GUTS vs PFSI: Correlation
Measured on weekly returns over the past three years, Fractyl Health, Inc. (GUTS) and PennyMac Financial Services, Inc. (PFSI) carry a correlation of 0.36, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GUTS and PFSI?
On 3 years of weekly data the GUTS/PFSI correlation comes out at 0.36, moderate. The link has tightened recently: the 1-year correlation (0.54) runs above the 3-year figure (0.36). The 5-year figure is n/a, and annualized covariance runs at 1386.6 %².
Among the 10 assets we track against GUTS, PFSI ranks #5 by 3-year correlation. On 12-month performance GUTS holds a 6.2-point edge, -25.1% against -31.3%. Risk is not evenly split, since GUTS carries 3.1 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.
GUTS vs PFSI: side by side
| GUTS (Fractyl Health, Inc.) | PFSI (PennyMac Financial Services, Inc.) | |
|---|---|---|
| 1-year return | -25.1% | -31.3% |
| 5-year return | n/a | +17.5% |
| Volatility (ann.) | 108.3% | 34.9% |
| Beta vs S&P 500 | 1.43 | 0.57 |
| Max drawdown (3Y) | -96.9% | -53.8% |
| Market cap | $0.1B | $3.8B |
| P/E (trailing) | – | 10.0 |
| Dividend yield | 0.00% | 1.65% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GUTS | PFSI |
|---|---|---|
| 2022 | – | -17.6% |
| 2023 | – | +57.8% |
| 2024 | – | +16.8% |
| 2025 | +6.8% | +30.5% |
| 2026 | -66.3% | -43.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GUTS and PFSI good diversifiers for each other?
Reasonably. At 0.36, GUTS and PFSI keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between GUTS and PFSI?
As of 2026-08-27, the correlation of weekly returns between GUTS and PFSI is 0.36 over 3 years, 0.54 over 1 year and n/a over 5 years.
Is PFSI a good diversifier for GUTS?
Reasonably. At 0.36, GUTS and PFSI keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 mean?
On the −1 to +1 scale, 0.36 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/guts-vs-pfsi.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/guts-vs-pfsi/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: GUTS correlations · PFSI correlations
