HE vs SILO: Correlation
How closely do Hawaiian Electric Industries, Inc. (HE) and Silo Pharma, Inc. (SILO) trade together? Their weekly returns over three years give a correlation of 0.49, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are HE and SILO?
Across a 3-year window, the weekly returns of HE and SILO correlate at 0.49, moderate. The past 12 months show a weaker link (0.16) than the 3-year average (0.49). Stretching to 5 years gives 0.01, with an annualized covariance of 3668.8 %².
By 3-year correlation, SILO places #7 of the 18 assets tracked against HE. The last year tells two different stories: HE led by 64.4 percentage points, -9.1% for HE against -73.5% for SILO. One caveat on sizing: SILO is 2.2 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.
HE vs SILO: side by side
| HE (Hawaiian Electric Industries, Inc.) | SILO (Silo Pharma, Inc.) | |
|---|---|---|
| 1-year return | -9.1% | -73.5% |
| 5-year return | -71.4% | -97.9% |
| Volatility (ann.) | 58.8% | 126.9% |
| Beta vs S&P 500 | 0.09 | 0.38 |
| Max drawdown (3Y) | -53.3% | -95.2% |
| Market cap | $2.0B | – |
| P/E (trailing) | 8.9 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | HE | SILO |
|---|---|---|
| 2022 | +4.3% | -53.0% |
| 2023 | -64.6% | -57.1% |
| 2024 | -31.4% | -38.2% |
| 2025 | +26.4% | -61.8% |
| 2026 | -6.8% | -50.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are HE and SILO good diversifiers for each other?
Reasonably. At 0.49, HE and SILO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between HE and SILO?
Using weekly returns as of 2026-08-27: 0.49 over 3 years, with 0.16 over the last year and 0.01 over 5 years.
Is SILO a good diversifier for HE?
Reasonably. At 0.49, HE and SILO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.49 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/he-vs-silo.json
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Related comparisons
Hubs: HE correlations · SILO correlations
