John Bogle and the Vanguard Experiment

Slater, a journalist who wrote several business biographies, produced this account of John Bogle and Vanguard in 1996, when the firm was large but not yet dominant and when index funds were still a minority of assets.

The narrative covers Bogle's Princeton thesis on the mutual fund industry, his career at Wellington Management, the merger with a Boston firm that ended with Bogle being fired in 1974, and the creation of Vanguard from that defeat. Slater documents the structural device: Bogle persuaded the fund directors to have the funds themselves acquire the administrative operations, which made the funds their own owner and removed the external management company's profit. He then covers the 1976 launch of the First Index Investment Trust, the industry's derision, the slow accumulation of assets, the addition of bond and money market funds, and the growth through the 1980s and early 1990s.

The argument is Bogle's own, which Slater reports rather than tests: that costs are the only reliable predictor of relative fund performance, that the average active manager must underperform the market by the amount of fees and trading costs, and that the industry's structure prevents it from acting on this.

The book is now dated in the way that matters most. It was written before indexing became the dominant form of equity ownership, before exchange-traded funds, before the fee compression of the 2000s and 2010s, and before Vanguard's assets grew by more than an order of magnitude. Balchunas's The Bogle Effect and Ellis's Inside Vanguard, both in this reference, cover the full arc. Slater's account is useful mainly as a record of how the firm and the argument looked when the outcome was still uncertain.