Several trading sessions after its first-quarter fiscal 2027 earnings release on Nov. 4, Coherent Corp. (COHR Quick QuoteCOHR - Free Report) has attracted significant investor interest. Shares of the optical technology company have gained about 10% since the announcement, reflecting optimism about accelerating demand for artificial intelligence (AI) infrastructure and an encouraging growth outlook.

                                                              Image Source: Zacks Investment Research

The rally appears closely linked to Coherent's ambitious revenue projections, expanding profitability targets and improving visibility into future customer commitments. However, following the recent appreciation, investors must evaluate whether the company's fundamentals support further upside.

COHR's Q1 Earnings Beat Supports Its Growth Story

Coherent reported adjusted earnings of $2.09 per share, surpassing the Zacks Consensus Estimate of $2 by 4.5%. Earnings surged 80.2% year over year from $1.16 and increased 20.1% sequentially from $1.74.

Revenues reached a record $2.37 billion, exceeding the consensus estimate by 2.35%. The top line grew 49.9% year over year from $1.58 billion and advanced 15.9% sequentially from $2.05 billion. On a pro forma basis, revenues increased 56% year over year.

Coherent has exceeded consensus EPS estimates in three of the trailing four quarters, while revenues have surpassed expectations in all four quarters.

The results indicate that robust demand for advanced optical solutions is translating into meaningful earnings growth.

Datacenter Momentum Strengthens COHR's Growth Outlook

The Datacenter & Communications segment generated $1.95 billion in revenues, increasing 79% year over year from $1.09 billion and 20.8% sequentially from $1.62 billion.

The segment contributed approximately 82% of total revenues, highlighting Coherent's increasing exposure to AI infrastructure investments.

Datacenter revenues increased 85% year over year, supported by growing demand for high-speed optical connectivity. Scale-across datacenter interconnect revenues exceeded $200 million, approximately quadrupling year over year.

However, Industrial segment revenues declined 14.8% year over year and 2.8% sequentially to $418.6 million, reflecting continued weakness in certain industrial applications.

Nevertheless, the stronger contribution from datacenter-related products more than offset the industrial slowdown, supporting consolidated revenue growth.

Improving Margins Reinforce COHR's Profitability

Coherent's non-GAAP gross margin reached 40.6%, expanding 184 basis points year over year and 37 basis points sequentially.

GAAP gross margin improved to 39.1%, representing expansions of 254 basis points year over year and 66 basis points sequentially.

Non-GAAP operating income increased 78.1% year over year and 23.4% sequentially to $550 million. The corresponding operating margin expanded 368 basis points year over year and 142 basis points sequentially to 23.2%.

                                                                                      Image Source: COHR

Non-GAAP operating expenses increased 35.5% year over year and 9.2% sequentially to $412 million. However, operating expenses as a percentage of revenues declined to 17.4%, demonstrating favorable operating leverage.

These improvements indicate that stronger product demand, pricing optimization and manufacturing efficiencies are supporting profitability alongside business expansion.

Upbeat Guidance Justifies COHR's Post-Earnings Rally

Coherent expects second-quarter fiscal 2027 revenues between $2.55 billion and $2.75 billion. The midpoint of $2.65 billion implies 11.8% sequential growth.

Adjusted earnings are projected between $2.28 and $2.48 per share, indicating 13.9% sequential growth at the midpoint. Non-GAAP gross margin is expected between 40% and 42%, with the midpoint suggesting further improvement to 41%.

More importantly, Coherent anticipates fiscal 2027 pro forma revenue growth exceeding 60%, more than double its fiscal 2026 growth rate.

The company expects quarterly revenues to reach $3 billion before fiscal 2027 ends and $4 billion during fiscal 2028. Its revised profitability objective calls for non-GAAP gross margin exceeding 45% before calendar 2028 ends.

These ambitious targets likely contributed to the positive market reaction by strengthening confidence in sustained AI-related demand.

PhotonLink Expansion Adds Another Growth Catalyst

Coherent's PhotonLink platform represents another promising opportunity. Quarterly PhotonLink revenues are expected to exceed $100 million in March 2027 and $250 million before the end of calendar 2027.

A recently disclosed five-year customer agreement valued at approximately $20 billion provides additional visibility, with associated revenues expected to begin ramping in early calendar 2028.

Meanwhile, the company anticipates its scale-across datacenter interconnect business doubling again before calendar 2027 ends.

However, expanding production capacity remains crucial. Capital expenditures reached $776 million during the quarter and are expected to increase sequentially, potentially weighing on near-term cash generation.

Nevertheless, cash reserves of $2.34 billion and a debt leverage ratio of 1.1 times provide financial flexibility to support these investments.

Optical Industry Peers Confirm Favorable Demand Trends

Lumentum Holdings (LITE Quick QuoteLITE - Free Report) and Fabrinet (FN Quick QuoteFN - Free Report) provide useful comparisons for evaluating Coherent's growth prospects.

Lumentum reported first-quarter fiscal 2027 revenues of $1.26 billion, surging 136.5% year over year and 25.5% sequentially. Its non-GAAP gross margin reached 53.2%, while operating margin improved to 42.3%. Lumentum expects second-quarter revenues between $1.575 billion and $1.625 billion, reflecting sustained demand for optical technologies.

Fabrinet generated quarterly revenues of $1.47 billion, increasing 50.7% year over year, while adjusted earnings climbed 48.6% to $4.34 per share. Fabrinet projects second-quarter revenues between $1.6 billion and $1.65 billion.

Strong results from Lumentum and Fabrinet reinforce favorable industry conditions, supporting Coherent's longer-term expansion prospects.

Is COHR Stock Still a Buy After Its Earnings-Fueled Rally?

Coherent remains an attractive investment opportunity despite its recent share-price appreciation. Accelerating data center demand, expanding optical connectivity requirements and improving operating efficiency provide a solid foundation for sustained growth. The company's increasingly diversified photonics portfolio, supported by long-term customer commitments, strengthens revenue visibility and competitive positioning. Although elevated capital spending, execution challenges and weakness in industrial markets warrant monitoring, these concerns appear manageable given the company's improving profitability and strong demand environment. Its encouraging outlook also suggests that the recent rally reflects strengthening fundamentals rather than temporary enthusiasm. Investors should therefore consider buying COHR stock for growth potential.

COHR currently carries a Zacks Rank #2 (Buy). You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.