Bogleheads:Anniversaries/January 29

January 29:
 * 1976 - Vanguard introduced the first index fund designed for US retail investors. The fund, Vanguard Index Trust, tracked the Standard & Poors 500 stock index. The fund exists today as the Vanguard 500 Index Fund.
 * 2001 - Decimal pricing of all New York Stock Exchange stocks was fully implemented, ending the practice of trading in fractions, used for more than two centuries.