FSI vs SOFI: Correlation
How closely do Flexible Solutions International Inc. (FSI) and SoFi Technologies, Inc. (SOFI) trade together? Their weekly returns over three years give a correlation of 0.40, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FSI and SOFI?
Over the past 3 years, FSI and SOFI moved with a correlation of 0.40, which is moderate. The relationship has been stable: the 1-year correlation (0.39) sits close to the 3-year figure. Over 5 years the correlation is 0.26, and the annualized covariance of weekly returns is 1661.0 %².
SOFI is one of the assets that tracks FSI most closely: it ranks #2 out of the 10 assets we track against FSI. The last year tells two different stories: SOFI led by 15.2 percentage points, -38.4% for FSI against -23.2% for SOFI.
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.
FSI vs SOFI: side by side
| FSI (Flexible Solutions International Inc.) | SOFI (SoFi Technologies, Inc.) | |
|---|---|---|
| 1-year return | -38.4% | -23.2% |
| 5-year return | +71.9% | +35.2% |
| Volatility (ann.) | 73.1% | 56.2% |
| Beta vs S&P 500 | 1.39 | 2.40 |
| Max drawdown (3Y) | -56.4% | -53.0% |
| Market cap | $0.1B | $24.8B |
| P/E (trailing) | – | 38.4 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FSI | SOFI |
|---|---|---|
| 2022 | -20.3% | -70.8% |
| 2023 | -37.3% | +115.8% |
| 2024 | +89.0% | +54.8% |
| 2025 | +90.6% | +70.0% |
| 2026 | -11.8% | -26.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FSI and SOFI good diversifiers for each other?
A fair diversifier. At 0.40, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between FSI and SOFI?
Using weekly returns as of 2026-08-27: 0.40 over 3 years, with 0.39 over the last year and 0.26 over 5 years.
Is SOFI a good diversifier for FSI?
A fair diversifier. At 0.40, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.40 mean?
On the −1 to +1 scale, 0.40 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/fsi-vs-sofi.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/fsi-vs-sofi/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: FSI correlations · SOFI correlations
