ATEN vs NTCT: Correlation
How closely do A10 Networks, Inc. (ATEN) and NetScout Systems, Inc. (NTCT) trade together? Their weekly returns over three years give a correlation of 0.50, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATEN and NTCT?
Across a 3-year window, the weekly returns of ATEN and NTCT correlate at 0.50, moderate. Little has changed lately, as the 1-year reading of 0.40 lands near the 3-year figure. Stretching to 5 years gives 0.30, with an annualized covariance of 513.2 %².
NTCT is one of the assets that tracks ATEN most closely: it ranks #1 out of the 14 assets we track against ATEN. Neither side won the trailing year by much: +56.6% against +59.4%.
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.
ATEN vs NTCT: side by side
| ATEN (A10 Networks, Inc.) | NTCT (NetScout Systems, Inc.) | |
|---|---|---|
| 1-year return | +56.6% | +59.4% |
| 5-year return | +106.4% | +42.7% |
| Volatility (ann.) | 34.0% | 30.4% |
| Beta vs S&P 500 | 0.89 | 0.85 |
| Max drawdown (3Y) | -33.9% | -38.4% |
| Market cap | $2.0B | $2.9B |
| P/E (trailing) | 44.3 | 23.5 |
| Dividend yield | 0.93% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ATEN | NTCT |
|---|---|---|
| 2022 | +1.7% | -1.7% |
| 2023 | -19.4% | -32.5% |
| 2024 | +42.1% | -1.3% |
| 2025 | -2.6% | +24.9% |
| 2026 | +53.9% | +45.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATEN and NTCT good diversifiers for each other?
Only partially. A correlation of 0.50 means ATEN and NTCT share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between ATEN and NTCT?
The ATEN/NTCT correlation stands at 0.50 on a 3-year window (1 year: 0.40, 5 years: 0.30), computed from weekly returns as of 2026-08-27.
Is NTCT a good diversifier for ATEN?
Only partially. A correlation of 0.50 means ATEN and NTCT share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.50 mean?
On the −1 to +1 scale, 0.50 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/aten-vs-ntct.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/aten-vs-ntct/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ATEN correlations · NTCT correlations
