Compare · GLW vs IDT
GLW vs IDT
Side-by-side comparison of Corning Incorporated (GLW) and IDT Corporation (IDT): market cap, price performance, sector, and recent activity on the wire.
Summary
- GLW operates in Industrials, while IDT operates in Telecommunications - the two are in different parts of the market.
- GLW is the larger of the two at $121.36B, about 60.3x IDT ($2.01B).
- Over the past year, GLW is up 59.7% and IDT is up 71.0% - IDT leads by 11.3 points.
- IDT has been more active in the news (11 items in the past 4 weeks vs 9 for GLW).
- GLW has more recent analyst coverage (25 ratings vs 0 for IDT).
- Company
- Corning Incorporated
- IDT Corporation
- Price
- $138.39-1.80%
- $82.23+1.46%
- Market cap
- $121.36B
- $2.01B
- 1M return
- -4.04%
- +18.27%
- 1Y return
- +59.67%
- +70.99%
- Industry
- Telecommunications Equipment
- Telecommunications Equipment
- Exchange
- NYSE
- NYSE
- IPO
- News (4w)
- 9
- 11
- Recent ratings
- 25
- 0
Corning Incorporated
Corning Incorporated engages in display technologies, optical communications, environmental technologies, specialty materials, and life sciences businesses worldwide. The company's Display Technologies segment offers glass substrates for liquid crystal displays and organic light-emitting diodes used in televisions, notebook computers, desktop monitors, tablets, and handheld devices. Its Optical Communications segment provides optical fibers and cables; and hardware and equipment products, including cable assemblies, fiber optic hardware and connectors, optical components and couplers, closures, network interface devices, and other accessories for various carrier network applications. This segment also offers operator-grade distributed antenna systems; optical network evolution wireless platform; subscriber demarcation, connection and protection devices, various digital subscriber line passive solutions, and outside plant enclosures; and coaxial RF interconnects for the cable television industry and microwave applications. The company's Environmental Technologies segment offers ceramic substrates and filter products for emissions control in mobile, gasoline, and diesel applications. Its Specialty Materials segment manufactures products that provide material formulations for glass, glass ceramics, and fluoride crystals. The company's Life Sciences segment offers laboratory products comprising consumables, such as plastic vessels, specialty surfaces, cell culture media, and serum, as well as general labware and equipment under the Corning, Falcon, Pyrex, and Axygen brands. The company was formerly known as Corning Glass Works and changed its name to Corning Incorporated in April 1989. Corning Incorporated was founded in 1851 and is headquartered in Corning, New York.
IDT Corporation
IDT Corporation operates in the communications and payment industries in the United States and internationally. The company operates through two segments, Telecom & Payment Services, and net2phone. The Telecom & Payment Services Services segment offers national retail solutions, such as point of sale network; mobile top-up; and carrier services, as well as an international money remittance service and international long-distance calling service under the BOSS Revolution brand name. The net2phone segment provides Unified Communications as a Service, a cloud communications service for businesses; and cable telephony services under the net2phone brand name. IDT Corporation was founded in 1990 and is headquartered in Newark, New Jersey.
Latest GLW
- Lumentum, Astera Labs, and Corning to Demonstrate 1060 nm VCSEL-Based PCIe over Optics for AI Rack-Scale Connectivity at the 2026 OCP Global Summit
- Corning Announces Quarterly Dividend
- SEC Form 4 filed by Director Martin Kevin J
- SEC Form 4 filed by Director Ferguson Roger W. Jr.
- SEC Form 4 filed by Director Cummings Robert F Jr
- SEC Form 4 filed by Director Burns Stephanie
- Bernstein initiated coverage on Corning with a new price target
- AT&T and Corning Team Up to Engineer the Connected World with Fiber
- Lumentum, Qualcomm, and Corning to Demonstrate High-Density 1060 nm VCSEL Optical D2D Connectivity for AI Scale-Up at ECOC 2026
- SEC Form 8-K filed by Corning Incorporated
Latest IDT
- SEC Form 4 filed by IDT Corporation
- SEC Form 4 filed by IDT Corporation
- SEC Form 4 filed by IDT Corporation
- NRSInsights’ September 2026 Retail Same-Store Sales Report
- SEC Form 4 filed by IDT Corporation
- SEC Form 4 filed by IDT Corporation
- SEC Form 4 filed by IDT Corporation
- SEC Form S-8 filed by IDT Corporation
- SEC Form 10-K filed by IDT Corporation
- IDT Corporation filed SEC Form 8-K: Results of Operations and Financial Condition, Financial Statements and Exhibits