| FMR LLC | 1,443,577 | $38.3m | 0.0% |
| BlackRock, Inc. | 1,344,061 | $35.7m | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 648,581 | $17.2m | 0.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 647,004 | $17.2m | 0.0% |
| WEST BANCORPORATION INC | 415,411 | $11.0m | 4.7% |
| Aptus Capital Advisors, LLC | 411,047 | $10.9m | 0.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 395,349 | $10.5m | 0.0% |
| AMERICAN CENTURY COMPANIES INC | 377,827 | $10.0m | 0.0% |
| STATE STREET CORP | 344,730 | $9.1m | 0.0% |
| Legacy Bridge, LLC | 225,579 | $6.0m | 1.8% |
| MORGAN STANLEY | 181,385 | $4.8m | 0.0% |
| RENAISSANCE TECHNOLOGIES LLC | 171,752 | $4.6m | 0.0% |
| TWO SIGMA INVESTMENTS, LP | 135,265 | $3.6m | 0.0% |
| NORTHERN TRUST CORP | 128,438 | $3.4m | 0.0% |
| CITADEL ADVISORS LLC | 108,223 | $2.9m | 0.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 104,865 | $2.8m | 0.0% |
| VANGUARD FIDUCIARY TRUST CO | 102,011 | $2.7m | 0.0% |
| Bank of New York Mellon Corp | 92,501 | $2.5m | 0.0% |
| Qube Research & Technologies Ltd | 71,163 | $1.9m | 0.0% |
| GOLDMAN SACHS GROUP INC | 70,379 | $1.9m | 0.0% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 65,733 | $1.7m | 0.0% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 57,759 | $1.5m | 0.0% |
| Quantinno Capital Management LP | 51,771 | $1.4m | 0.0% |
| Trexquant Investment LP | 49,648 | $1.3m | 0.0% |
| AQR CAPITAL MANAGEMENT LLC | 45,508 | $1.2m | 0.0% |