BCSF vs FDUS: Correlation
How closely do Bain Capital Specialty Finance, Inc. (BCSF) and Fidus Investment Corporation - Closed End Fund (FDUS) trade together? Their weekly returns over three years give a correlation of 0.74, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BCSF and FDUS?
Over the past 3 years, BCSF and FDUS moved with a correlation of 0.74, which is strong. Recent behaviour matches the longer record: 0.73 over 1 year against 0.74 over 3. Over 5 years the correlation is 0.64, and the annualized covariance of weekly returns is 245.3 %².
FDUS is one of the assets that tracks BCSF most closely: it ranks #2 out of the 15 assets we track against BCSF. Correlation aside, the last 12 months split them widely, with FDUS ahead by 15.7 points (-12.0% versus +3.7%).
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.
BCSF vs FDUS: side by side
| BCSF (Bain Capital Specialty Finance, Inc.) | FDUS (Fidus Investment Corporation - Closed End Fund) | |
|---|---|---|
| 1-year return | -12.0% | +3.7% |
| 5-year return | +39.1% | +100.3% |
| Volatility (ann.) | 18.9% | 17.5% |
| Beta vs S&P 500 | 0.60 | 0.57 |
| Max drawdown (3Y) | -26.4% | -23.9% |
| Market cap | $0.8B | $0.7B |
| P/E (trailing) | 12.0 | 9.5 |
| Dividend yield | 14.12% | 8.73% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BCSF | FDUS |
|---|---|---|
| 2022 | -13.3% | +17.1% |
| 2023 | +42.0% | +20.0% |
| 2024 | +29.5% | +20.5% |
| 2025 | -9.6% | +2.1% |
| 2026 | -8.5% | +8.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BCSF and FDUS good diversifiers for each other?
To a limited degree. At 0.74 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 BCSF and FDUS?
As of 2026-08-27, the correlation of weekly returns between BCSF and FDUS is 0.74 over 3 years, 0.73 over 1 year and 0.64 over 5 years.
Is FDUS a good diversifier for BCSF?
To a limited degree. At 0.74 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 0.74 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/bcsf-vs-fdus.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bcsf-vs-fdus/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BCSF correlations · FDUS correlations
