What Needs To Be True To Buy Coherent Stock Now?

Coherent (COHR) makes optical transceivers and other parts for AI data centers, and customers are ordering years ahead. On the fiscal Q4 2026 call, management said fiscal 2027 is basically booked out. The hard part is the price. Coherent stock returned 196% over the past twelve months, against 16.0% for the S&P 500. How much profit growth are you paying for at today’s price?

Profit Must More Than Triple To Match The Index

Coherent’s P/E shows how much profit growth you are paying for. A P/E is the share price divided by a year of profit per share. Put simply, it is what you pay for each dollar of yearly profit. Coherent’s P/E is 77.6, against 21.4 for the S&P 500.

Now hold the share price where it is today. For Coherent’s P/E to come down to the index’s level, its profit would have to be about 3.6 times today’s. So you are paying now for profit that Coherent has not earned yet. If that profit arrives, the P/E falls without the share price having to fall.

What Does Coherent Earn Today?

Coherent earned $0.8 billion in net profit over the past twelve months, on revenue of $7.1 billion. That is a net margin of 11.3%, below the 13.1% for the S&P 500. Coherent keeps a smaller share of its sales as profit than S&P 500 companies do as a group.

So buyers are not paying up for what Coherent earns today. They are paying for profit Coherent has not earned yet, because its sales are growing fast. Revenue in fiscal Q4 2026 was a record $2.05 billion, up 34% from a year earlier. Management said demand from AI data centers and communications customers drove the increase.

Coherent Needs To Build As Fast As It Sells

Coherent already has the orders, so its growth now depends on how much it can produce. Management said the company is booked through the end of calendar 2027. Its long-term customer agreements also commit customers to buy a minimum amount, which management calls minimum demand guarantees.

The limit is production. Management named indium phosphide capacity as its primary constraint. Coherent manufactures indium phosphide in-house. Management said Coherent can grow its sales as fast as it can increase production. Management also said it was on track to double its indium phosphide output capacity from a year earlier. Its target date was the end of fiscal Q1 2027, one quarter ahead of its original plan.

Management forecast higher sales. For fiscal Q1 2027, it guided revenue of $2.2 billion to $2.4 billion, up from $2.05 billion in fiscal Q4. Results for that quarter are pending. Management also expects quarterly revenue to pass $3 billion for the first time by the end of fiscal 2027. If the build runs late, booked orders ship later, and the profit you are paying for arrives later too.

Coherent has orders through calendar 2027, but it is short of the indium phosphide capacity needed to fill them. Coherent’s next report covers fiscal Q1 2027. Revenue at or above the guided range, with indium phosphide output capacity doubled as planned, would suggest Coherent is building on schedule. Revenue below $2.2 billion would be the first sign that Coherent’s capacity is falling behind its orders. The profit you are paying for would then arrive later.

Does This Mean You Should Act On COHR?

Our purpose is to inform you with unique data so you make the right investment decisions. That said, betting on a single stock is always risky, no matter which direction you choose.

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