BLW vs ISD: Correlation
Measured on weekly returns over the past three years, Blackrock Limited Duration Income Trust (BLW) and PGIM High Yield Bond Fund, Inc. (ISD) carry a correlation of 0.74, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BLW and ISD?
Across a 3-year window, the weekly returns of BLW and ISD correlate at 0.74, strong. The relationship has been stable: the 1-year correlation (0.71) sits close to the 3-year figure. Stretching to 5 years gives 0.78, with an annualized covariance of 92.7 %².
By 3-year correlation, ISD places #4 of the 17 assets tracked against BLW. Over the last 12 months BLW came out ahead by 6.8 percentage points (-0.2% against -7.0%).
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.
BLW vs ISD: side by side
| BLW (Blackrock Limited Duration Income Trust) | ISD (PGIM High Yield Bond Fund, Inc.) | |
|---|---|---|
| 1-year return | -0.2% | -7.0% |
| 5-year return | +16.7% | +21.1% |
| Volatility (ann.) | 9.8% | 12.7% |
| Beta vs S&P 500 | 0.38 | 0.50 |
| Max drawdown (3Y) | -11.2% | -13.9% |
| Market cap | $0.5B | $0.4B |
| P/E (trailing) | 10.4 | 10.5 |
| Dividend yield | 10.69% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BLW | ISD |
|---|---|---|
| 2022 | -15.9% | -18.4% |
| 2023 | +17.3% | +15.1% |
| 2024 | +11.1% | +22.1% |
| 2025 | +7.1% | +15.6% |
| 2026 | -0.8% | -9.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BLW and ISD good diversifiers for each other?
Only partially. A correlation of 0.74 means BLW and ISD share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between BLW and ISD?
The BLW/ISD correlation stands at 0.74 on a 3-year window (1 year: 0.71, 5 years: 0.78), computed from weekly returns as of 2026-08-27.
Is ISD a good diversifier for BLW?
Only partially. A correlation of 0.74 means BLW and ISD share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.74 mean?
On the −1 to +1 scale, 0.74 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/blw-vs-isd.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/blw-vs-isd/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BLW correlations · ISD correlations
