THFF vs TSBK: Correlation
How closely do First Financial Corporation (THFF) and Timberland Bancorp, Inc. (TSBK) trade together? Their weekly returns over three years give a correlation of 0.78, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are THFF and TSBK?
Over the past 3 years, THFF and TSBK moved with a correlation of 0.78, which is strong. Little has changed lately, as the 1-year reading of 0.73 lands near the 3-year figure. Over 5 years the correlation is 0.69, and the annualized covariance of weekly returns is 561.3 %².
Among the 70 assets we track against THFF, TSBK ranks #42 by 3-year correlation. Their 12-month results are close: +38.8% for THFF against +42.7% for TSBK.
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.
THFF vs TSBK: side by side
| THFF (First Financial Corporation) | TSBK (Timberland Bancorp, Inc.) | |
|---|---|---|
| 1-year return | +38.8% | +42.7% |
| 5-year return | +135.2% | +87.7% |
| Volatility (ann.) | 28.2% | 25.5% |
| Beta vs S&P 500 | 0.81 | 0.58 |
| Max drawdown (3Y) | -20.2% | -22.9% |
| Market cap | $0.9B | $0.4B |
| P/E (trailing) | 11.1 | 11.6 |
| Dividend yield | 2.77% | 2.43% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | THFF | TSBK |
|---|---|---|
| 2022 | +4.4% | +27.5% |
| 2023 | -2.6% | -4.8% |
| 2024 | +11.1% | +0.4% |
| 2025 | +36.2% | +21.3% |
| 2026 | +35.0% | +31.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are THFF and TSBK good diversifiers for each other?
Only partially. A correlation of 0.78 means THFF and TSBK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between THFF and TSBK?
Using weekly returns as of 2026-08-27: 0.78 over 3 years, with 0.73 over the last year and 0.69 over 5 years.
Is TSBK a good diversifier for THFF?
Only partially. A correlation of 0.78 means THFF and TSBK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.78 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/thff-vs-tsbk.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/thff-vs-tsbk/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: THFF correlations · TSBK correlations
