MQY vs NXP: Correlation
Blackrock MuniYield Quality Fund, Inc. (MQY) and Nuveen Select Tax Free Income Portfolio (NXP) show a strong relationship: their 3-year correlation of weekly returns is 0.63.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MQY and NXP?
Over the past 3 years, MQY and NXP moved with a correlation of 0.63, which is strong. The relationship has been stable: the 1-year correlation (0.54) sits close to the 3-year figure. Over 5 years the correlation is 0.62, and the annualized covariance of weekly returns is 73.3 %².
Within MQY's tracked universe of 27 assets, NXP comes in at #21 by 3-year correlation. Neither side won the trailing year by much: +8.0% against +6.3%.
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 NXP: side by side
| MQY (Blackrock MuniYield Quality Fund, Inc.) | NXP (Nuveen Select Tax Free Income Portfolio) | |
|---|---|---|
| 1-year return | +8.0% | +6.3% |
| 5-year return | -13.1% | +0.3% |
| Volatility (ann.) | 12.8% | 9.1% |
| Beta vs S&P 500 | 0.33 | 0.11 |
| Max drawdown (3Y) | -17.0% | -9.1% |
| Market cap | $0.8B | – |
| P/E (trailing) | 35.8 | 24.9 |
| Dividend yield | 6.25% | 4.45% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | MQY | NXP |
|---|---|---|
| 2022 | -24.2% | -9.5% |
| 2023 | +10.2% | +10.7% |
| 2024 | -0.1% | +6.9% |
| 2025 | +4.3% | -2.7% |
| 2026 | +2.4% | +3.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MQY and NXP good diversifiers for each other?
To a limited degree. At 0.63 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between MQY and NXP?
The MQY/NXP correlation stands at 0.63 on a 3-year window (1 year: 0.54, 5 years: 0.62), computed from weekly returns as of 2026-08-27.
Is NXP a good diversifier for MQY?
To a limited degree. At 0.63 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.63 mean?
A reading of 0.63 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/mqy-vs-nxp.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/mqy-vs-nxp/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: MQY correlations · NXP correlations
