PBAM vs SERV: Correlation
Private Bancorp of America, Inc. (PBAM) and Serve Robotics Inc. (SERV) show a moderate relationship: their 3-year correlation of weekly returns is 0.58.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PBAM and SERV?
Over the past 3 years, PBAM and SERV moved with a correlation of 0.58, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.06 versus 0.58 over 3 years. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is 2157.5 %².
SERV is one of the assets that tracks PBAM most closely: it ranks #1 out of the 11 assets we track against PBAM. Their recent paths diverged sharply: over the last 12 months PBAM outperformed by 111.6 percentage points (+53.6% for PBAM against -58.0% for SERV). Risk is not evenly split, since SERV carries 9.8 times the volatility of the other side.
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.
PBAM vs SERV: side by side
| PBAM (Private Bancorp of America, Inc.) | SERV (Serve Robotics Inc.) | |
|---|---|---|
| 1-year return | +53.6% | -58.0% |
| 5-year return | +253.3% | n/a |
| Volatility (ann.) | 19.0% | 186.9% |
| Beta vs S&P 500 | 0.13 | 1.18 |
| Max drawdown (3Y) | -14.8% | -92.4% |
| Market cap | $0.5B | $0.4B |
| P/E (trailing) | 11.5 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | PBAM | SERV |
|---|---|---|
| 2022 | +20.2% | – |
| 2023 | +8.1% | – |
| 2024 | +65.0% | – |
| 2025 | -0.4% | -23.1% |
| 2026 | +53.5% | -53.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PBAM and SERV good diversifiers for each other?
To a limited degree. At 0.58 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between PBAM and SERV?
As of 2026-08-27, the correlation of weekly returns between PBAM and SERV is 0.58 over 3 years, 0.06 over 1 year and n/a over 5 years.
Is SERV a good diversifier for PBAM?
To a limited degree. At 0.58 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.58 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.
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Related comparisons
Hubs: PBAM correlations · SERV correlations
