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NWN vs T: Correlation

How closely do Northwest Natural Holding Company (NWN) and AT&T (T) trade together? Their weekly returns over three years give a correlation of 0.37, which is moderate.

Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology

Correlation (3Y)
0.37
moderate
Correlation (1Y)
0.33
last 12 months
Correlation (5Y)
0.35
long-run
Ann. covariance
171.5
%² · weekly, annualized

How correlated are NWN and T?

Across a 3-year window, the weekly returns of NWN and T correlate at 0.37, moderate. Little has changed lately, as the 1-year reading of 0.33 lands near the 3-year figure. Stretching to 5 years gives 0.35, with an annualized covariance of 171.5 %².

Within NWN's tracked universe of 16 assets, T comes in at #10 by 3-year correlation. Correlation aside, the last 12 months split them widely, with NWN ahead by 32.8 points (+24.4% versus -8.4%).

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.

NWN vs T: side by side

NWN (Northwest Natural Holding Company)T (AT&T)
1-year return+24.4%-8.4%
5-year return+20.2%+67.2%
Volatility (ann.)20.8%22.4%
Beta vs S&P 5000.170.05
Max drawdown (3Y)-13.5%-28.9%
Market cap$2.1B$174.3B
P/E (trailing)16.98.4
Dividend yield3.91%4.29%
Sector / categoryUS ListedCommunication Services
Lower P/E: T 8.4 vs 16.9Higher yield: T 4.29% vs 3.91%Smaller drawdown: NWN -13.5% vs -28.9%Higher 5y return: T +67.2% vs +20.2%
-28%0%+36%2025-09-052026-08-27
Both assets over the last year, indexed to 100 at the starting week. NWN · T

Year-by-year returns

YearNWNT
2022+1.5%+6.5%
2023-14.4%-2.7%
2024+6.8%+44.1%
2025+23.7%+14.0%
2026+9.2%+6.1%

Calendar-year price returns; the current year is year-to-date as of the data date above.

Are NWN and T good diversifiers for each other?

A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.

FAQ

What is the correlation between NWN and T?

Using weekly returns as of 2026-08-27: 0.37 over 3 years, with 0.33 over the last year and 0.35 over 5 years.

Is T a good diversifier for NWN?

A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.

What does a correlation of 0.37 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.

Use this data

JSON API · no key required
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NWN vs T: 3-year weekly correlation 0.37NWN vs T0.37

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Related comparisons

Hubs: NWN correlations · T correlations