BELFB vs QQQ: Correlation
Bel Fuse Inc. (BELFB) and Invesco QQQ Trust (QQQ) show a moderate relationship: their 3-year correlation of weekly returns is 0.38.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BELFB and QQQ?
Across a 3-year window, the weekly returns of BELFB and QQQ correlate at 0.38, moderate. Recent behaviour matches the longer record: 0.38 over 1 year against 0.38 over 3. Stretching to 5 years gives 0.41, with an annualized covariance of 362.1 %².
Within BELFB's tracked universe of 14 assets, QQQ comes in at #7 by 3-year correlation. The last year tells two different stories: BELFB led by 57.4 percentage points, +83.7% for BELFB against +26.3% for QQQ. Note the risk asymmetry: BELFB runs 2.5 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.
BELFB vs QQQ: side by side
| BELFB (Bel Fuse Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +83.7% | +26.3% |
| 5-year return | +1827.0% | +95.4% |
| Volatility (ann.) | 49.1% | 19.6% |
| Beta vs S&P 500 | 1.30 | 1.28 |
| Max drawdown (3Y) | -33.4% | -22.8% |
| Market cap | $3.7B | – |
| P/E (trailing) | 65.2 | – |
| Dividend yield | 0.09% | 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 | BELFB | QQQ |
|---|---|---|
| 2022 | +158.7% | -32.6% |
| 2023 | +104.2% | +54.9% |
| 2024 | +24.0% | +25.6% |
| 2025 | +106.3% | +20.8% |
| 2026 | +52.0% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BELFB and QQQ good diversifiers for each other?
Reasonably. At 0.38, BELFB and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BELFB and QQQ?
As of 2026-08-27, the correlation of weekly returns between BELFB and QQQ is 0.38 over 3 years, 0.38 over 1 year and 0.41 over 5 years.
Is QQQ a good diversifier for BELFB?
Reasonably. At 0.38, BELFB and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.38 mean?
A reading of 0.38 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: BELFB correlations · QQQ correlations
