FTEK vs RVSB: Correlation
Measured on weekly returns over the past three years, Fuel Tech, Inc. (FTEK) and Riverview Bancorp Inc (RVSB) carry a correlation of -0.18, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FTEK and RVSB?
On 3 years of weekly data the FTEK/RVSB correlation comes out at -0.18, negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.44) than the 3-year average (-0.18). The 5-year figure is -0.05, and annualized covariance runs at -274.7 %².
RVSB is close to the least connected end of FTEK's tracked universe, ranking #11 of 13. The last year tells two different stories: RVSB led by 52.9 percentage points, -49.8% for FTEK against +3.1% for RVSB. Risk is not evenly split, since FTEK carries 2.3 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.
FTEK vs RVSB: side by side
| FTEK (Fuel Tech, Inc.) | RVSB (Riverview Bancorp Inc) | |
|---|---|---|
| 1-year return | -49.8% | +3.1% |
| 5-year return | -21.1% | -17.9% |
| Volatility (ann.) | 58.1% | 25.6% |
| Beta vs S&P 500 | 0.70 | 0.17 |
| Max drawdown (3Y) | -67.2% | -42.5% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 1.55% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FTEK | RVSB |
|---|---|---|
| 2022 | -9.3% | +3.2% |
| 2023 | -17.3% | -13.1% |
| 2024 | +0.0% | -7.4% |
| 2025 | +48.6% | -11.3% |
| 2026 | -6.4% | +4.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FTEK and RVSB good diversifiers for each other?
Yes: at -0.18, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between FTEK and RVSB?
As of 2026-08-27, the correlation of weekly returns between FTEK and RVSB is -0.18 over 3 years, -0.44 over 1 year and -0.05 over 5 years.
Is RVSB a good diversifier for FTEK?
Yes: at -0.18, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.18 mean?
A reading of -0.18 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ftek-vs-rvsb.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ftek-vs-rvsb/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: FTEK correlations · RVSB correlations
