| BlackRock, Inc. | 2,990,446 | $26.0m | 0.0% |
| D. E. Shaw & Co., Inc. | 1,890,019 | $16.5m | 0.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,664,565 | $14.5m | 0.0% |
| AVENIR CORP | 1,468,660 | $12.8m | 1.6% |
| Baird Financial Group, Inc. | 1,340,888 | $11.7m | 0.0% |
| UBS Group AG | 1,328,824 | $11.6m | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 990,370 | $8.6m | 0.0% |
| JANE STREET GROUP, LLC | 809,991 | $7.1m | 0.0% |
| Quantum Private Wealth, LLC | 743,895 | $6.5m | 1.7% |
| STATE STREET CORP | 717,862 | $6.3m | 0.0% |
| TWO SIGMA INVESTMENTS, LP | 667,667 | $5.8m | 0.0% |
| HOLLENCREST CAPITAL MANAGEMENT | 573,266 | $5.0m | 0.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 554,452 | $4.8m | 0.0% |
| NORTHERN TRUST CORP | 370,601 | $3.2m | 0.0% |
| Connor, Clark & Lunn Investment Management Ltd. | 352,205 | $3.1m | 0.0% |
| Defender Capital, LLC. | 295,450 | $2.6m | 0.8% |
| VANGUARD FIDUCIARY TRUST CO | 274,960 | $2.4m | 0.0% |
| MORGAN STANLEY | 274,394 | $2.4m | 0.0% |
| MARSHALL WACE, LLP | 266,796 | $2.3m | 0.0% |
| Pathstone Holdings, LLC | 250,905 | $2.2m | 0.0% |
| Trexquant Investment LP | 225,139 | $2.0m | 0.0% |
| CITADEL ADVISORS LLC | 221,842 | $1.9m | 0.0% |
| GOLDMAN SACHS GROUP INC | 178,193 | $1.6m | 0.0% |
| Sargent Investment Group, LLC | 175,900 | $1.5m | 0.2% |
| MILLENNIUM MANAGEMENT LLC | 156,629 | $1.4m | 0.0% |