| HORIZON KINETICS ASSET MANAGEMENT LLC | 3,219,382 | $81.5m | 0.9% |
| VALUEWORKS LLC | 669,733 | $16.9m | 3.5% |
| CWA Asset Management Group, LLC | 518,974 | $13.1m | 0.4% |
| FIRST MANHATTAN CO. LLC. | 396,373 | $10.0m | 0.0% |
| MAD RIVER INVESTORS | 323,735 | $8.2m | 3.1% |
| Advisory Services Network, LLC | 185,669 | $4.7m | 0.1% |
| Moors & Cabot, Inc. | 178,289 | $4.5m | 0.2% |
| EagleClaw Capital Managment, LLC | 170,575 | $4.3m | 0.6% |
| MORGAN STANLEY | 113,293 | $2.9m | 0.0% |
| Bank of New York Mellon Corp | 101,464 | $2.6m | 0.0% |
| SEI INVESTMENTS CO | 83,883 | $2.1m | 0.0% |
| Lido Advisors, LLC | 79,982 | $2.0m | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 59,649 | $1.5m | 0.0% |
| ROYAL BANK OF CANADA | 54,825 | $1.4m | 0.0% |
| BANK OF AMERICA CORP /DE/ | 44,658 | $1.1m | 0.0% |
| JPMORGAN CHASE & CO | 36,572 | $873,339 | 0.0% |
| PECAUT & CO. | 33,963 | $859,264 | 0.3% |
| LANARK FINANCIAL, INC. | 30,742 | $777,772 | 0.1% |
| HighTower Advisors, LLC | 25,616 | $648,077 | 0.0% |
| Steward Partners Investment Advisory, LLC | 24,638 | $623,341 | 0.0% |
| COMMONWEALTH EQUITY SERVICES, LLC | 18,071 | $457,210 | 0.0% |
| WELLS FARGO & COMPANY/MN | 17,658 | $446,746 | 0.0% |
| Russell Investments Group, Ltd. | 17,077 | $432,048 | 0.0% |
| Westmount Partners, LLC | 16,856 | $426,455 | 0.1% |
| One Charles Private Wealth Services, LLC | 16,230 | $410,619 | 0.1% |