• Investors may be wondering if Lumentum Holdings at around US$957.24 is still offering value after a strong run, or if most of the easy upside is already priced in.
• The stock has moved sharply, with a 16.5% gain over the past week, a slight 1.4% decline over the last 30 days, and very large returns year to date and over multi year periods.
• Recent coverage has focused on how the stock's rapid gains have sharpened the debate around what investors are actually paying for, whether that is future growth, improved sentiment, or a re rating of the business. Headlines have also highlighted that such strong price moves can change how the market views both the opportunity and the risks around Lumentum Holdings.
• Simply Wall St currently assigns Lumentum Holdings a valuation score of 2 out of 6, and the rest of this article walks through what different valuation approaches say about that score, before finishing with a broader way to think about what the stock might really be worth.

Lumentum Holdings scores just 2/6 on our valuation checks. See what other red flags we found in the full valuation breakdown.

Approach 1: Lumentum Holdings Discounted Cash Flow (DCF) Analysis

A Discounted Cash Flow, or DCF, model projects the cash a company could generate in the future and then discounts those amounts back to today to estimate what the business might be worth right now.

For Lumentum Holdings, the starting point is last twelve month free cash flow of about $135.9 million. Analysts have provided explicit free cash flow estimates out to 2028, and Simply Wall St then extrapolates those forecasts further. In this model, projected free cash flow reaches about $2,738.2 million in 2028, with further estimates extending to 2035.

Using a 2 Stage Free Cash Flow to Equity model built on those projections, the DCF output suggests an estimated intrinsic value of roughly $1,496.19 per share. Compared with the recent share price around $957.24, this implies the stock is about 36.0% below that DCF estimate, which indicates that, on this measure, Lumentum Holdings is trading at a discount.

Result: UNDERVALUED

Our Discounted Cash Flow (DCF) analysis suggests Lumentum Holdings is undervalued by 36.0%. Track this in your watchlist or portfolio, or discover 47 more high quality undervalued stocks.

Approach 2: Lumentum Holdings Price vs Sales

For companies where revenue is a key driver and earnings can be more volatile, the P/S ratio is often a useful way to think about what you are paying for each dollar of sales. It helps you compare how the market values a company’s revenue against others in the same space.

Growth expectations and risk both matter here. Higher expected growth or lower perceived risk can justify a higher “normal” or “fair” P/S multiple, while slower growth or higher risk usually points to a lower one.

Lumentum Holdings currently trades on a P/S of 29.93x. That sits well above the Communications industry average P/S of 2.50x and also above the peer group average of 8.93x. Simply Wall St’s proprietary “Fair Ratio” for Lumentum on this measure is 29.29x, which reflects factors such as its earnings growth profile, margins, industry, market value and risk.

The Fair Ratio aims to be more tailored than a simple peer or industry comparison because it adjusts for company specific traits rather than assuming all stocks in a sector deserve the same multiple. When comparing the current 29.93x P/S to the Fair Ratio of 29.29x, Lumentum Holdings looks slightly expensive on this metric.

Result: OVERVALUED

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Upgrade Your Decision Making: Choose your Lumentum Holdings Narrative

Earlier the article hinted at a better way to think about valuation, and that is Narratives, where you express your story for Lumentum Holdings as a set of concrete numbers such as your own fair value, revenue and earnings paths, and margin assumptions, then link that story to a forecast and finally to a fair value that can be compared with today’s price.

On Simply Wall St’s Community page, Narratives are an accessible tool used by millions of investors that let you pick or adjust a storyline, whether that is a bullish view that Lumentum Holdings could justify a fair value around US$5,085.95 or a more cautious view closer to US$433.09, and then see how those assumptions translate into future cash flows, earnings and valuation multiples.

Because Narratives update automatically when new information comes in, such as Lumentum’s earnings, guidance or major customer agreements, you can quickly see whether your chosen Narrative still lines up with the latest data and whether your fair value still sits above or below the current share price, which can help you decide if the stock now looks closer to a buy, a hold, or a sell for your own portfolio rules.

For Lumentum Holdings however we'll make it really easy for you with previews of two leading Lumentum Holdings Narratives:

Start with the bullish case if you want to see how higher growth and margins might justify an even richer valuation, then cross check it against a more cautious fair value that leans on tighter assumptions and a lower price anchor.

Fair value: US$5,085.95

Implied discount to this fair value at about US$957.24: roughly 81% below the narrative fair value on this framework.

Revenue growth used in this narrative: 50.98%

• Frames Lumentum as a photonics manufacturer tied closely to high speed cloud and AI data center optics, where product depth and vertical integration matter.
• Highlights a recent recovery in margins, cash flow and balance sheet flexibility, while still flagging that earnings and free cash flow have been volatile and need to prove durable.
• Argues that the current share price does not fully reflect this recovery story, with the fair value in this narrative sitting well above where the stock is trading.

Fair value: US$433.09

Implied premium to this fair value at about US$957.24: roughly 121% above the narrative fair value on this framework.

Revenue growth used in this narrative: 38.57%

• Emphasizes customer concentration in hyperscale and cloud, where any slowdown in orders or pricing pressure could hit revenue and earnings.
• Points to rapid change in photonics technology, potential commoditization and rising global supply chain costs as risks to margins.
• Uses analyst assumptions that still build in solid growth and higher profit margins, yet conclude that the current share price sits well above what those expectations would support.

If you want to see how other investors are connecting these kinds of assumptions to specific price targets and risk flags, it is worth reviewing the wider range of community narratives and updating your own fair value range as new data comes through.

Do you think there's more to the story for Lumentum Holdings? Head over to our Community to see what others are saying!

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.