Coherent Corp. shares have surged into rarefied territory, climbing 379.3% over the past year as the laser and photonics specialist capitalizes on booming demand for high‑speed datacenter hardware and a strategic capacity ramp, according to a new analysis by Zacks Investment Research. The rally far outpaced the industry’s 29.4% gain and the broader Zacks S&P 500 Composite’s 35.6% advance over the same period.
The company’s latest quarterly results show the datacenter and communications business is now the dominant revenue driver, accounting for 72% of sales in Coherent’s second quarter of fiscal 2026, up from 63% a year earlier. That segment posted year‑over‑year revenue growth of 33.5%, helped primarily by rising orders for 800‑gig and 1.6‑terabit transceivers and by sales of Optical Circuit Switch Systems. Zacks credits Coherent’s ability to scale Indium Phosphide production — including a ramp of 6‑inch wafer manufacturing across facilities in Sherman and Jarfälla — with enabling the company to meet accelerating demand tied to artificial‑intelligence infrastructure buildouts.
While datacenter work drove the outsize gains, Coherent’s industrial business showed signs of recovery. Revenues in that segment rose 4% sequentially in the quarter, led by industrial lasers and engineered materials and buoyed by strong orders from semiconductor capital equipment customers. That diversification, Zacks notes, helps temper reliance on a single end market even as the company pivots more of its operations toward datacenter components.
Coherent’s balance sheet also reflected incremental strengthening at the end of the quarter. Cash and equivalents rose to $899 million from $875 million in the prior quarter, while reported current debt stood at $106 million. The company’s current ratio was 2.25 — notably above the industry average of 1.57 — and times interest earned improved to 2.5 times from 2.2 times the previous quarter. Long‑term debt remained at $3.2 billion as of December 2025, but its share of total capital declined to 26.8% from 34.9% in the prior period, signaling a reduction in leverage pressure.
Investors are being asked to weigh the company’s operational momentum against valuation risk after a near‑quadrupling of the share price. The growth narrative centers on Coherent’s vertical integration and U.S. manufacturing expansion, which Zacks says have given the firm a strategic edge in supplying high‑speed transceivers and related photonics components to hyperscalers and cloud providers. Yet the concentration of revenue in the datacenter and communications segment leaves Coherent exposed to swings in spending by a relatively small set of large customers.
Analysts and investors will be watching upcoming demand trends for AI infrastructure and hyperscale networking closely, as well as the company’s ability to sustain margin gains while absorbing the costs of expanded wafer capacity. For now, Coherent’s financials and production ramps underpin the company’s recent outperformance, but the steep price appreciation raises questions about how much further the stock can run absent continued robust ordering from datacenter customers.