| Quarter | Name | Total no. shares held | Percent Holding | Pledged | Locked | ||
|---|---|---|---|---|---|---|---|
| shares | % | shares | % | ||||
| Mar 2017 | College Retirement Equities Fund- Stock Account | 14,391,253 | 3.13% | 0 | 0.00% | 0 | 0.00% |
| Dec 2016 | College Retirement Equities Fund-Stock Account | 15,854,409 | 3.45% | 0 | 0.00% | 0 | 0.00% |
| Sep 2016 | College Retirement Equities Fund-Stock Account | 16,154,409 | 3.52% | 0 | 0.00% | 0 | 0.00% |
| Jun 2016 | College Retirement Equities Fund-Stock Account | 8,817,993 | 1.93% | 0 | 0.00% | 0 | 0.00% |