Nephros Inc
NEPH- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001196298
No open-market purchases or sales by Nephros Inc insiders were filed in the last 90 days; 33 institutions reported holding it in 13F filings for Q2 2026, worth $19.0M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Nephros Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 35
- +11 vs. Q3 2025
- Shares held
- 5.30M
- +287.2K (+5.7%) vs. Q3 2025
- Total value
- $25.9M
- +$2.15M (+9.1%) vs. Q3 2025
- New holders
- 14
- 11 more added
- Sold out
- 3
- 5 more reduced
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting NEPH on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 33 | $19.0M |
| Q1 2026 | 27 | $16.0M |
| Q4 2025 | 35 | $25.9M |
| Q3 2025 | 24 | $23.7M |
| Q2 2025 | 21 | $19.8M |
| Q1 2025 | 18 | $8.02M |
| Q4 2024 | 18 | $6.91M |
| Q3 2024 | 17 | $7.33M |
| