NOC vs TDY: Correlation
Measured on weekly returns over the past three years, Northrop Grumman (NOC) and Teledyne Technologies (TDY) carry a correlation of 0.36, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NOC and TDY?
On 3 years of weekly data the NOC/TDY correlation comes out at 0.36, moderate. The relationship has been stable: the 1-year correlation (0.39) sits close to the 3-year figure. The 5-year figure is 0.34, and annualized covariance runs at 209.2 %².
By 3-year correlation, TDY places #13 of the 30 assets tracked against NOC. Correlation aside, the last 12 months split them widely, with TDY ahead by 21.3 points (-5.6% versus +15.7%). On a rolling one-year basis the correlation drifted between 0.09 and 0.52, a moderate band.
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 TDY: side by side
| NOC (Northrop Grumman) | TDY (Teledyne Technologies) | |
|---|---|---|
| 1-year return | -5.6% | +15.7% |
| 5-year return | +60.1% | +36.5% |
| Volatility (ann.) | 26.7% | 22.0% |
| Beta vs S&P 500 | 0.24 | 0.76 |
| Max drawdown (3Y) | -35.1% | -18.8% |
| Market cap | $77.4B | $29.0B |
| P/E (trailing) | 17.5 | 30.7 |
| Dividend yield | 1.71% | 0.00% |
| Sector / category | Industrials | Information Technology |
Year-by-year returns
| Year | NOC | TDY |
|---|---|---|
| 2022 | +43.0% | -8.5% |
| 2023 | -12.8% | +11.6% |
| 2024 | +1.9% | +4.0% |
| 2025 | +23.6% | +10.0% |
| 2026 | -3.7% | +22.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NOC and TDY good diversifiers for each other?
Reasonably. At 0.36, NOC and TDY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between NOC and TDY?
The NOC/TDY correlation stands at 0.36 on a 3-year window (1 year: 0.39, 5 years: 0.34), computed from weekly returns as of 2026-08-27.
Is TDY a good diversifier for NOC?
Reasonably. At 0.36, NOC and TDY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 mean?
On the −1 to +1 scale, 0.36 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-tdy.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/noc-vs-tdy/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: NOC correlations · TDY correlations
