# Coherent: The Company That Gets Stronger in the CPO Era

### Rethinking Coherent Through What Management Confirmed Directly

A stock that traded at $77 a year ago now sits at $385. In early June it hit an all time high of $440. The one year return is north of 370%. Over that stretch NVIDIA poured $2B directly into the company, it joined the S&P 500 this past March, and its market cap quietly climbed toward $75B. This is the story of Coherent (NYSE: COHR), standing at the center of this year’s optical sector rally.

Faced with a stock that has nearly 5x’d in a year, the question an investor least wants to ask is  
“is it still okay to buy here?”  
The discomfort comes from the fact that any answer feels unsettling.  
But this is one of the rare names where you can frame that question differently. There is something to look at before the share price, and that is the order book.

The 2026 production slots are already sold out. The 2027 volume is close to fully booked, and customers are already placing orders for 2028. With NVIDIA, by the company’s own account, there is a long term agreement that locks in volume visibility and a pricing framework through 2030. A components company taking three years of orders in advance is an unusual sight even by the standards of semiconductor history.

Once you reach this point, the rules of the game change.  
The variable that determines revenue shifts from demand to supply. The places to sell are already locked in, so how many wafers come out of the fab is the revenue, and the question an investor needs to ask narrows to one.

Is this a company that builds as much as it promises?  
This piece dissects Coherent from the ground up to answer that question. Public results and disclosures form the foundation, but one thing is added on top.  
_**These are details confirmed directly with Coherent management, the kind that do not surface on a quarterly earnings call.**_

I hope this proves useful, even in a small way, to investors interested in Coherent.

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**Table of Contents**  
1. What kind of company is Coherent  
2. A map of eight growth engines  
3. The technical moat, and the execution that grows it  
4. What CPO does for Coherent  
5. Financial structure, and the path of margins  
6. The other side, and claims that remain unverified  
7. Investment takeaways

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## 1. What Kind of Company Is Coherent

CEO Jim Anderson defines his company in a single sentence whenever he gets the chance.

**A photonics company**  
It makes photons, directs and sends them, or detects them. Lasers are the making side, optical fiber and lenses are the sending side, and photodetectors are the detecting side.

Today’s Coherent is the product of several companies layered on top of one another. The roots trace to II-VI, founded in 1971, which survived fifty years on optical materials and components. II-VI acquired Finisar, the original name in optical transceivers, in 2019 to build out the body of its data center optical communications business, and in 2022 it acquired the storied laser house Coherent before renaming itself Coherent. Put simply, the transceiver DNA came from Finisar, the materials and components DNA from II-VI, and the laser systems DNA from the old Coherent. Headquarters sits in Saxonburg, Pennsylvania, and the company runs 50 manufacturing plants worldwide. In the US alone it has 20 production sites across 13 states.

Start with why this company shows up in the AI infrastructure conversation at all. An AI data center ties tens of thousands of GPUs together to use them as a single giant computer. The GPUs have to exchange data for training or inference to run, but electrical signals weaken and burn a lot of power when they travel far over copper. So beyond a certain distance the electrical signal is converted into light and sent over optical fiber. The device that handles this conversion is the optical transceiver. Think of it as a translator that moves between electricity and light. As GPU counts rise, the number of translators has to rise with them, so the structure is one where optical transceiver demand grows as AI investment grows.

Look at the revenue mix and it becomes clear what this company is a bet on. Data center and communications make up 75% of revenue, industrial 25%. As of FY26 Q3 (ending March 2026), the data center/communications segment posted $1.36B in revenue, up 40% year over year, while industrial came in at $444M. The industrial side covers areas like laser processing and display equipment, and the company has narrowed the portfolio further toward data center by divesting its aerospace and defense business and its Munich, Germany unit.

Even if the word photonics sounds unfamiliar, the technology is already part of daily life. Face recognition on a smartphone, automotive LiDAR, and the laser processing that cuts displays and batteries all live in this domain, and Coherent supplies components across the board. What moves the stock right now, though, is just one piece of it: the AI data center.

Anderson has been CEO for just over two years now. He grew the computing business at AMD and engineered a turnaround as CEO of Lattice Semiconductor. Non-GAAP gross margin, which sat in the 37% range around the time he arrived, has climbed to 40% in the latest quarterly guidance, and that is the scorecard for these two years. The biggest change a semiconductor volume manufacturing expert brought to an optics company is the move to 6-inch InP.

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## 2. A Map of Eight Growth Engines

The map of growth drivers the company has been laying out in front of investors lately has eight cells. Four already running at full tilt, and four more that get added on quarter by quarter. Once you understand where these eight plug into the data center network, the whole picture of the company comes together. That requires the network structure first.

Connectivity in an AI data center divides into three tiers.

Scale-up is the shortest segment, connecting GPUs to one another inside a single rack. For now it is almost entirely copper.

Scale-out is the segment connecting rack to rack, and it has already crossed over to optical.

Scale-across is the longest segment, linking data center to data center.

The farther the distance, the more light wins, so optical penetration has progressed from the outside in.

The four engines already running look like this.

1. Data center optical transceivers. 800G is the workhorse and 1.6T has entered its production ramp.
2. DCI (data center interconnect) transceivers. A single AI data center building has limits on power and space, so hyperscalers have begun tying together campuses tens of kilometers apart and running them like one cluster. What connects them is DCI, and this is the segment the coined term scale-across points to.
3. ZR and ZR+ transport. This is a product family that handles longer distances using coherent optical communication, which leverages not just the intensity of light but its phase, technology that once lived in telecom equipment rooms and has now come down to data center interconnect.
4. Merchant optical components. This is the business of selling lasers and optical components to other companies that build their own transceivers. Competitors are also customers, which is hardly unusual in this industry.

On top of this, four new engines attach in timeline order. Multi-rail systems begin generating revenue in the first half of 2026, and OCS (optical circuit switch) is in adoption with multiple hyperscalers. OCS is a switch that steers the path of light with tiny mirrors instead of converting it to electricity, so power and latency drop sharply, and it has the advantage that even as speed generations change you only need to swap the transceivers at either end.

By Anderson’s account, only two companies in the world produce high quality OCS at volume, and Coherent is one of them. The third is CPO, the real body of this company’s future, and the last is thermal, chip cooling. The target is revenue in the second half of 2027 from a cold plate built on a proprietary material called Thermadite, which pulls heat away about twice as well as copper and lets the chip run at higher clocks. An optics company moving into cooling looks surprising, but the product comes out of half a century of depth in optical materials.

The demand picture is as described above. 2026 volume sold out, 2027 nearly closed, 2028 orders beginning to come in. In the semiconductor industry, two and a half years of orders sitting in advance is a rare sight.

On top of that, long term supply agreements with multiple large customers including NVIDIA are in place, so the company faces no demand constraint at all and the only constraint is supply capacity.

That is the message Anderson repeats.  
This one sentence is the starting point for analyzing this company. What technical moats Coherent holds, how those moats get repriced in the CPO era, how an already elevated valuation is justified, and what scenario to approach the investment through. The next sections analyze all of this in detail.