BLW vs JLS: Correlation
Blackrock Limited Duration Income Trust (BLW) and Nuveen Mortgage and Income Fund (JLS) show a strong relationship: their 3-year correlation of weekly returns is 0.60.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BLW and JLS?
On 3 years of weekly data the BLW/JLS correlation comes out at 0.60, strong. The past 12 months show a weaker link (0.49) than the 3-year average (0.60). The 5-year figure is 0.56, and annualized covariance runs at 59.7 %².
Within BLW's tracked universe of 17 assets, JLS comes in at #10 by 3-year correlation. Their 12-month results are close: -0.2% for BLW against -0.4% for JLS.
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 JLS: side by side
| BLW (Blackrock Limited Duration Income Trust) | JLS (Nuveen Mortgage and Income Fund) | |
|---|---|---|
| 1-year return | -0.2% | -0.4% |
| 5-year return | +16.7% | +25.5% |
| Volatility (ann.) | 9.8% | 10.1% |
| Beta vs S&P 500 | 0.38 | 0.31 |
| Max drawdown (3Y) | -11.2% | -9.3% |
| Market cap | $0.5B | $0.1B |
| P/E (trailing) | 10.4 | 9.7 |
| Dividend yield | 10.69% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BLW | JLS |
|---|---|---|
| 2022 | -15.9% | -17.9% |
| 2023 | +17.3% | +14.9% |
| 2024 | +11.1% | +17.9% |
| 2025 | +7.1% | +11.6% |
| 2026 | -0.8% | -0.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BLW and JLS good diversifiers for each other?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between BLW and JLS?
The BLW/JLS correlation stands at 0.60 on a 3-year window (1 year: 0.49, 5 years: 0.56), computed from weekly returns as of 2026-08-27.
Is JLS a good diversifier for BLW?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.60 mean?
On the −1 to +1 scale, 0.60 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-jls.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/blw-vs-jls/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BLW correlations · JLS correlations
