50 Years of "Bogle's Madness": How Passive Investing Became a Strategy

The founder of Vanguard built his investment philosophy on rejecting Wall Street’s central promise—to beat the market. Passive investing began with an idea that Wall Street was quick to label as capitulation and madness. American entrepreneur John Bogle offered investors a fund that didn’t promise the one thing that mattered most—beating the market. No betting on winners. In 1976 on Wall Street, where expertise was the primary commodity, this amounted to an admission of one’s own professional inadequacy.

But time has shown that Wall Street was wrong: Bogle’s index fund is turning 50, and he himself has gone down in history as the man who transformed the relationship between individual investors and asset management firms. He articulated his investment philosophy in the simplest terms: don’t look for a needle in a haystack—just buy the whole haystack.

John Bogle was born on May 8, 1929, in Montclair, part of the New York metropolitan area. A few months after Bogle’s birth, the U.S. stock market crashed. The Great Depression stripped his family of their former wealth. Bogle attended Blair Academy, a private school, on a scholarship, and partially paid for his education by working in the school cafeteria. After high school, he enrolled at Princeton University, where he studied economics.

He devoted his thesis to the mutual fund industry, which was still in its infancy at the time. Bogle examined the role these funds play in the economy, how their relationships with clients are structured, and how successfully they manage the money entrusted to them. He identified the main flaw in such funds: high fees and other expenses reduced investors’ returns regardless of the manager’s performance.

John Bogle’s thesis caught the attention of Walter Morgan, founder of the Wellington Fund, one of the oldest funds in the United States. In 1951, he invited Bogle to join Wellington Management as a junior analyst. Bogle rose quickly through the ranks: by the mid-1950s, he had become an assistant fund manager; in 1965, at the age of 35, he was appointed executive vice president; and two years later, he took over as head of the company.

In the late 1960s, the Wellington Fund began to lose investors, and Bogle merged the company with a more aggressive investment firm. In 1973–1974, the market plummeted due to the oil and currency crises, and the new funds suffered heavy losses. As a result, Wellington’s assets declined from $2.6 billion in 1966 to $475–480 million in 1974. Bogle later took responsibility for this disastrous financial performance, and as a result, in January 1974, the board of directors removed him from his position as CEO.

Until the mid-1970s, a private investor who did not want to pick stocks on his own had no choice but to turn to mutual funds. The idea was simple: entrust your money to professionals, and they would find the winning stocks and beat the market. Bolg believed that investors were mistaken in thinking they could find outstanding managers who would always generate alpha: “The simple fact is that selecting a mutual fund capable of outperforming the market over the long term is, to borrow Cervantes’s wonderful expression, like looking for a needle in a haystack.”

In addition, Bogle was dissatisfied with the high costs borne by investors: commissions on buying and selling shares, management fees, and the costs of frequent trades—a “silent robbery” that eroded investors’ returns year after year. Bogle was also dissatisfied with the conflict of interest: management companies earned money from commissions, so decisions that benefited their owners were not always in the best interest of clients.

Bogle pondered how this situation could be changed and came up with the idea of an index fund: a pre-built portfolio of stocks or bonds whose composition mirrors a specific market index. He stated: “An index fund is a rather unexpected hero for the average investor. It is nothing more—and nothing less—than a broadly diversified portfolio, typically managed at the lowest possible cost and without the supposed benefits of a brilliant, resourceful, and top-tier manager. An index fund simply buys and holds the securities in a specific index in proportion to their weight in that index. This concept is simplicity taken to the extreme.”

Bogle wasn't the first person to come up with the idea of a fund that tracks a market index. In his 1973 book *A Random Walk Down Wall Street*, economist Burton Malkiel described a fund that buys hundreds of stocks from a market index and holds them, without spending money on constant trading. This allows management fees to be kept to a minimum.

A year later, economist Paul Samuelson published an article titled “A Challenge to Professional Judgment,” in which he questioned the value of active management: “Academic researchers, even with access to published results, are virtually unable to identify a single manager with exceptional talent… And while this is not an ironclad law, the fact remains.” Samuelson believed that investors did not need outstanding fund managers, but rather a fund that did not try to outperform the market. Bogle cited Samuelson’s article as one of his main sources of inspiration.

