| BlackRock, Inc. | 3,464,774 | $65.7m | 0.0% |
| T. Rowe Price Investment Management, Inc. | 2,377,854 | $45.1m | 0.0% |
| AMERIPRISE FINANCIAL INC | 1,870,511 | $35.5m | 0.0% |
| AIGH Capital Management LLC | 1,678,409 | $31.8m | 2.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,505,404 | $28.6m | 0.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1,432,391 | $27.2m | 0.0% |
| FEDERATED HERMES, INC. | 1,353,621 | $25.7m | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 1,328,497 | $25.2m | 0.0% |
| AQR CAPITAL MANAGEMENT LLC | 1,266,388 | $24.0m | 0.0% |
| AMERICAN CENTURY COMPANIES INC | 1,251,002 | $23.7m | 0.0% |
| ACADIAN ASSET MANAGEMENT LLC | 1,058,183 | $20.1m | 0.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 974,384 | $18.5m | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 908,696 | $17.2m | 0.0% |
| ACK Asset Management LLC | 877,500 | $16.6m | 1.9% |
| IES Holdings, Inc. | 865,768 | $16.4m | 5.3% |
| Driehaus Capital Management LLC | 852,786 | $16.2m | 0.1% |
| STATE STREET CORP | 717,280 | $13.6m | 0.0% |
| TOWLE & CO | 645,605 | $12.2m | 4.1% |
| TWO SIGMA INVESTMENTS, LP | 629,659 | $11.9m | 0.0% |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 627,323 | $11.9m | 0.0% |
| Empowered Funds, LLC | 626,350 | $11.9m | 0.1% |
| CONGRUENCE CAPITAL, LLC | 441,582 | $8.4m | 2.2% |
| D. E. Shaw & Co., Inc. | 425,066 | $8.1m | 0.0% |
| NORTHERN TRUST CORP | 321,691 | $6.1m | 0.0% |
| Bank of New York Mellon Corp | 275,836 | $5.2m | 0.0% |