Greylock Partners is one of the oldest venture capital firms, founded in 1965, with committed capital of over $3.5 billion under management. The firm focuses on early-stage companies in consumer and enterprise software, and has become a significant investor in artificial intelligence startups, including Inflection AI and Abnormal Security (though Abnormal Security is not in the provided list, so I will use a generic link or omit; I will use Artificial intelligence for AI and mention companies without links if not in list). The firm is headquartered in Silicon Valley, with a history of backing transformative technology companies.
History
Greylock was founded in 1965 in Cambridge, Massachusetts by Bill Elfers and Dan Gregory, joined shortly thereafter by Charlie Waite. Elfers and Waite had both worked at American Research and Development Corporation. The original capital of $10 million was committed by a group of six families. The company opened a second fund in 1973. The company opened its first office in Silicon Valley in 1999.
Greylock closed its 12th fund in 2005 with $500 million. In 2009, Greylock relocated its headquarters from the original Boston location to Silicon Valley. Also in 2009, Greylock opened its 13th fund with $575 million. In 2011, the 13th fund was increased to $1 billion. The company organized a 14th fund in 2013 with $1 billion.
In 2014, Greylock launched Communities, a series of networking events centered on areas like design, big data, infrastructure engineering, user growth, data science, and network security. The communities are composed of product managers, engineers, and technologists from Silicon Valley's largest and fastest growing companies who meet once a quarter. Their branch in Israel formerly known as Greylock IL was rebranded as 83north in January 2015.
The company organized a 15th fund in 2016 with $1 billion. In 2020, it organized a 16th fund with $1 billion, and in 2021, the company raised an additional $500 million for the 16th fund to be used exclusively on seed deals. In 2023 the company announced they had raised $1 billion for the 17th fund. The 18th fund, of $1.5 billion, was raised by 2026 and they estimated that they would invest in about 25 companies from the fund.
Investment Focus and AI Portfolio
Greylock primarily targets early-stage startups in the consumer and enterprise software sectors. In recent years, the firm has made notable investments in AI companies, reflecting a broader trend in venture capital. One prominent example is Inflection AI, a company focused on developing large language models and conversational AI systems. Another is Abnormal Security, which uses machine learning to enhance email security. These investments align with Greylock's strategy of backing companies that leverage generative AI and deep learning technologies.
Greylock's partners bring deep industry expertise. For instance, Reid Hoffman, a co-founder of LinkedIn, is a partner and has been instrumental in AI-related deals. Mustafa Suleyman, co-founder of DeepMind, also joined as a partner, further strengthening the firm's AI focus. This expertise helps Greylock identify and nurture promising AI startups.
Leadership and Partnerships
Greylock's partners include David Sze, Reid Hoffman, and Mustafa Suleyman. These individuals have extensive backgrounds in technology and entrepreneurship. Reid Hoffman is known for his work in social networks and AI ethics. Mustafa Suleyman has been a key figure in the development of DeepMind and later founded Inflection AI. David Sze has been with Greylock for many years, focusing on consumer internet and enterprise software.
The firm's partnership model emphasizes hands-on support for portfolio companies, providing guidance on product strategy, hiring, and scaling. This approach has been critical to the success of many startups.
Impact and Legacy
As one of the oldest venture capital firms, Greylock has a long track record of successful investments. Its early focus on software has evolved to include AI, and the firm has been an early backer of companies that have become industry leaders. The relocation to Silicon Valley in 2009 positioned Greylock at the heart of the tech ecosystem, enabling closer ties with entrepreneurs and innovators.
Greylock's commitment to early-stage investing has helped shape the landscape of consumer and enterprise software. With over $3.5 billion under management, the firm continues to deploy capital into new funds, such as the 18th fund raised by 2026. The firm's influence extends beyond financial returns, as it contributes to the development of emerging technologies like neural networks and transformers.
Future Outlook
Looking ahead, Greylock is likely to continue its focus on AI and software. The firm's investments in companies like Inflection AI and Abnormal Security suggest a strategic bet on the growth of machine learning applications. As AI technologies advance, Greylock's portfolio may expand into areas such as autonomous driving (though not in list, I will use Waymo or Cruise as examples) and healthcare AI. The firm's ability to adapt to technological shifts has been a hallmark of its longevity.
With the 18th fund, Greylock plans to invest in approximately 25 companies, indicating a selective approach. The firm's partners are well-positioned to identify the next wave of innovation, leveraging their experience and networks. As of 2026, Greylock remains a key player in the venture capital landscape, with a strong emphasis on AI-driven startups.