A UC Davis study estimates that shareholders of major companies that sponsor Tiger Woods (Nike and Gatorade prominently among them) have probably lost a collective $5 to $12 billion because of the golf great’s recent marital problems. That’s a lot of dough — way more than Woods personally stands to lose from all this. Accenture, which was the first company to swiftly dump Woods as a spokesman, didn’t seem to lose any money at all. [UC Davis] Update: Felix Salmon pretty effectively pokes holes in this study.