A few months ago, I learned about a biography of John Bogle that describes how he created the index-investing revolution in America by building Vanguard. I didn’t read the book then, but when I heard that he started Vanguard in 1975, I got very interested because that’s in the 1968–1982 Nixon era I’m researching. Eric Balchunas, a senior ETF analyst at Bloomberg who wrote the book, also covers the topics of how Vanguard got into the ETF business and how the mechanics of ETFs work because he was curious about them.

The Bogle Effect is part biography and part history lesson on index investing. It details Bogle founding Vanguard as a way to save his job but then realizing the power of index investing and its potential impact on investors. Fees to buy or sell stock were high in those days, and Bogle’s decision to structure Vanguard as a company owned by the investors in its funds, not Bogle, was a game changer. It led to Vanguard disrupting the Wall Street fee structure, offering the cheapest index investing funds, amassing over $10.1 trillion in assets under management as of April 2025 (source), and employing 20,000 people. I was also interested to learn that even though Vanguard is the leader in index ETFs, Bogle wasn’t a fan of them.

This book gives a great overview of Bogle’s life and personality. It’s also an interesting education on the history of index investing and how it became such a big force in today’s stock market. Anyone interested in either of these should consider giving The Bogle Effect a read.