EXTR vs STX: Correlation
How closely do Extreme Networks, Inc. (EXTR) and Seagate Technology (STX) trade together? Their weekly returns over three years give a correlation of 0.47, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EXTR and STX?
Across a 3-year window, the weekly returns of EXTR and STX correlate at 0.47, moderate. Little has changed lately, as the 1-year reading of 0.45 lands near the 3-year figure. Stretching to 5 years gives 0.41, with an annualized covariance of 1104.3 %².
In EXTR's tracked universe of 11 assets, STX sits right near the top at #2. Their recent paths diverged sharply: over the last 12 months STX outperformed by 402.8 percentage points (+8.0% for EXTR against +410.8% for STX).
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.
EXTR vs STX: side by side
| EXTR (Extreme Networks, Inc.) | STX (Seagate Technology) | |
|---|---|---|
| 1-year return | +8.0% | +410.8% |
| 5-year return | +112.0% | +1032.5% |
| Volatility (ann.) | 46.3% | 51.3% |
| Beta vs S&P 500 | 1.23 | 1.97 |
| Max drawdown (3Y) | -61.5% | -40.0% |
| Market cap | $3.0B | $192.0B |
| P/E (trailing) | 72.6 | 61.0 |
| Dividend yield | 0.00% | 0.35% |
| Sector / category | US Listed | Information Technology |
Year-by-year returns
| Year | EXTR | STX |
|---|---|---|
| 2022 | +16.6% | -51.4% |
| 2023 | -3.7% | +69.1% |
| 2024 | -5.1% | +4.1% |
| 2025 | -0.5% | +225.3% |
| 2026 | +39.5% | +208.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EXTR and STX good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.47 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between EXTR and STX?
As of 2026-08-27, the correlation of weekly returns between EXTR and STX is 0.47 over 3 years, 0.45 over 1 year and 0.41 over 5 years.
Is STX a good diversifier for EXTR?
Yes, to a useful degree: a correlation of 0.47 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.47 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
$ curl https://www.pairbook.io/api/v1/pairs/extr-vs-stx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/extr-vs-stx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: EXTR correlations · STX correlations
