BELFA vs QQQ: Correlation
How closely do Bel Fuse Inc. (BELFA) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.36, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BELFA and QQQ?
On 3 years of weekly data the BELFA/QQQ correlation comes out at 0.36, moderate. The relationship has been stable: the 1-year correlation (0.35) sits close to the 3-year figure. The 5-year figure is 0.36, and annualized covariance runs at 345.0 %².
Out of 10 assets tracked against BELFA, QQQ lands near the bottom at #7. Correlation aside, the last 12 months split them widely, with BELFA ahead by 54.2 points (+80.5% versus +26.3%). Risk is not evenly split, since BELFA carries 2.5 times the volatility of the other side.
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.
BELFA vs QQQ: side by side
| BELFA (Bel Fuse Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +80.5% | +26.3% |
| 5-year return | +1292.5% | +95.4% |
| Volatility (ann.) | 48.6% | 19.6% |
| Beta vs S&P 500 | 1.30 | 1.28 |
| Max drawdown (3Y) | -43.4% | -22.8% |
| Market cap | $3.1B | – |
| P/E (trailing) | 54.3 | – |
| Dividend yield | 0.11% | 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 | BELFA | QQQ |
|---|---|---|
| 2022 | +117.0% | -32.6% |
| 2023 | +102.0% | +54.9% |
| 2024 | +39.8% | +25.6% |
| 2025 | +69.0% | +20.8% |
| 2026 | +40.6% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BELFA and QQQ good diversifiers for each other?
Reasonably. At 0.36, BELFA and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BELFA and QQQ?
Using weekly returns as of 2026-08-27: 0.36 over 3 years, with 0.35 over the last year and 0.36 over 5 years.
Is QQQ a good diversifier for BELFA?
Reasonably. At 0.36, BELFA and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 mean?
A reading of 0.36 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: BELFA correlations · QQQ correlations
