GLU vs SER: Correlation
How closely do Gabelli Global Utility (GLU) and Serina Therapeutics, Inc. (SER) trade together? Their weekly returns over three years give a correlation of -0.22, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GLU and SER?
On 3 years of weekly data the GLU/SER correlation comes out at -0.22, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.29 over 1 year against -0.22 over 3. The 5-year figure is -0.06, and annualized covariance runs at -359.9 %².
SER is close to the least connected end of GLU's tracked universe, ranking #10 of 12. Their recent paths diverged sharply: over the last 12 months GLU outperformed by 65.0 percentage points (+15.5% for GLU against -49.5% for SER). Note the risk asymmetry: SER runs 5.9 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
GLU vs SER: side by side
| GLU (Gabelli Global Utility) | SER (Serina Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | +15.5% | -49.5% |
| 5-year return | +33.9% | -93.1% |
| Volatility (ann.) | 16.8% | 98.4% |
| Beta vs S&P 500 | 0.45 | -0.30 |
| Max drawdown (3Y) | -17.9% | -95.5% |
| Market cap | – | $0.1B |
| P/E (trailing) | 3.9 | – |
| Dividend yield | 6.22% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GLU | SER |
|---|---|---|
| 2022 | -28.1% | -49.4% |
| 2023 | +2.1% | -30.3% |
| 2024 | +23.6% | -63.6% |
| 2025 | +37.9% | -61.8% |
| 2026 | +5.0% | +31.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GLU and SER good diversifiers for each other?
Yes: at -0.22, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between GLU and SER?
Using weekly returns as of 2026-08-27: -0.22 over 3 years, with -0.29 over the last year and -0.06 over 5 years.
Is SER a good diversifier for GLU?
Yes: at -0.22, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.22 mean?
On the −1 to +1 scale, -0.22 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: GLU correlations · SER correlations
