MQY vs SBI: Correlation
Measured on weekly returns over the past three years, Blackrock MuniYield Quality Fund, Inc. (MQY) and Western Asset Intermediate Muni Fund Inc (SBI) carry a correlation of 0.82, a very strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MQY and SBI?
On 3 years of weekly data the MQY/SBI correlation comes out at 0.82, very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.80 lands near the 3-year figure. The 5-year figure is 0.74, and annualized covariance runs at 83.7 %².
Within MQY's tracked universe of 27 assets, SBI comes in at #12 by 3-year correlation. Neither side won the trailing year by much: +8.0% against +6.3%. Risk is not evenly split, since MQY 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.
MQY vs SBI: side by side
| MQY (Blackrock MuniYield Quality Fund, Inc.) | SBI (Western Asset Intermediate Muni Fund Inc) | |
|---|---|---|
| 1-year return | +8.0% | +6.3% |
| 5-year return | -13.1% | +0.9% |
| Volatility (ann.) | 12.8% | 7.9% |
| Beta vs S&P 500 | 0.33 | 0.19 |
| Max drawdown (3Y) | -17.0% | -7.9% |
| Market cap | $0.8B | $0.1B |
| P/E (trailing) | 35.8 | 12.5 |
| Dividend yield | 6.25% | 3.31% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | MQY | SBI |
|---|---|---|
| 2022 | -24.2% | -18.4% |
| 2023 | +10.2% | +5.4% |
| 2024 | -0.1% | +6.8% |
| 2025 | +4.3% | +5.9% |
| 2026 | +2.4% | +3.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MQY and SBI good diversifiers for each other?
Not really. At 0.82, the two trade almost as one position, and owning both buys little extra protection.
FAQ
What is the correlation between MQY and SBI?
Using weekly returns as of 2026-08-27: 0.82 over 3 years, with 0.80 over the last year and 0.74 over 5 years.
Is SBI a good diversifier for MQY?
Not really. At 0.82, the two trade almost as one position, and owning both buys little extra protection.
What does a correlation of 0.82 mean?
On the −1 to +1 scale, 0.82 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
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Related comparisons
Hubs: MQY correlations · SBI correlations
