NBBK vs TRT: Correlation
NB Bancorp, Inc. (NBBK) and Trio-Tech International (TRT) show a negative relationship: their 3-year correlation of weekly returns is -0.28.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NBBK and TRT?
On 3 years of weekly data the NBBK/TRT correlation comes out at -0.28, negative, meaning they tend to move in opposite directions. The link has loosened recently: the 1-year correlation (-0.63) runs below the 3-year figure (-0.28). The 5-year figure is n/a, and annualized covariance runs at -864.6 %².
Among the 17 assets we track against NBBK, TRT sits near the bottom by co-movement, at rank #15. The last year tells two different stories: TRT led by 276.2 percentage points, +19.3% for NBBK against +295.5% for TRT. Risk is not evenly split, since TRT carries 3.9 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 TRT: side by side
| NBBK (NB Bancorp, Inc.) | TRT (Trio-Tech International) | |
|---|---|---|
| 1-year return | +19.3% | +295.5% |
| 5-year return | n/a | +365.8% |
| Volatility (ann.) | 27.6% | 107.4% |
| Beta vs S&P 500 | 0.84 | 0.18 |
| Max drawdown (3Y) | -24.7% | -54.6% |
| Market cap | $1.0B | – |
| P/E (trailing) | 14.7 | 209.6 |
| Dividend yield | 4.39% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NBBK | TRT |
|---|---|---|
| 2022 | – | -66.5% |
| 2023 | – | +12.7% |
| 2024 | +34.3% | +14.6% |
| 2025 | +10.6% | +127.9% |
| 2026 | +13.9% | +58.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NBBK and TRT good diversifiers for each other?
Yes: at -0.28, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between NBBK and TRT?
The NBBK/TRT correlation stands at -0.28 on a 3-year window (1 year: -0.63, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is TRT a good diversifier for NBBK?
Yes: at -0.28, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.28 mean?
A reading of -0.28 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/nbbk-vs-trt.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/nbbk-vs-trt/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: NBBK correlations · TRT correlations
