NephrosNEPH
13F holders, Q1 2025 (March 31)18holders
1new positions
1sold out
1famous investor
$1.72avg. 13F price*
At the end of Q1 2025, 18 institutions reported holding Nephros Inc. (NEPH) in their 13F filings, unchanged from Q4 2024. 1 opened new positions and 1 sold out. The largest holders were Wexford Capital LP ($6.2M), Topline Capital Management, LLC ($726K) and Vanguard Group Inc. ($351K). One famous investor held it 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 Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $52 |
| Exits | 1 | $59K |
All 13F filers, Q4 2024 → Q1 2025: 10,038 shares bought and 57,214 shares sold, net −47,176 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 18 holders
| Wexford Capital LP | 1.61% | No change | 3,600,552 | $6.2M |
| Topline Capital Management, LLC | 0.17% | Add +0.5% | 422,089 | $726K |
| Vanguard Group Inc. | 0.00% | Add +1.1% | 204,158 | $351K |
| Bard Associates Inc. | 0.09% | Reduce -7.8% | 143,221 | $246K |
| Geode Capital Management, LLC | 0.00% | Add +6.4% | 90,289 | $155K |
| HighTower Advisors, LLC | 0.00% | No change | 55,710 | $96K |
| Elkhorn Partners Limited Partnership | 0.04% | Reduce -6.0% | 38,924 | $67K |
| Blair William & Co. | 0.00% | No change | 36,249 | $62K |
| Susquehanna International Group, LLP | 0.00% | Reduce -0.8% | 23,618 | $41K |
| State Street Corp. | 0.00% | No change | 15,698 | $27K |
| Mesirow Financial Investment Management, Inc. | 0.00% | No change | 13,800 | $24K |
| Citadel Advisors | 0.00% | Reduce -15.8% | 12,024 | $21K |
| Morgan Stanley | 0.00% | No change | 5,423 | $9K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +7.7% | 2,798 | $5K |
| Bank of America Corp. | 0.00% | Add +4.0% | 79 | $136 |
| Jones Financial Companies LLLP | 0.00% | New | 31 | $52 |
| JPMorgan Chase & Co. | 0.00% | Reduce -13.3% | 13 | $22 |
| 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.