NTAP vs STK: Correlation
Measured on weekly returns over the past three years, NetApp (NTAP) and Columbia Seligman Premium Technology Growth Fund Inc (STK) carry a correlation of 0.55, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NTAP and STK?
On 3 years of weekly data the NTAP/STK correlation comes out at 0.55, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.44 versus 0.55 over 3 years. The 5-year figure is 0.57, and annualized covariance runs at 551.6 %².
By 3-year correlation, STK places #8 of the 32 assets tracked against NTAP. Their 12-month results are close: +73.0% for NTAP against +76.8% for STK.
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.
NTAP vs STK: side by side
| NTAP (NetApp) | STK (Columbia Seligman Premium Technology Growth Fund Inc) | |
|---|---|---|
| 1-year return | +73.0% | +76.8% |
| 5-year return | +141.7% | +153.2% |
| Volatility (ann.) | 37.6% | 26.4% |
| Beta vs S&P 500 | 1.38 | 1.51 |
| Max drawdown (3Y) | -42.6% | -26.6% |
| Market cap | $37.4B | – |
| P/E (trailing) | 30.5 | 5.9 |
| Dividend yield | 1.07% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | NTAP | STK |
|---|---|---|
| 2022 | -32.9% | -30.4% |
| 2023 | +51.1% | +49.2% |
| 2024 | +34.2% | +17.7% |
| 2025 | -5.9% | +24.9% |
| 2026 | +80.3% | +47.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NTAP and STK good diversifiers for each other?
To a limited degree. At 0.55 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between NTAP and STK?
Using weekly returns as of 2026-08-27: 0.55 over 3 years, with 0.44 over the last year and 0.57 over 5 years.
Is STK a good diversifier for NTAP?
To a limited degree. At 0.55 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.55 mean?
On the −1 to +1 scale, 0.55 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/ntap-vs-stk.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ntap-vs-stk/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: NTAP correlations · STK correlations
