Don Valentine

Don Valentine
Born	Donald Thomas Valentine June 26, 1932
Birthplace	New York City, U.S.
Died	October 25, 2019 Woodside, California, U.S.
Nationality	American
Occupation	Venture capitalist
Known for	Founder of Sequoia Capital
Education	Fordham University (BA)
Awards	Computer History Museum Fellow

Donald Thomas Valentine (June 26, 1932 – October 25, 2019) was an American venture capitalist and the founder of Sequoia Capital, one of the most prominent venture capital firms in Silicon Valley. Over a career spanning more than four decades, Valentine helped finance and shape some of the most consequential technology companies of the late twentieth and early twenty-first centuries, including Apple, Atari, Cisco Systems, Electronic Arts, Google, LSI Logic, Microchip Technology, NVIDIA, Oracle, and Yahoo. A former salesman who made his way from the semiconductor industry into venture investing, Valentine brought to the field a distinctive, market-first philosophy: he evaluated startups primarily on the size and trajectory of the markets they addressed rather than on the credentials or charisma of their founders. His blunt, Socratic questioning style became a defining feature of Sequoia's culture and helped establish the firm's reputation for discipline in early-stage technology investing. Valentine founded Sequoia Capital in 1972, before either "Silicon Valley" or "venture capital" had entered common parlance, and over the ensuing decades the firm's portfolio companies came to represent a substantial share of the total value of the NASDAQ stock exchange. At the time of his death in 2019, Valentine was remembered as one of the architects of the modern venture capital industry and a figure whose investment decisions helped define the trajectory of the global technology sector.

Early Life

Donald Thomas Valentine was born on June 26, 1932, in New York City. He grew up in the New York metropolitan area during the Great Depression and World War II, experiences that shaped his practical, no-nonsense outlook. Valentine attended Mount Saint Michael Academy, a Catholic secondary school in the Bronx.

After completing his secondary education, Valentine enrolled at Fordham University, the Jesuit institution in the Bronx, where he earned a Bachelor of Arts degree in 1954. His education at Fordham, grounded in the liberal arts and the Jesuit tradition of rigorous intellectual inquiry, would later be reflected in the probing, Socratic method he applied to evaluating entrepreneurs and their business plans.

Following his graduation from Fordham, Valentine served a brief period of military service that brought him to California for the first time. The experience proved formative; rather than returning permanently to the East Coast, Valentine chose to remain in the region, drawn to the burgeoning electronics industry that was beginning to take root in what would later become known as Silicon Valley. This decision to stay in California positioned Valentine at the geographic and temporal epicenter of the American technology revolution.

Education

Valentine received his Bachelor of Arts degree from Fordham University in 1954. Fordham, a Jesuit university founded in 1841, provided Valentine with a classical liberal arts education. In later years, Fordham recognized Valentine as one of its most accomplished alumni, noting his pivotal role in the development of Silicon Valley and the venture capital industry. Valentine's lack of an engineering or technical degree was unusual among the early leaders of Silicon Valley's investment community, but his sales background and market orientation proved to be distinctive assets in evaluating technology companies.

Career

Early Career in the Semiconductor Industry

Before entering venture capital, Valentine built a career in the semiconductor and electronics industries, an experience that gave him deep firsthand knowledge of the technology market. He worked at Fairchild Semiconductor, a company that served as a crucible for many of Silicon Valley's future leaders, and later at National Semiconductor. At these companies, Valentine worked primarily in sales and marketing, developing an acute understanding of how technology products found their way to customers and how market demand shaped the success or failure of new innovations.

His time at Fairchild Semiconductor was particularly significant. Fairchild was one of the foundational companies of the semiconductor industry, and its alumni—often referred to as the "Fairchildren"—went on to found or lead dozens of important technology firms. Valentine's colleagues and contacts from this period formed the nucleus of the professional network he would later draw upon as a venture capitalist. His sales role at Fairchild and National Semiconductor taught him to think in terms of markets first and technology second, a perspective that would become the cornerstone of his investment philosophy.

Founding of Sequoia Capital

In 1972, Valentine founded Sequoia Capital, establishing the firm in Menlo Park, California, at the heart of what was rapidly becoming the world's foremost technology corridor. The founding of Sequoia came at a moment when venture capital was still a nascent profession, not yet widely understood or practiced as a distinct field. Valentine later noted that he started the firm before the terms "Silicon Valley" and "venture capital" had been coined in their modern usage.

