NNI vs SELF: Correlation
Nelnet, Inc. (NNI) and Global Self Storage, Inc. (SELF) show a moderate relationship: their 3-year correlation of weekly returns is 0.39.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NNI and SELF?
Over the past 3 years, NNI and SELF moved with a correlation of 0.39, which is moderate. The relationship has been stable: the 1-year correlation (0.31) sits close to the 3-year figure. Over 5 years the correlation is 0.23, and the annualized covariance of weekly returns is 175.1 %².
Within NNI's tracked universe of 17 assets, SELF comes in at #11 by 3-year correlation. Over the last 12 months SELF came out ahead by 10.2 percentage points (-0.2% against +10.0%).
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.
NNI vs SELF: side by side
| NNI (Nelnet, Inc.) | SELF (Global Self Storage, Inc.) | |
|---|---|---|
| 1-year return | -0.2% | +10.0% |
| 5-year return | +67.8% | +36.6% |
| Volatility (ann.) | 22.0% | 20.6% |
| Beta vs S&P 500 | 0.59 | 0.15 |
| Max drawdown (3Y) | -18.5% | -15.9% |
| Market cap | $4.6B | $0.1B |
| P/E (trailing) | 15.3 | 31.1 |
| Dividend yield | 1.01% | 5.14% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NNI | SELF |
|---|---|---|
| 2022 | -6.0% | -10.0% |
| 2023 | -1.6% | +0.8% |
| 2024 | +22.4% | +22.0% |
| 2025 | +25.7% | +1.2% |
| 2026 | -3.7% | +13.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NNI and SELF good diversifiers for each other?
Reasonably. At 0.39, NNI and SELF keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between NNI and SELF?
As of 2026-08-27, the correlation of weekly returns between NNI and SELF is 0.39 over 3 years, 0.31 over 1 year and 0.23 over 5 years.
Is SELF a good diversifier for NNI?
Reasonably. At 0.39, NNI and SELF keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.39 mean?
On the −1 to +1 scale, 0.39 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: NNI correlations · SELF correlations
