COHR vs LITE: Which Is the Better Buy in 2026?
Last updated August 2026
Short answer
COHR and LITE are similarly sized, but COHR trades noticeably cheaper on forward earnings (31.71x vs 38.90x): the market is paying up for LITE's profile and pricing COHR more conservatively, or for faster growth. Which you prefer comes down to the drivers you believe, and whether adding either over-concentrates what you already own.
COHR vs LITE: the tie-breaker metrics
Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.
| Metric | COHR | LITE | What it tells you |
|---|---|---|---|
| Market cap | $51.43B | $55.54B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 31.71 | 38.90 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Trailing P/E | 125.19 | 125.03 | Valuation on the last 12 months. A big drop from trailing to forward means the market expects earnings to jump, so more growth is already in the price. |
| Beta | 2.04 | 1.48 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 50% of range | 62% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 4.81 | 17.22 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Reading it: COHR is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.
Before you buy: how COHR and LITE affect your concentration
The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. COHR and LITE share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.
This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined COHR and LITE exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.
What does Coherent Corp (COHR) do?
Coherent Corp, formerly II-VI and now trading as COHR on the NYSE, makes lasers, optical components, and high-speed transceivers used in AI data centers, telecom networks, industrial manufacturing, and semiconductors. Its largest and fastest-growing segment is Datacenter & Communications, which supplies the 800G and emerging 1.6T optical transceivers that connect GPUs and switches inside AI clusters, alongside a smaller Industrial segment covering lasers and materials.
What does Lumentum Holdings (LITE) do?
Lumentum Holdings designs and manufactures optical and photonic components that move data as light, including high-speed transceivers, electro-absorption modulated lasers (EMLs), continuous-wave lasers, and optical circuit switches (OCS). Its two segments are Cloud & Networking, which is roughly 88 percent of revenue and the primary growth engine, and Industrial Tech, which covers 3D sensing lasers and industrial laser applications. Acquisitions of Oclaro (2018), NeoPhotonics (2022), and Cloud Light (2023) built up its lead in indium phosphide lasers and let it move up the stack into fully assembled optical transceivers.
COHR vs LITE: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- COHR drivers: AI datacom transceiver demand; Transition to 1.6T optics.
- LITE drivers: AI data center optics demand; Optical circuit switching and CPO.
Which fits which kind of investor
A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: COHR trades at a high earnings multiple, so any slowdown in AI capital spending or a demand air pocket could hit the stock hard. For LITE, valuation is the central risk: LITE trades at a rich forward multiple, so any slowdown in AI capex or a growth miss could compress the stock sharply.
COHR or LITE: which should you pick?
COHR vs LITE: the full fundamentals
COHR. Coherent's revenue has accelerated on AI datacenter optics demand, with the Datacenter & Communications segment making up about three quarters of sales. The stock carries a high trailing multiple that reflects rapid earnings growth expectations, so the valuation depends heavily on that growth continuing. Figures are approximate and shift with each quarterly report and market moves.
LITE. Lumentum posted record Q2 FY2026 revenue of about $665 million, up more than 65 percent year over year, with non-GAAP EPS of $1.67 beating estimates. At roughly a $73 billion market cap on about $1.65 billion trailing revenue, the stock carries a very high trailing and forward P/E, pricing in continued rapid AI-driven growth. Guidance for Q3 FY2026 calls for $780 to $830 million in revenue, an acceleration from trailing levels.
Headline figures (approximate, July 2026): COHR shows revenue (ttm) ~$6.3B, q3 fy2026 revenue ~$1.81B (up ~21% YoY), q3 fy2026 non-gaap eps ~$1.41, q4 fy2026 revenue guidance ~$1.91B to $2.05B; LITE shows revenue (ttm) ~$1.65B, q2 fy2026 revenue ~$665M, revenue growth (yoy) ~65%, gross margin (ttm) ~62%.
The bottom line: COHR vs LITE
COHR and LITE are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined COHR and LITE exposure against your real portfolio. It is not an investment adviser.
Wondering how COHR or LITE fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in Coherent Corp with AI
Connect the broker you already use and ask Walnut's AI how COHR fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between COHR and LITE?
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Coherent Corp, formerly II-VI and now trading as COHR on the NYSE, makes lasers, optical components, and high-speed transceivers used in AI data centers, telecom networks, industrial manufacturing, and semiconductors. Lumentum Holdings designs and manufactures optical and photonic components that move data as light, including high-speed transceivers, electro-absorption modulated lasers (EMLs), continuous-wave lasers, and optical circuit switches (OCS). They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is COHR or LITE the better stock?
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Neither is universally better; they suit different views and risk levels. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, COHR or LITE?
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On forward P/E (as of August 2026), COHR trades at 31.71x and LITE at 38.90x, so COHR is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both COHR and LITE?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of COHR vs LITE?
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COHR: COHR trades at a high earnings multiple, so any slowdown in AI capital spending or a demand air pocket could hit the stock hard. Revenue is concentrated among a small number of hyperscaler and networking customers, which creates order-timing and pricing risk. The optical components industry is cyclical and competitive, with pricing pressure from Chinese module makers and component rivals. The Industrial segment has been soft, and the company remains sensitive to macro conditions and semiconductor capital cycles. Execution on the 1.6T ramp and capacity expansion is not guaranteed. LITE: Valuation is the central risk: LITE trades at a rich forward multiple, so any slowdown in AI capex or a growth miss could compress the stock sharply. Revenue is concentrated among a small number of hyperscale cloud customers, and optical components are historically cyclical with pricing pressure. Competition from Coherent, Broadcom, Marvell, and low-cost module makers can erode share and margins. Execution on new OCS and CPO ramps carries technology and yield risk, and the Industrial Tech segment has lagged the Cloud momentum.
Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell COHR or LITE; figures are approximate and dated (as of August 2026). Verify current data before investing.