28 institutions reported holding $574,094 of ALPHA COMPUTE CORP (PRTG) in SEC 13F filings for 2026-06-30. Largest institutional holders: JANE STREET GROUP, LLC ($313,110), Cambridge Investment Research Advisors, Inc. ($94,000), Shay Capital LLC ($91,196), Virtu Financial LLC ($20,000), One68 Global Capital, LLC ($19,558). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | JANE STREET GROUP, LLC | $313,110 | 1.2M | Added |
| 2 | Cambridge Investment Research Advisors, Inc. | $94,000 | 370,807 | New |
| 3 | Shay Capital LLC | $91,196 | 359,038 | Trimmed |
| 4 | Virtu Financial LLC | $20,000 | 77,036 | New |
| 5 | One68 Global Capital, LLC | $19,558 | 77,000 | Trimmed |
| 6 | CITADEL ADVISORS LLC | $14,016 | 55,182 | New |
| 7 | UBS Group AG | $7,983 | 31,432 | Added |
| 8 | QTR Family Wealth, LLC | $4,895 | 19,272 | Hold |
| 9 | NORDEN GROUP LLC | $3,177 | 12,506 | Hold |
| 10 | StoneX Group Inc. | $3,015 | 12,451 | New |
| 11 | SBI Securities Co., Ltd. | $1,693 | 6,667 | New |
| 12 | MERCER GLOBAL ADVISORS INC /ADV | $1,343 | 5,288 | New |
| 13 | BlackRock, Inc. | $103 | 408 | Hold |
| 14 | BNP PARIBAS FINANCIAL MARKETS | $2 | 7 | Trimmed |
| 15 | Princeton Global Asset Management LLC | $2 | 8 | Hold |
| 16 | OSAIC HOLDINGS, INC. | $1 | 5 | Hold |
| 17 | Warberg Asset Management LLC | $0 | 0 | Exited |
| 18 | XTX Topco Ltd | $0 | 0 | Exited |
| 19 | SABBY MANAGEMENT, LLC | $0 | 0 | Exited |
| 20 | TWO SIGMA SECURITIES, LLC | $0 | 0 | Exited |
| 21 | Federation des caisses Desjardins du Quebec | $0 | 1 | Hold |
| 22 | Royal Bank of Canada | $0 | 75 | Hold |
| 23 | JONES FINANCIAL COMPANIES LLLP | $0 | 0 | Exited |
| 24 | CITIGROUP INC | $0 | 0 | Exited |
| 25 | MORGAN STANLEY | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30