Prophase Labs Inc.
13F holders, Q3 2025 (September 30)29holders −4
6new positions
10sold out
1famous investor
$0.46avg. 13F price*
At the end of Q3 2025, 29 institutions reported holding Prophase Labs Inc. in their 13F filings, down 4 from Q2 2025. 6 opened new positions and 10 sold out. The largest holders were Sykon Capital LLC ($295K), Vanguard Group Inc. ($244K) and Susquehanna International Group, LLP ($182K). One famous investor held it Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Prophase Labs Inc.
- CUSIP
- 74345W108
- Latest filing quarter
- Q3 2025
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 6 | $216K |
| Exits | 10 | $161K |
All 13F filers, Q2 2025 → Q3 2025: 982,188 shares bought and 679,581 shares sold, net +302,607 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 29 holders
| Sykon Capital LLC | 0.10% | No change | 644,795 | $295K |
| Vanguard Group Inc. | 0.00% | Add +30.3% | 531,919 | $244K |
| Susquehanna International Group, LLP | 0.00% | Add +290.1% | 397,914 | $182K |
| Geode Capital Management, LLC | 0.00% | Add +16.9% | 302,929 | $139K |
| Accretive Wealth Partners, LLC | 0.03% | New | 250,000 | $114K |
| HighTower Advisors, LLC | 0.00% | Add +3.4% | 237,338 | $109K |
| Apollon Wealth Management, LLC | 0.00% | New | 182,464 | $84K |
| Chapin Davis, Inc. | 0.01% | No change | 80,000 | $37K |
| Two Sigma Securities, LLC | 0.00% | Add +25.5% | 47,472 | $22K |
| State Street Corp. | 0.00% | No change | 44,663 | $20K |
| Simplex Trading, LLC | 0.00% | Add +249.6% | 40,598 | $18K |
| Bank of New York Mellon Corp | 0.00% | No change | 37,052 | $17K |
| XTX Topco Ltd | 0.00% | Reduce -71.9% | 28,768 | $13K |
| BlackRock, Inc. | 0.00% | No change | 28,026 | $13K |
| Northern Trust Corp. | 0.00% | No change | 23,214 | $11K |
| UBS Group AG | 0.00% | Reduce -65.8% | 19,740 | $9K |
| Forvis Mazars Wealth Advisors, LLC | 0.00% | No change | 19,598 | $9K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | New | 14,795 | $7K |
| Annex Advisory Services, LLC | 0.00% | New | 15,000 | $7K |
| Renaissance Technologies | 0.00% | Reduce -92.7% | 10,100 | $5K |
| Nordwand Advisors, LLC | 0.00% | New | 10,000 | $5K |
| Morgan Stanley | 0.00% | No change | 9,167 | $4K |
| JPMorgan Chase & Co. | 0.00% | No change | 1,765 | $808 |
| Wells Fargo & Company | 0.00% | No change | 1,530 | $700 |
| Bank of America Corp. | 0.00% | Reduce -95.9% | 1,118 | $511 |
| SBI Securities Co., Ltd. | 0.00% | No change | 504 | $231 |
| CoreCap Advisors, LLC | 0.00% | Reduce -97.1% | 100 | $46 |
| Farther Finance Advisors, LLC | 0.00% | No change | 97 | $44 |
| Key Financial Inc | 0.00% | New | 1 | $1 |
"% of holder's portfolio" is PROPHASE LABS INC's weight in each manager's 13F, not the share of Prophase Labs Inc. the manager owns.