STK vs STX: Correlation
Columbia Seligman Premium Technology Growth Fund Inc (STK) and Seagate Technology (STX) show a strong relationship: their 3-year correlation of weekly returns is 0.61.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are STK and STX?
On 3 years of weekly data the STK/STX correlation comes out at 0.61, strong. Recent behaviour matches the longer record: 0.58 over 1 year against 0.61 over 3. The 5-year figure is 0.62, and annualized covariance runs at 824.5 %².
Among the 33 assets we track against STK, STX ranks #15 by 3-year correlation. Correlation aside, the last 12 months split them widely, with STX ahead by 334.0 points (+76.8% versus +410.8%). Note the risk asymmetry: STX runs 1.9 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.
STK vs STX: side by side
| STK (Columbia Seligman Premium Technology Growth Fund Inc) | STX (Seagate Technology) | |
|---|---|---|
| 1-year return | +76.8% | +410.8% |
| 5-year return | +153.2% | +1032.5% |
| Volatility (ann.) | 26.4% | 51.3% |
| Beta vs S&P 500 | 1.51 | 1.97 |
| Max drawdown (3Y) | -26.6% | -40.0% |
| Market cap | – | $192.0B |
| P/E (trailing) | 5.9 | 61.0 |
| Dividend yield | 0.00% | 0.35% |
| Sector / category | US Listed | Information Technology |
Year-by-year returns
| Year | STK | STX |
|---|---|---|
| 2022 | -30.4% | -51.4% |
| 2023 | +49.2% | +69.1% |
| 2024 | +17.7% | +4.1% |
| 2025 | +24.9% | +225.3% |
| 2026 | +47.2% | +208.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are STK and STX good diversifiers for each other?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between STK and STX?
Using weekly returns as of 2026-08-27: 0.61 over 3 years, with 0.58 over the last year and 0.62 over 5 years.
Is STX a good diversifier for STK?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.61 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/stk-vs-stx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/stk-vs-stx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: STK correlations · STX correlations
