NephrosNEPH
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 24 institutions reported holding Nephros Inc. (NEPH) in their 13F filings, up 3 from Q2 2025. 4 opened new positions and 1 sold out. The largest holders were Wexford Capital LP ($17.1M), Topline Capital Management, LLC ($2.8M) 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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $222K |
| Exits | 1 | $5K |
All 13F filers, Q2 2025 → Q3 2025: 250,963 shares bought and 88,243 shares sold, net +162,720 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 24 holders
| Wexford Capital LP | 5.15% | Add +0.3% | 3,617,033 | $17.1M |
| Topline Capital Management, LLC | 0.48% | Add +24.9% | 596,300 | $2.8M |
| Vanguard Group Inc. | 0.00% | Reduce -13.0% | 281,306 | $1.3M |
| Bard Associates Inc. | 0.16% | Reduce -3.0% | 127,121 | $601K |
| Renaissance Technologies | 0.00% | Add +656.9% | 82,500 | $390K |
| Geode Capital Management, LLC | 0.00% | Reduce -18.6% | 75,891 | $359K |
| HighTower Advisors, LLC | 0.00% | Reduce -0.3% | 55,710 | $264K |
| Blair William & Co. | 0.00% | No change | 36,249 | $171K |
| Essex Investment Management Co. LLC | 0.02% | No change | 24,822 | $117K |
| Goldman Sachs Group Inc. | 0.00% | New | 18,643 | $88K |
| Citadel Advisors | 0.00% | Add +39.1% | 16,545 | $78K |
| State Street Corp. | 0.00% | No change | 15,698 | $74K |
| XTX Topco Ltd | 0.00% | New | 14,555 | $69K |
| Mesirow Financial Investment Management, Inc. | 0.00% | No change | 13,800 | $65K |
| Dimensional Fund Advisors LP | 0.00% | New | 13,601 | $64K |
| Elkhorn Partners Limited Partnership | 0.04% | Reduce -13.8% | 12,500 | $59K |
| Susquehanna International Group, LLP | 0.00% | Reduce -64.8% | 10,373 | $49K |
| Morgan Stanley | 0.00% | No change | 1,915 | $9K |
| Osaic Holdings, Inc. | 0.00% | No change | 175 | $827 |
| Barclays PLC | 0.00% | New | 106 | $501 |
| Bank of America Corp. | 0.00% | Reduce -24.6% | 92 | $435 |
| UBS Group AG | 0.00% | Reduce -97.4% | 66 | $312 |
| Jones Financial Companies LLLP | 0.00% | No change | 31 | $138 |
| 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.