NephrosNEPH
13F holders, Q2 2025 (June 30)At the end of Q2 2025, 21 institutions reported holding Nephros Inc. (NEPH) in their 13F filings, up 3 from Q1 2025. 4 opened new positions and 1 sold out. The largest holders were Wexford Capital LP ($14.8M), Topline Capital Management, LLC ($2.0M) and Vanguard Group Inc. ($1.3M). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Nephros Inc.
- CUSIP
- 640671400
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $157K |
| Exits | 1 | $22 |
All 13F filers, Q1 2025 → Q2 2025: 229,508 shares bought and 41,872 shares sold, net +187,636 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 21 holders
| Wexford Capital LP | 4.12% | Add +0.2% | 3,608,081 | $14.8M |
| Topline Capital Management, LLC | 0.33% | Add +13.1% | 477,449 | $2.0M |
| Vanguard Group Inc. | 0.00% | Add +58.4% | 323,443 | $1.3M |
| Bard Associates Inc. | 0.17% | Reduce -8.4% | 131,121 | $536K |
| Geode Capital Management, LLC | 0.00% | Add +3.2% | 93,187 | $381K |
| HighTower Advisors, LLC | 0.00% | Add +0.3% | 55,876 | $229K |
| Blair William & Co. | 0.00% | No change | 36,249 | $148K |
| Susquehanna International Group, LLP | 0.00% | Add +24.6% | 29,425 | $120K |
| Essex Investment Management Co. LLC | 0.02% | New | 24,822 | $102K |
| State Street Corp. | 0.00% | No change | 15,698 | $64K |
| Elkhorn Partners Limited Partnership | 0.04% | Reduce -62.8% | 14,500 | $59K |
| Mesirow Financial Investment Management, Inc. | 0.00% | No change | 13,800 | $56K |
| Citadel Advisors | 0.00% | Reduce -1.1% | 11,890 | $49K |
| Renaissance Technologies | 0.00% | New | 10,900 | $45K |
| UBS Group AG | 0.00% | New | 2,523 | $10K |
| Morgan Stanley | 0.00% | Reduce -64.7% | 1,915 | $8K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -60.5% | 1,105 | $5K |
| Osaic Holdings, Inc. | 0.00% | New | 175 | $715 |
| Bank of America Corp. | 0.00% | Add +54.4% | 122 | $499 |
| Jones Financial Companies LLLP | 0.00% | No change | 31 | $120 |
| Royal Bank of Canada | 0.00% | No change | 2 | $0 |
"% of holder's portfolio" is NEPH's weight in each manager's 13F, not the share of Nephros Inc. the manager owns.