Valentine's approach to venture investing was grounded in the lessons he had absorbed during his career in the semiconductor industry. He emphasized the primacy of large, growing markets over the personal qualities of individual entrepreneurs. In his view, a large and expanding market could compensate for many deficiencies in a startup's management team, while even the most talented founders would struggle to succeed in a small or stagnant market. This market-first philosophy distinguished Valentine from many of his contemporaries in the venture capital industry, who placed greater weight on the backgrounds and track records of founding teams.

Valentine was also known for his blunt, often abrasive questioning style. He subjected entrepreneurs who pitched him to rigorous, Socratic cross-examination, probing their assumptions about market size, competitive dynamics, and the scalability of their business models. This approach could be intimidating, and Valentine developed a reputation for being one of the toughest audiences in Silicon Valley. He was described as favoring humble founders who were open to feedback and willing to learn, rather than those who projected overconfidence or inflexibility.

Under Valentine's leadership, Sequoia Capital became known for a disciplined, focused approach to early-stage investing. The firm concentrated on technology companies, particularly those positioned at early inflection points in large markets—moments when new technologies were beginning to gain traction but had not yet achieved widespread adoption. This focus allowed Sequoia to identify and invest in companies at stages when valuations were relatively low but growth potential was substantial.

Key Investments

Valentine's most celebrated investments read as a roster of companies that defined successive eras of the technology industry. Among the earliest and most consequential was his investment in Apple Computer. In the mid-1970s, Valentine was introduced to Steve Jobs and Steve Wozniak, the co-founders of Apple, and Sequoia's backing helped the young company grow from a garage startup into a major force in personal computing. Valentine also invested in Atari, the pioneering video game company founded by Nolan Bushnell, which helped establish the consumer electronics entertainment industry.

In the 1980s, Valentine made a series of investments that further cemented Sequoia's reputation. He backed Cisco Systems, the networking equipment company founded by Leonard Bosack and Sandy Lerner, which became a dominant force in the infrastructure underlying the internet. Valentine also invested in Oracle Corporation, the database software company founded by Larry Ellison, which grew into one of the world's largest enterprise technology firms. Additional investments from this period included LSI Logic and Electronic Arts.

Valentine's investment in Cisco Systems was regarded as one of the most successful venture capital deals in history. Sequoia's relatively modest initial investment in the company yielded returns many times over as Cisco grew to become one of the most valuable publicly traded corporations in the world during the internet boom of the 1990s.

As the technology industry evolved, Sequoia under Valentine's guidance continued to identify transformative companies. The firm invested in Yahoo, one of the first major internet portals, and later in Google, which would grow to become the world's dominant search engine and one of the most valuable companies ever created. Other notable investments associated with Sequoia during and after Valentine's active tenure included NVIDIA, YouTube, Airbnb, and WhatsApp, though some of these later investments were made by Valentine's successors at the firm, including Michael Moritz and Doug Leone, whom Valentine had recruited and mentored.

Investment Philosophy

Valentine articulated a clear and consistent investment philosophy throughout his career. His central tenet was that the target market mattered more than almost any other factor in determining a startup's potential. He frequently emphasized the importance of investing in companies that addressed large, rapidly growing markets, reasoning that such markets provided the scale necessary to generate significant returns.

He was skeptical of entrepreneurs who focused too narrowly on their technology without demonstrating a clear understanding of the market they intended to serve. In his view, the best technology in the world was of limited value if it did not address a genuine, large-scale need. He often asked entrepreneurs to identify the problem they were solving and to explain why the market for their solution was large and growing.

Valentine was also attentive to timing—the concept of investing at an "inflection point" when a new technology or market was poised for rapid growth. He sought companies that were positioned to benefit from fundamental shifts in technology adoption, such as the transition from mainframe to personal computing, the emergence of computer networking, and the rise of the internet.

His approach to working with portfolio companies reflected his sales background. Valentine was willing to be deeply involved in the strategic direction of companies he backed, and he was known for helping startups recruit experienced management teams when he believed the founders lacked the operational skills to scale the business. This willingness to intervene in management decisions was sometimes controversial, but Valentine viewed it as essential to maximizing a company's chances of success.

Board Service and Later Career

Throughout his career, Valentine served on the boards of directors of numerous technology companies. He was a board member at NetApp, among other firms, and remained active in advising Sequoia's partners and portfolio companies for many years after stepping back from day-to-day investment activities.

