Cisco
American multinational technology company
Cisco Systems, Inc., doing business as Cisco, is an American multinational technology conglomerate corporation that develops, manufactures, and sells hardware, software, telecommunications equipment and other high-technology services and products focused on networking, cybersecurity and AI. Cisco specializes in specific tech markets, such as the Internet of things (IoT), domain security, videoconferencing, and energy management, including products such as Webex, OpenDNS, Jabber, and Jasper. The company is headquartered in San Jose, California, and, as of June 29, 2026, has a market capitalization of $461 billion.
Cisco Systems was founded in December 1984 by Leonard Bosack and Sandy Lerner, two Stanford University computer scientists. They pioneered the concept of a local area network (LAN) being used to connect distant computers over a multiprotocol router system. The company went public in 1990 and, by the end of the dot-com bubble in 2000, had a market capitalization of $500 billion, surpassing Microsoft as the world's most valuable company, prior to losing 80 percent of its value by 2002, as the market bubble burst.
Cisco stock (CSCO), trading on Nasdaq since 1990, was added to the Dow Jones Industrial Average on June 8, 2009. It is also included in the S&P 500, Nasdaq-100, and the Russell 1000 indices.
History
1984–1995
Cisco Systems was founded in December 1984 by Sandy Lerner, along with her husband Leonard Bosack. Lerner was the director of computer facilities for the Stanford University Graduate School of Business. Bosack was in charge of the Stanford University computer science department's computers.
Begin with the source’s own compact description: “Cisco” is american multinational technology company. The dossier treats that line as a proposition to test through Cisco, American and multinational, not as a finished interpretation.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Sep 18, 2026. The linked authority identifier is Q173395. VIAF identifies the subject as 152988344. The Library of Congress control number is n98054837. 3 of 5 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 2026, 1984, 1990 and 2000.
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This entry incorporates text from “Cisco” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.