 | +25.6% | -44.5% |
| 2025 | +20.8% | -14.3% |
| 2026 | +17.7% | +114.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are QQQ and STIM good diversifiers for each other?
A fair diversifier. At 0.24, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between QQQ and STIM?
Using weekly returns as of 2026-08-27: 0.24 over 3 years, with 0.34 over the last year and 0.27 over 5 years.
Is STIM a good diversifier for QQQ?
A fair diversifier. At 0.24, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.24 mean?
A reading of 0.24 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
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Related comparisons
Hubs: QQQ correlations · STIM correlations
