I was sitting in the lobby of the Hyatt Regency in San Antonio last weekend; my flight wasn’t until later and I was basking in the glow of a successful Bogleheads conference. (Bogleheads are investors ...

This week, 200 investors met in Pennsylvania at a conference that is a cross between a religious revival and an M.B.A. finance class. The Bogleheads, as the group is known, converged to thank their ...