KFFB vs SPY: Correlation
How closely do Kentucky First Federal Bancorp (KFFB) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.09, which is near-zero.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KFFB and SPY?
Over the past 3 years, KFFB and SPY moved with a correlation of 0.09, which is near zero, meaning they move largely independently. Recent behaviour matches the longer record: 0.11 over 1 year against 0.09 over 3. Over 5 years the correlation is -0.05, and the annualized covariance of weekly returns is 43.7 %².
Out of 10 assets tracked against KFFB, SPY lands near the bottom at #6. Correlation aside, the last 12 months split them widely, with KFFB ahead by 64.1 points (+84.7% versus +20.6%). One caveat on sizing: KFFB is 2.4 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
KFFB vs SPY: side by side
| KFFB (Kentucky First Federal Bancorp) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +84.7% | +20.6% |
| 5-year return | -6.1% | +82.4% |
| Volatility (ann.) | 34.2% | 14.5% |
| Beta vs S&P 500 | 0.21 | 1.00 |
| Max drawdown (3Y) | -61.6% | -18.8% |
| Market cap | – | – |
| P/E (trailing) | 24.6 | – |
| Dividend yield | 0.00% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | US Listed | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | KFFB | SPY |
|---|---|---|
| 2022 | -6.6% | -18.2% |
| 2023 | -28.8% | +26.2% |
| 2024 | -32.7% | +24.9% |
| 2025 | +56.0% | +17.7% |
| 2026 | +27.1% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KFFB and SPY good diversifiers for each other?
By historical standards, yes. A correlation of 0.09 means the two rarely move for the same reasons.
FAQ
What is the correlation between KFFB and SPY?
As of 2026-08-27, the correlation of weekly returns between KFFB and SPY is 0.09 over 3 years, 0.11 over 1 year and -0.05 over 5 years.
Is SPY a good diversifier for KFFB?
By historical standards, yes. A correlation of 0.09 means the two rarely move for the same reasons.
What does a correlation of 0.09 mean?
On the −1 to +1 scale, 0.09 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.
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Related comparisons
Hubs: KFFB correlations · SPY correlations
