NOC vs TRT: Correlation
Northrop Grumman (NOC) and Trio-Tech International (TRT) show a negative relationship: their 3-year correlation of weekly returns is -0.26.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NOC and TRT?
On 3 years of weekly data the NOC/TRT correlation comes out at -0.26, negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.41) than the 3-year average (-0.26). The 5-year figure is -0.17, and annualized covariance runs at -745.2 %².
Out of 30 assets tracked against NOC, TRT lands near the bottom at #28. The last year tells two different stories: TRT led by 301.1 percentage points, -5.6% for NOC against +295.5% for TRT. Note the risk asymmetry: TRT runs 4.0 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.
NOC vs TRT: side by side
| NOC (Northrop Grumman) | TRT (Trio-Tech International) | |
|---|---|---|
| 1-year return | -5.6% | +295.5% |
| 5-year return | +60.1% | +365.8% |
| Volatility (ann.) | 26.7% | 107.4% |
| Beta vs S&P 500 | 0.24 | 0.18 |
| Max drawdown (3Y) | -35.1% | -54.6% |
| Market cap | $77.4B | – |
| P/E (trailing) | 17.5 | 209.6 |
| Dividend yield | 1.71% | 0.00% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | NOC | TRT |
|---|---|---|
| 2022 | +43.0% | -66.5% |
| 2023 | -12.8% | +12.7% |
| 2024 | +1.9% | +14.6% |
| 2025 | +23.6% | +127.9% |
| 2026 | -3.7% | +58.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NOC and TRT good diversifiers for each other?
Yes. With a correlation of -0.26, NOC and TRT have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between NOC and TRT?
The NOC/TRT correlation stands at -0.26 on a 3-year window (1 year: -0.41, 5 years: -0.17), computed from weekly returns as of 2026-08-27.
Is TRT a good diversifier for NOC?
Yes. With a correlation of -0.26, NOC and TRT have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.26 mean?
On the −1 to +1 scale, -0.26 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/noc-vs-trt.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/noc-vs-trt/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: NOC correlations · TRT correlations