Valentine gradually transitioned leadership of Sequoia Capital to the next generation of partners, most notably Michael Moritz and Doug Leone, whom he had recruited to the firm. This succession planning was itself considered one of Valentine's significant contributions to Sequoia, as the firm's continued success after his retirement from active investing demonstrated the durability of the culture and investment discipline he had established.

In 2013, Valentine appeared alongside fellow venture capital pioneer Tom Perkins at TechCrunch Disrupt SF, where the two were featured as titans of the venture capital industry.

Valentine was also featured in the documentary film Something Ventured (2011), which chronicled the history of the venture capital industry in Silicon Valley. The film included interviews with Valentine and other early venture capitalists who helped build the technology industry.

Personal Life

Valentine lived in Woodside, California, a town in San Mateo County on the San Francisco Peninsula, for much of his later life. He was known for maintaining a relatively private personal life despite his prominence in the business world.

Valentine died on October 25, 2019, at his home in Woodside, California, at the age of 87. His death was announced by Sequoia Capital, which issued a tribute describing Valentine as "ever curious" and noting that he had founded Sequoia before the terms "Silicon Valley" and "venture capital" had been coined. The tribute described his enduring impact on the firm's culture and investment approach.

His passing was widely noted in the technology and business press, with obituaries appearing in The New York Times, Forbes, and numerous other publications. Fordham University also issued a statement mourning the loss of one of its most distinguished alumni, describing Valentine as "a Silicon Valley and venture capital pioneer" whose investments "helped build massively influential technology companies."

Recognition

Valentine was named a Fellow of the Computer History Museum in Mountain View, California, in recognition of his contributions to the development of the technology industry through venture capital investment.

He was recognized by Forbes as one of the most important figures in the history of venture capital. A 2005 Forbes profile described his investment approach and his role in shaping the modern venture capital industry.

Valentine's appearance in the 2011 documentary Something Ventured brought his story to a wider audience, as the film was screened at film festivals and received positive reviews for its chronicle of the pioneers of venture investing.

Fordham University recognized Valentine as one of its most notable alumni, and the university's tribute upon his death highlighted the scale of his influence on the technology industry and the venture capital profession.

Within the venture capital community, Valentine was frequently cited as one of the most influential practitioners in the history of the field. His emphasis on market size, early inflection points, and disciplined investment selection became widely adopted principles. Sequoia Capital's continued prominence under the leadership of the partners he recruited was seen as a testament to the enduring value of the culture and methodology he established.

Legacy

Valentine's legacy is closely tied to the growth and influence of Sequoia Capital, which he led from a small firm in the early 1970s to one of the most consequential venture capital organizations in the world. By the time of his death, Sequoia had backed companies whose combined market capitalization represented a substantial percentage of the total value of the NASDAQ stock exchange. The firm's portfolio included companies that had fundamentally transformed industries ranging from personal computing and enterprise software to internet search, social media, and the sharing economy.

Valentine's market-first investment philosophy became one of the most widely discussed frameworks in the venture capital industry. His insistence on evaluating the size and trajectory of a company's target market before considering other factors influenced generations of investors, both within Sequoia and at competing firms. The question "Why does this market matter?"—a formulation frequently attributed to Valentine—became a standard element of the venture capital evaluation process.

His approach to succession planning at Sequoia was also regarded as a significant achievement. Many venture capital firms of his era struggled with generational transitions, but Valentine's recruitment and mentoring of Michael Moritz, Doug Leone, and other partners ensured that Sequoia maintained its position of influence well into the twenty-first century. The firm's investments in companies such as Google, YouTube, Airbnb, and WhatsApp were made by partners Valentine had brought into the organization, extending the reach of his institutional legacy beyond his personal investment career.

Valentine's trajectory from the semiconductor sales floors of Fairchild and National Semiconductor to the founding of Sequoia Capital illustrated a broader pattern in Silicon Valley's development: the transformation of industry insiders with operational experience into investors who could evaluate technology companies with a practitioner's eye. His career demonstrated that deep market knowledge, rather than formal technical training, could be a decisive advantage in identifying and nurturing transformative companies.

Upon his death, Sequoia Capital stated: "Don Valentine founded Sequoia in 1972, before the terms 'Silicon Valley' and 'venture capital' had been coined. Ever curious, he relished the quest to find daring founders with original ideas aimed at big markets."