ATEN vs NTCT vs FFIV vs VIAV

For growth investors, A10 Networks, Inc.

(ATEN) is the stronger pick with 11. 0% revenue growth year-over-year, versus -0. 8% for NetScout Systems, Inc. (NTCT). F5, Inc. (FFIV) offers the better valuation at 29. 2x trailing P/E (20. 9x forward), making it the more compelling value choice. Analysts rate A10 Networks, Inc. (ATEN) a "Buy" — based on 20 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, F5, Inc.

(FFIV) is the cheapest at 29. 2x versus Viavi Solutions Inc. at 340. 3x. On forward P/E, NetScout Systems, Inc. is actually cheaper at 15. 9x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: F5, Inc. wins at 1. 12x versus Viavi Solutions Inc. 's 12. 09x — a reasonable growth-adjusted valuation.

Over the past 5 years, Viavi Solutions Inc.

(VIAV) delivered a total return of +212. 0%, compared to +42. 9% for NetScout Systems, Inc. (NTCT). Over 10 years, the gap is even starker: VIAV returned +715. 5% versus NTCT's +66. 6%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), A10 Networks, Inc.

(ATEN) is the lower-risk stock at 0. 99β versus Viavi Solutions Inc. 's 1. 54β — meaning VIAV is approximately 56% more volatile than ATEN relative to the S&P 500. On balance sheet safety, NetScout Systems, Inc. (NTCT) carries a lower debt/equity ratio of 5% versus 105% for A10 Networks, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), A10 Networks, Inc.

(ATEN) is pulling ahead at 11. 0% versus -0. 8% for NetScout Systems, Inc. (NTCT). On earnings-per-share growth, the picture is similar: Viavi Solutions Inc. grew EPS 225. 0% year-over-year, compared to -144. 4% for NetScout Systems, Inc.. Over a 3-year CAGR, FFIV leads at 4. 6% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

F5, Inc.

(FFIV) is the more profitable company, earning 22. 4% net margin versus -44. 6% for NetScout Systems, Inc. — meaning it keeps 22. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: FFIV leads at 24. 8% versus -44. 7% for NTCT. At the gross margin level — before operating expenses — FFIV leads at 81. 4%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, F5, Inc. (FFIV) is the more undervalued stock at a PEG of 1. 12x versus Viavi Solutions Inc. 's 12. 09x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, NetScout Systems, Inc. (NTCT) trades at 15. 9x forward P/E versus 55. 2x for Viavi Solutions Inc. — 39. 3x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for FFIV: -10. 0% to $310. 67.

In this comparison, ATEN (0.

9% yield) pays a dividend. NTCT, FFIV, VIAV do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, A10 Networks, Inc.

(ATEN) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 99), 0. 9% yield, +366. 2% 10Y return). Both have compounded well over 10 years (ATEN: +366. 2%, NTCT: +66. 6%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Technology sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

ATEN pays a dividend while NTCT, FFIV, VIAV do not, making them suitable for different income and tax situations. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.