Viavi Solutions

Viavi Solutions is the textbook example of a 5-year quiet stagflation followed by a 600% rip — the stock traded at $8.87 just twelve months ago and now sits at $51, having quietly become indispensable to every hyperscaler's optical-network buildout. The pivot story is brutal in its simplicity: when AI training clusters scaled from 8,000 GPUs to 100,000 GPUs per pod, the optical interconnects between them needed to be tested at 800G and 1.6T line rates. Viavi owns ~70% of that test-equipment niche.

The Q3/FY26 print delivered revenue growth of +42.8% YoY — by far the fastest in the company's 20-year history — driven by NSE (Network and Service Enablement) segment shipments to Nvidia for Spectrum-X validation labs, plus the Inertial Labs acquisition closed in December 2025 that added defense-grade positioning sensors and instantly made Viavi a dual-use civilian/defense supplier.

What the consensus model misses: the optical-test market is not a one-year stat capex story. Each new generation (800G→1.6T→3.2T) requires fresh test platforms. Nvidia, AMD, Broadcom and Marvell are guiding to a 4-year line-rate roadmap. Viavi captures recurring revenue every step — and currently trades at 8.8x FY27 EV/EBITDA versus Keysight at 22x and Anritsu at 14x.

Smart money is just starting to wake up. Whale Rock Capital initiated a 2.4M-share position in Q4/2025 (per 13F filed February 2026), per Whalewisdom one of their largest single-name additions in 8 quarters. Tiger Global added 1.1M shares same quarter. Renaissance Technologies quietly built a 4.8M-share position — typical of their factor-driven momentum/quality blends.

Notably absent: Berkshire, Pershing Square, Greenlight Capital. The smart-money rotation has been concentrated in the AI-infrastructure-aware funds (Whale Rock, Tiger, Lone Pine) rather than traditional value names — consistent with the stock having tripled in 12 months.

Insider activity (SEC Form 4): CEO Oleg Khaykin sold 220,000 shares in February 2026 at $48 (10b5-1 plan, value ~$10.6M) — routine but worth flagging that no insider has bought on the open market since 2023. CFO Henk Derksen still holds 95% of his vested options.

Viavi trades at a forward P/E of 40.3x and EV/sales of 8.9x on FY27 consensus — comfortably above its 10-year median forward P/E of 18x. The closest peer Keysight Technologies sits at 22x forward P/E with slower revenue growth; specialty test peer Anritsu at 14x. On an EV/EBITDA basis Viavi is at 8.8x FY27 — actually cheaper than Keysight (22x) when stripping the Inertial Labs deal and applying a defense-grade EBITDA multiple to that segment. The sum-of-parts argument: $9B for the core optical test business + $2.5B for Inertial Labs + $1B for the wireless/lab business = $12.5B equity value, implying $54 fair value versus $51 today. Bull scenario with 1.6T ramp accelerating + buyback launch: $70-80. Bear scenario: any single quarter of revenue growth deceleration below 25% would trigger a 30-40% drawdown given the multiple expansion already in the price.

1. May 7, 2026: Q4/FY26 earnings — first reading on potential buyback authorization and Inertial Labs full-quarter integration; analyst consensus EPS at $0.31
2. June 17, 2026: OFC 2026 follow-up conference call — typically a 1.6T-roadmap update from hyperscaler buyers; could expand or contract Viavi's TAM picture
3. September 2026: Nvidia Spectrum-X 1.6T production ramp at TSMC and Amkor — Viavi MAP-2100 test capacity adds expected to triple, driving Q1/FY27 revenue inflection

Viavi is the cleanest pure-play on hyperscaler optical-interconnect spend that is still small enough to matter for portfolio returns — $12B market cap means a re-rating can still produce 50-100% upside without bumping into capacity issues. I treat it as a 2-3% position in a thematic AI-infrastructure sleeve, not a forever hold. The risk-reward is now skewed: every 5% of upside on Q4 earnings probably costs 15-20% of downside if guidance disappoints. My hard stop is below the 50-day moving average at $44 — if it breaks that, the multiple-compression story plays out fast. Watching FCF more than headline revenue.