NBBK vs SKYH: Correlation
NB Bancorp, Inc. (NBBK) and Sky Harbour Group Corporation (SKYH) show a moderate relationship: their 3-year correlation of weekly returns is 0.37.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NBBK and SKYH?
On 3 years of weekly data the NBBK/SKYH correlation comes out at 0.37, moderate. The link has loosened recently: the 1-year correlation (0.17) runs below the 3-year figure (0.37). The 5-year figure is n/a, and annualized covariance runs at 489.6 %².
Among the 17 assets we track against NBBK, SKYH ranks #12 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months NBBK outperformed by 20.7 percentage points (+19.3% for NBBK against -1.4% for SKYH). Risk is not evenly split, since SKYH carries 2.1 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.
NBBK vs SKYH: side by side
| NBBK (NB Bancorp, Inc.) | SKYH (Sky Harbour Group Corporation) | |
|---|---|---|
| 1-year return | +19.3% | -1.4% |
| 5-year return | n/a | +4.5% |
| Volatility (ann.) | 27.6% | 57.5% |
| Beta vs S&P 500 | 0.84 | 1.13 |
| Max drawdown (3Y) | -24.7% | -39.9% |
| Market cap | $1.0B | $0.9B |
| P/E (trailing) | 14.7 | – |
| Dividend yield | 4.39% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NBBK | SKYH |
|---|---|---|
| 2022 | – | -73.8% |
| 2023 | – | +263.2% |
| 2024 | +34.3% | +23.5% |
| 2025 | +10.6% | -24.8% |
| 2026 | +13.9% | +17.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NBBK and SKYH good diversifiers for each other?
Reasonably. At 0.37, NBBK and SKYH keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between NBBK and SKYH?
The NBBK/SKYH correlation stands at 0.37 on a 3-year window (1 year: 0.17, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is SKYH a good diversifier for NBBK?
Reasonably. At 0.37, NBBK and SKYH keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.37 mean?
On the −1 to +1 scale, 0.37 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: NBBK correlations · SKYH correlations
