Corning Incorporated (GLW) Earnings & Analysis

Latest quarter

Corning’s third-quarter core revenue of $5.1 billion exceeded the consensus of $5.0 billion, while adjusted earnings per share of $0.91 exceeded the $0.89 consensus. Both core sales and core EPS also came in above the company’s own respective guidance ranges of $4.9 billion to $5.0 billion and $0.85 to $0.89.

Corning reported revenue of $4.9 billion, up from $4.1 billion a year earlier, and diluted EPS of $0.86, up from $0.50. Its filing attributed the sales increase primarily to optical communications and solar products. CFO Ed Schlesinger said Optical Communications sales grew 44% year over year to $2.4 billion, while Glass Innovations sales fell 3% to $1.5 billion as memory prices affected end markets.

Corning’s reported gross margin was 37.3%, compared with 37.1% a year earlier, and its operating margin rose to 18.8% from 14.4%. The filing said higher Optical Communications profit was partly offset by temporary costs of ramping solar capacity. Corning reported free cash flow of $516.0 million, compared with $450.0 million a year earlier.

Adjusted EPS is the figure the consensus estimates, not the GAAP EPS above.

What management said on the call

On the call, CFO Ed Schlesinger said enterprise optical sales grew 84% year over year in the third quarter, with generative-AI product sales more than doubling as customers adopted Corning’s products and the company added capacity. He said carrier sales grew 4%, driven by data-center interconnect, and described long-term agreements to supply fiber and connectivity for network expansions.

Asked about supply constraints, CEO Wendell Weeks said customers wanted Corning’s newer high-density fiber products while the company was still ramping them across its manufacturing platforms. He said Corning tends to prioritize long-standing customers and that asking customers to contribute to capacity additions can also influence allocations.

Weeks said customer agreements can include upfront cash for capacity, which Corning returns as customers purchase committed volumes. Schlesinger said the majority of capital excluding maintenance is funded through long-term agreements, although the timing of customer cash and spending can differ from quarter to quarter. He said net customer deposits were $639 million in the first nine months of 2026.

On pricing, Schlesinger said a display-glass adjustment would begin taking effect in the fourth quarter to address a weaker yen and higher material and energy costs. Asked about its timing, he said he did not expect a significant impact in that quarter.

Schlesinger said solar wafer and module production was ramping more slowly than anticipated. Asked about margins, he said solar was below the corporate operating margin and expected profitability to improve slowly as productivity increased. Weeks said Corning’s exposure to Chinese fiber was declining, partly because integrated connectivity products carry higher shipping and tariff costs; he said the company was not seeing significant competitive pressure from it at present.

For the quarter ahead, Schlesinger said Optical Communications would drive most of Corning’s year-over-year growth, with solar also contributing as capacity comes online. Asked about data-center interconnect, he said it would exceed the company’s previous $1 billion end-of-decade target but had not yet set a new target.

Guidance

Corning now plans approximately $2.0 billion in 2026 capital expenditures, primarily to support Optical Communications growth. Its earlier outlook called for about $1.7 billion and potentially somewhat above that level.