23 institutions reported holding $1.0M of ALPHATON CAPITAL CORP (PRTG) in SEC 13F filings for 2026-03-31. Largest institutional holders: SABBY MANAGEMENT, LLC ($654,785), Shay Capital LLC ($193,487), FNY Investment Advisers, LLC ($56,000), One68 Global Capital, LLC ($35,392), PRELUDE CAPITAL MANAGEMENT, LLC ($26,860). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SABBY MANAGEMENT, LLC | $654,785 | 2.1M | New |
| 2 | Shay Capital LLC | $193,487 | 612,300 | New |
| 3 | FNY Investment Advisers, LLC | $56,000 | 178,711 | New |
| 4 | One68 Global Capital, LLC | $35,392 | 112,000 | New |
| 5 | PRELUDE CAPITAL MANAGEMENT, LLC | $26,860 | 85,000 | New |
| 6 | Warberg Asset Management LLC | $13,554 | 42,133 | New |
| 7 | XTX Topco Ltd | $7,344 | 23,241 | New |
| 8 | TWO SIGMA SECURITIES, LLC | $6,723 | 21,275 | New |
| 9 | QTR Family Wealth, LLC | $6,360 | 19,272 | Hold |
| 10 | NORDEN GROUP LLC | $3,952 | 12,506 | New |
| 11 | JANE STREET GROUP, LLC | $3,596 | 11,381 | Added |
| 12 | UBS Group AG | $1,752 | 5,544 | Added |
| 13 | BlackRock, Inc. | $129 | 408 | Hold |
| 14 | JONES FINANCIAL COMPANIES LLLP | $89 | 300 | Hold |
| 15 | MORGAN STANLEY | $32 | 100 | Hold |
| 16 | NATIONAL BANK OF CANADA /FI/ | $24 | 73 | Hold |
| 17 | BNP PARIBAS FINANCIAL MARKETS | $3 | 9 | Hold |
| 18 | Princeton Global Asset Management LLC | $3 | 8 | Hold |
| 19 | OSAIC HOLDINGS, INC. | $1 | 5 | Trimmed |
| 20 | CITIGROUP INC | $0 | 1 | New |
| 21 | Royal Bank of Canada | $0 | 75 | Hold |
| 22 | SBI Securities Co., Ltd. | $0 | 0 | Exited |
| 23 | Federation des caisses Desjardins du Quebec | $0 | 1 | Hold |
Source: SEC Form 13F filings · as of 2026-03-31