1 Stanford University — $19.75 billion
2 Apple — $8.97 billion
3 Google — $7.50 billion
4 Irvine Company — $5.93 billion
5 Jay Paul — $3.48 billion
6 Cisco Systems — $3.35 billion
7 Essex Property — $3.09 billion
8 Intel — $2.52 billion
9 Sobrato Organization — $2.51 billion
10 Prometheus — $2.05 billion