6 institutions reported holding $5.6M of AMPLITECH GROUP INC (AMPGR) in SEC 13F filings for 2026-06-30. Largest institutional holders: Cable Car Capital, LP ($2.5M), HEIGHTS CAPITAL MANAGEMENT, INC ($2.5M), Warberg Asset Management LLC ($596,395), EQUITEC PROPRIETARY MARKETS, LLC ($2,969), WELLS FARGO & COMPANY/MN ($1,970). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Cable Car Capital, LP | $2.5M | 1.3M | Added |
| 2 | HEIGHTS CAPITAL MANAGEMENT, INC | $2.5M | 1.2M | Trimmed |
| 3 | Warberg Asset Management LLC | $596,395 | 309,044 | Added |
| 4 | EQUITEC PROPRIETARY MARKETS, LLC | $2,969 | 1,507 | Trimmed |
| 5 | WELLS FARGO & COMPANY/MN | $1,970 | 1,000 | Hold |
| 6 | Clear Street Group Inc. | $516 | 262 | New |
Source: SEC Form 13F filings · as of 2026-06-30