By the early 1970s, index strategies were available to large investors: Wells Fargo was creating index portfolios for pension funds, and American National Bank launched a fund for institutional clients that tracked the S&P 500. But they were beyond the reach of individual investors. Bogle created an index fund for the general public—and that is precisely what made him an investment revolutionary.

In September 1974, Bogle incorporated The Vanguard Group, and on August 31, 1976, he launched the First Index Investment Trust (later renamed the Vanguard 500 Index Fund). The fund purchased shares of companies in the S&P 500 in roughly the same proportions as they were weighted in the index. Therefore, investors did not have to build their own portfolios from hundreds of securities; it was enough to invest in a single fund.

In this index, Bogle embodied the core principles of his investment philosophy: the fund did not seek out undervalued companies, rarely made trades, and did not maintain a large team of analysts and portfolio managers—which helped keep expenses low. Bogle did not offer investors protection against market declines or returns higher than the market; instead, he offered a return close to the index, with minimal expenses.

Wall Street ridiculed Bogle’s idea. His refusal to try to beat the market was called a capitulation, and index investing was dismissed as a passing fad that would soon disappear. The fund was even nicknamed “Bogle’s Folly.”

The fund’s initial offering seemed to prove the critics right. Bogle had hoped to raise $50–150 million, but investors contributed only slightly more than $11 million. Bogle later called this result a complete failure. The amount raised was not even enough to purchase standard lots of shares in all 500 companies in the index, so the fund could not immediately replicate the S&P 500 as intended.

It took the fund six years for its assets to exceed $100 million, and a significant portion of that money came not from new investors but from a merger with another fund.

The turning point came after 1982, when—following a recession—one of the longest bull markets in U.S. market history began. This fueled interest in long-term investing, and low fees became a key advantage of index funds. In 1986, the assets of the Vanguard 500 Index Fund exceeded $500 million. A year later, Vanguard launched a fund focused on small- and mid-cap stocks: together with the S&P 500 fund, it allowed investors to cover nearly the entire U.S. market. By the end of 1987, these two funds held approximately $1 billion.

In 2017, Bogle said: “Over the past five years, approximately $400 billion has flowed out of actively managed funds, and $600 billion has flowed into index funds. That’s a shift of one trillion dollars in the equity segment alone. A massive shift in just five short years! So the market is reacting.”

When Bogle stepped down as CEO of Vanguard in 1996, the company managed $236 billion in assets and offered investors 82 funds (by 2026, assets in funds based on the Vanguard 500 Index Fund had reached $1.5 trillion). The average expense ratio was 0.29%. Its scale allowed Vanguard to reduce costs even further, and the low fees, in turn, attracted new clients.

In essence, Bogle introduced passive investing to retail investors: rather than picking individual stocks or actively trading, investors should simply track the market with minimal intervention in their portfolios. John Bogle urged investors not to react to short-term market fluctuations and not to try to time the market: “The formula for successful investing is simple: buy the entire stock market through an index fund, and then do nothing.”.

However, he did not accept all of the products that emerged from the passive investing industry he had created. Bogle criticized complex index strategies and the concentration of huge blocks of shares. He believed that instruments designed for simple and low-cost long-term investing should not become yet another means of speculation. “Index funds eliminate the risks associated with individual securities, sectors, and human error. The only risk that remains is the stock market itself.”

Warren Buffett also supported Bogle’s idea (something Bogle himself spoke of with great pride). At the 1993 Berkshire Hathaway shareholders’ meeting, Buffett said that index funds, on average, had outperformed professional Wall Street managers for investors. In a 2013 letter to shareholders, Buffett attributed the advantage of index funds to their low fees. He instructed that, after his death, 10% of his assets be invested in short-term government bonds and 90% in a low-cost S&P 500 index fund: “I recommend a fund from Vanguard. I am convinced that the trust’s long-term results under this strategy will outperform those of most investors—whether pension funds, institutional investors, or individuals—who use managers with high fees.”

According to the fund's calculations, $10,000 invested in Vanguard at the end of 1976 would have grown to approximately $2 million by March 2026.

This article was AI-translated and verified by a human editor