15 institutions reported holding $605,832 of AMPLITECH GROUP INC (AMPGW) in SEC 13F filings for 2026-03-31. Largest institutional holders: Cable Car Capital, LP ($209,000), HEIGHTS CAPITAL MANAGEMENT, INC ($161,130), SIMPLEX TRADING, LLC ($104,689), GROUP ONE TRADING LLC ($81,130), Warberg Asset Management LLC ($38,747). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Cable Car Capital, LP | $209,000 | 1.9M | New |
| 2 | HEIGHTS CAPITAL MANAGEMENT, INC | $161,130 | 2.5M | New |
| 3 | SIMPLEX TRADING, LLC | $104,689 | 55,100 | Added |
| 4 | GROUP ONE TRADING LLC | $81,130 | 42,700 | Added |
| 5 | Warberg Asset Management LLC | $38,747 | 366,784 | New |
| 6 | EQUITEC PROPRIETARY MARKETS, LLC | $10,916 | 99,867 | Added |
| 7 | WELLS FARGO & COMPANY/MN | $220 | 2,000 | New |
| 8 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
| 9 | BOOTHBAY FUND MANAGEMENT, LLC | $0 | 0 | Exited |
| 10 | Clear Street Group Inc. | $0 | 0 | Exited |
| 11 | Creek Drive Management Group LLC | $0 | 0 | Exited |
| 12 | THOMPSON DAVIS & CO., INC. | $0 | 0 | Exited |
| 13 | BARD ASSOCIATES INC | $0 | 0 | Exited |
| 14 | UBS Group AG | $0 | 0 | Exited |
| 15 | Murchinson Ltd. | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31