Their combined net worth fell to $3 billion from $3.7 billion a year earlier. The Po family ranked 15th with $1.6 billion, followed by Soledad Oppen-Cojuangco and her family with $1.1 billion. Mariano Tan, Jr. ranked 31st with $425 million, followed by the Yuchengco family with $405 million and the Yap family with $400 million. Alfredo M. Yao ranked 36th with $360 million, followed by Wilcon Depot, Inc. founder William T. Belo with $355 million. The net worth estimates were based on stock prices and exchange rates as of the close of markets on July 17.