Vodafone Idea’s decision to modernize its transport network with Ciena (CIEN) WaveLogic 6 Extreme coherent optical technology, including 1.6 Tb/s data center links in India, has put fresh focus on the stock’s role in AI era bandwidth demand.

That Vodafone Idea win lands at a time when Ciena’s share price has climbed 77.6% over the past 90 days and 68.8% year to date, while the 1 year total shareholder return is well over 5x. This points to strong momentum as investors reassess growth potential and risk.

If this kind of AI infrastructure story interests you, it could be worth scanning other names plugged into the theme through the 36 AI infrastructure stocks.

With Ciena now up 77.6% in 90 days and trading above the average analyst price target, while also showing double digit revenue and net income growth, the key question is whether there is still a buying opportunity or if markets already reflect expectations for future performance.

Most Popular Narrative: 75.2% Overvalued

At a last close of $415.39 versus a most followed fair value estimate of $237.13, the narrative suggests Ciena is priced well ahead of that model and puts the focus squarely on how much of the AI optical story is already embedded in the current level.

Major cloud providers and a new wave of neo-scalers are aggressively investing in high-capacity, low-latency optical networking infrastructure to support AI workloads, driving multiyear, global network buildouts that should significantly expand Ciena's addressable market and underpin sustained, above-trend revenue growth.

Read the complete narrative. Read the complete narrative.

Want to see what kind of revenue curve and profit margins are baked into that fair value? The narrative leans on ambitious growth, richer margins, and a premium future earnings multiple. Curious which specific financial targets need to fall into place to support that valuation.

Result: Fair Value of $237.13 (OVERVALUED)

However, heavy reliance on a small group of large customers, along with rapid shifts toward open or disaggregated networking, could quickly challenge the upbeat AI optical thesis.

Another Angle: Multiples Tell a Different Story

While the narrative fair value of $237.13 points to Ciena as overvalued, its P/S ratio paints a more mixed picture. At 11.5x, Ciena trades above the US Communications industry average of 2.3x, yet below peers at 13.4x and above a fair ratio of 6.2x, which suggests the market could still compress that gap. So is this premium more about quality or about investors stretching too far on the AI theme?

To see how the numbers stack up using this P/S lens, including how much of that premium rests on current expectations, See what the numbers say about this price — find out in our valuation breakdown.

Next Steps

With sentiment clearly split between rich valuation and AI driven growth hopes, it makes sense to move fast and test the story against the numbers yourself by weighing up the 2 key rewards and 2 important warning signs.

Looking for more investment ideas?

If AI infrastructure has caught your attention, do not stop at a single stock; broaden your watchlist with focused ideas that match the kind of opportunities you want to pursue.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.