CLST vs SPY: Correlation
How closely do Catalyst Bancorp, Inc. (CLST) 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 CLST and SPY?
On 3 years of weekly data the CLST/SPY correlation comes out at 0.09, near zero, meaning they move largely independently. Lately the two have drifted apart, with the 1-year correlation at -0.25 versus 0.09 over 3 years. The 5-year figure is 0.16, and annualized covariance runs at 17.0 %².
Among the 12 assets we track against CLST, SPY ranks #6 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months CLST outperformed by 15.3 percentage points (+35.9% for CLST against +20.6% for SPY).
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.
CLST vs SPY: side by side
| CLST (Catalyst Bancorp, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +35.9% | +20.6% |
| 5-year return | +28.2% | +82.4% |
| Volatility (ann.) | 13.2% | 14.5% |
| Beta vs S&P 500 | 0.08 | 1.00 |
| Max drawdown (3Y) | -12.7% | -18.8% |
| Market cap | $0.1B | – |
| P/E (trailing) | 31.1 | – |
| 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 | CLST | SPY |
|---|---|---|
| 2022 | -7.1% | -18.2% |
| 2023 | -14.6% | +26.2% |
| 2024 | +8.6% | +24.9% |
| 2025 | +33.8% | +17.7% |
| 2026 | +10.4% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CLST and SPY good diversifiers for each other?
Yes: at 0.09, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between CLST and SPY?
Using weekly returns as of 2026-08-27: 0.09 over 3 years, with -0.25 over the last year and 0.16 over 5 years.
Is SPY a good diversifier for CLST?
Yes: at 0.09, the two have gone their own ways historically, which is what genuine diversification looks like.
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: CLST correlations · SPY correlations
