|Founder(s)||Bill Elfers, Dan Gregory|
|Headquarters||2550 Sand Hill Road
Menlo Park, California, U.S.
|Total assets||$2 billion|
Greylock Partners is one of the oldest venture capital firms, founded in 1965, with committed capital of over $2 billion under management. The firm focuses on early stage companies in the consumer, enterprise software and infrastructure as well as semiconductor sectors.
Greylock was founded in 1965 by Bill Elfers and Dan Gregory, joined shortly thereafter by Charlie Waite. Bill and Charlie had both worked at American Research and Development Corporation—one of the country’s first venture capital firms—while Dan was an investment manager at John P. Chase. The original capital ($9 million in total) was committed by a group of six prominent families, all of whom are still investors in Greylock. Over the ensuing 43 years, Greylock has raised a series of partnerships, with current committed capital in excess of $2 billion, and helped build over 300 growth companies.
Greylock Partners is organized in a series of thirteen limited partnerships begun in 1965, 1973, 1979, 1983, 1985, 1987, 1990, 1994, 1997, 2000, 2001, 2005 and 2009. On 2nd November, 2009 Greylock announced $575 Million Fund and hired Reid Hoffman, LinkedIn Co-Founder, as Partner. In 2006, Greylock launched Greylock Israel, a separate fund dedicated to Israel. Committed capital across the Greylock partnerships exceeds $2 billion. Greylock's limited partners include the nation’s most prestigious university endowments, major American industrial families and not for profit foundations. Greylock has had all of its limited partners participate in all partnerships subsequent to their original investment.
Investment Areas of Focus 
- Consumer and Services: Financial, Healthcare, Internet, Mobile, Retail, Systems Integration.
- Enterprise Infrastructure: Compute/Data Center, Management, Networking, Security, Storage.
- Enterprise Software: Applications, Software-as-a-Service (SaaS)
- Semiconductor: EDA, Networking, Wireless
Other involvements 
- William W. Helman, a partner in the firm, is a member of the board of the Harvard Management Company.
- Final line of Aneel Bhusri Forbes profile: "Personal distraction: obsessed with the Boston Red Sox." Bhursi was vice chairman at PeopleSoft before joining Greylock.
- Henry F. McCance, Greylock Chairman Emeritus, purchased of 1.18% share in New England Sports Ventures, owner of the Red Sox, for $14 million.
- Boston's Greylock Partners moves HQ to Silicon Valley
- "Members of the Board of Directors", Harvard Management Company web page. Retrieved 2011-03-20.
- "The Midas List: #8 Aneel Bhusri", Forbes, 01.29.09 6:00 PM ET. Retrieved 2011-03-20.
- Healy, Beth, "Deal gives glimpse of Sox value", Boston Globe; via "Psst -- N.Y. Times, you're in the wrong business" by Jon Friedman, MarketWatch; both April 23, 2010; also "New York Times Company Sells Small Part of Its Red Sox Holdings". Retrieved 2010-05-04.