ExxonMobil is the largest holding the state of Michigan's Retirement Systems has in its stock portfolio. It has 12.8 million shares with, as of yesterday, a market value of about $816 million.
Thirteen other gas and oil companies as well as nine energy service and equipment companies are part of the portfolio too. The state's Retirement Systems represents more than 500,000 current employees and retirees. They're state employees, state police, state judges and public school employees.