| 1 | AWM Investment Company, Inc. | 5,649,544 | $12.1M | 1.17% | Share |
| 2 | INTEGRITY WEALTH ADVISORS, INC. | 5,452,499 | $11.7M | 7.99% | Share |
| 3 | VANGUARD GROUP INC | 1,809,142 | $3.9M | 0.00% | Share |
| 4 | Manatuck Hill Partners, LLC | 1,343,225 | $2.9M | 1.01% | Share |
| 5 | Pacific Ridge Capital Partners, LLC | 1,327,187 | $2.8M | 0.62% | Share |
| 6 | FNY Investment Advisers, LLC | 1,034,245 | $2.2M | 0.63% | Share |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 980,704 | $2.0M | 0.00% | Share |
| 8 | HERALD INVESTMENT MANAGEMENT Ltd | 700,000 | $1.5M | 0.20% | Share |
| 9 | Fi3 FINANCIAL ADVISORS, LLC | 480,692 | $1.0M | 0.32% | Share |
| 10 | Sequoia Financial Advisors, LLC | 477,883 | $1.0M | 0.01% | Share |
| 11 | BlackRock, Inc. | 547,349 | $1.0M | 0.00% | Share |
| 12 | Evernest Financial Advisors, LLC | 313,267 | $642K | 0.13% | Share |
| 13 | VANGUARD GROUP INC | 273,355 | $586K | 0.00% | Share |
| 14 | BOKF, NA | 183,100 | $392K | 0.01% | Share |
| 15 | ESSEX INVESTMENT MANAGEMENT CO LLC | 72,907 | $156K | 0.02% | Share |
| 16 | Peterson Wealth Advisors, LLC | 71,224 | $152K | 0.02% | Share |
| 17 | GROUP ONE TRADING LLC | 67,000 | $143K | 0.00% | Call |
| 18 | UBS Group AG | 63,992 | $137K | 0.00% | Share |
| 19 | CAPITAL ADVISORS INC/OK | 43,690 | $93K | 0.00% | Share |
| 20 | VANGUARD GROUP INC | 21,244 | $45K | 0.00% | Share |
| 21 | Legato Capital Management LLC | 17,172 | $36K | 0.00% | Share |
| 22 | Centiva Capital, LP | 10,782 | $23K | 0.00% | Share |
| 23 | Jaffetilchin Investment Partners, LLC | 10,150 | $21K | 0.00% | Share |
| 24 | MTM Investment Management, LLC | 7,737 | $16K | 0.01% | Share |
| 25 | UBS Group AG | 3,263 | $6K | 0.00% | Share |
| 26 | Garton & Associates Financial Advisors LLC | 650 | $1K | 0.00% | Share |
| 27 | WFA of San Diego, LLC | 500 | $1K | 0.00% | Share |
| 28 | WFA of San Diego, LLC | 500 | $1K | 0.00% | Share |
| 29 | CITADEL ADVISORS LLC | 210,676 | $0 | 0.00% | Share |
| 30 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 41,241 | $0 | 0.00% | Share |
| 31 | CAPTRUST FINANCIAL ADVISORS | 20,000 | $0 | 0.00% | Share |
| 32 | Creative Planning | 21,794 | $0 | 0.00% | Share |
| 33 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 182,000 | $0 | 0.00% | Call |
| 34 | WELLS FARGO & COMPANY/MN | 1,002 | $0 | 0.00% | Share |
| 35 | RAYMOND JAMES FINANCIAL INC | 25,919 | $0 | 0.00% | Share |
| 36 | HRT FINANCIAL LP | 36,942 | $0 | 0.00% | Share |
| 37 | Cetera Investment Advisers | 11,500 | $0 | 0.00% | Share |
| 38 | SIMPLEX TRADING, LLC | 28,600 | $0 | 0.00% | Call |
| 39 | Qube Research & Technologies Ltd | 27,584 | $0 | 0.00% | Share |
| 40 | CITIGROUP INC | 1 | $0 | 0.00% | Share |
| 41 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 20,918 | $0 | 0.00% | Share |
| 42 | STATE STREET CORP | 159,169 | $0 | 0.00% | Share |
| 43 | RENAISSANCE TECHNOLOGIES LLC | 116,436 | $0 | 0.00% | Share |
| 44 | Prospera Financial Services Inc | 288,150 | $0 | 0.00% | Share |
| 45 | JANE STREET GROUP, LLC | 83,500 | $0 | 0.00% | Call |
| 46 | JANE STREET GROUP, LLC | 37,944 | $0 | 0.00% | Share |
| 47 | GOLDMAN SACHS GROUP INC | 119,815 | $0 | 0.00% | Share |
| 48 | GEODE CAPITAL MANAGEMENT, LLC | 411,784 | $0 | 0.00% | Share |
| 49 | GEODE CAPITAL MANAGEMENT, LLC | 93,212 | $0 | 0.00% | Share |
| 50 | MARSHALL WACE, LLP | 25,433 | $0 | 0.00% | Share |