MBBC vs QQQ: Correlation
How closely do Marathon Bancorp, Inc. (MBBC) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of -0.03, which is near-zero.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MBBC and QQQ?
Across a 3-year window, the weekly returns of MBBC and QQQ correlate at -0.03, near zero, meaning they move largely independently. The past 12 months show a tighter link (0.08) than the 3-year average (-0.03). Stretching to 5 years gives 0.00, with an annualized covariance of -17.5 %².
Within MBBC's tracked universe of 13 assets, QQQ comes in at #8 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months MBBC outperformed by 22.0 percentage points (+48.3% for MBBC against +26.3% for QQQ). Risk is not evenly split, since MBBC carries 1.6 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.
MBBC vs QQQ: side by side
| MBBC (Marathon Bancorp, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +48.3% | +26.3% |
| 5-year return | +103.0% | +95.4% |
| Volatility (ann.) | 31.3% | 19.6% |
| Beta vs S&P 500 | -0.07 | 1.28 |
| Max drawdown (3Y) | -28.3% | -22.8% |
| Market cap | – | – |
| P/E (trailing) | 36.7 | – |
| 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 | MBBC | QQQ |
|---|---|---|
| 2022 | +4.7% | -32.6% |
| 2023 | -17.0% | +54.9% |
| 2024 | +49.9% | +25.6% |
| 2025 | +19.2% | +20.8% |
| 2026 | +26.6% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MBBC and QQQ good diversifiers for each other?
Yes: at -0.03, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between MBBC and QQQ?
The MBBC/QQQ correlation stands at -0.03 on a 3-year window (1 year: 0.08, 5 years: 0.00), computed from weekly returns as of 2026-08-27.
Is QQQ a good diversifier for MBBC?
Yes: at -0.03, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.03 mean?
A reading of -0.03 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/mbbc-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/mbbc-vs-qqq/)
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Related comparisons
Hubs: MBBC correlations · QQQ correlations
