VIAVI enters its September-quarter report with a striking disconnect. Management closed its last call in the most confident tone of the past year, lifting margin targets and pulling its $500 million quarterly revenue milestone forward to sometime in calendar 2027. The stock has since fallen 16.1%, trailing a roughly flat S&P 500 by more than 15 percentage points. The business narrative and the share price have moved in opposite directions, and this report is the first real chance to show which one is right.
The Street is looking for non-GAAP earnings of $0.40 per share on revenue of about $455.2 million, a 52.2% jump from the $299.1 million reported a year ago, when EPS was just $0.09. Those numbers line up closely with management's outlook of $0.40 to $0.42 per share on revenue of $450 million to $460 million. Revenue consensus sits squarely in the middle of the range, while the EPS estimate rests at the low end. The Earnings Whisper of $0.44 is more telling: it sits above the top of company guidance, which suggests the more optimistic crowd expects VIAVI to keep beating its own forecasts, as it did every quarter of the last fiscal year. Matching guidance may not be enough.
The margin story deserves the closest scrutiny. Operating margin climbed from 15.7% to 24% over fiscal 2026, and management guided to 27.1% this quarter, with network and service enablement margin expected to reach 23.1%. Two caveats matter. Roughly a full point of that guide comes from a tariff refund, so the underlying improvement is smaller than the headline figure. The quarter also contains 14 weeks, which lifts revenue but carries elevated variable costs. Margins landing at or above guidance despite the extra week's expenses would validate management's new talk of mid to high 20s profitability over the long term. A miss would raise questions about whether last quarter's leverage was partly a one-time effect.
On the demand side, the data center business is the engine. It has grown from about 40% of network and service enablement to roughly half, and more than doubled year over year excluding the Spirant acquisition. The newer catalysts now need to show up in the numbers. Management said co-packaged optics revenue would begin this quarter and accelerate in December, backed by purchase orders already in hand, and that optical circuit switch sales were broadening beyond a single hyperscaler to more vendors. Confirmation that both are on schedule, plus early traction for the new ultra-Ethernet validation product, would strengthen the case that growth extends past the current AI buildout. Spirant, guided up about 10% sequentially, offers a cleaner check on integration execution.
The soft spots remain familiar. Wireless is down 40% to 45% and described as weak but stable, so any further deterioration would be a negative surprise. Rising memory and semiconductor costs are being passed through to customers, and margins will show whether that pricing is holding. Share dilution from the $575 million offering and convertibles, which pushed the diluted count to 261 million, also means profit growth must outrun a larger denominator.
Sentiment has cooled noticeably, with bullish readings falling to 32.7% from 49.8% ahead of the prior report. The stock trades at $31.88, well below its 200-day moving average of $38.34 and near the bottom of its post-earnings range of $29.56 to $48.42, a far cry from the prior quarter's peak above $60. That reset lowers the emotional bar even as the Whisper keeps the numerical one high. The central question is whether VIAVI can deliver margin expansion beyond the tariff benefit while proving that co-packaged optics and broader switch demand are arriving on time. If so, the selloff looks like a disconnect from fundamentals. If not, the market's skepticism may prove justified.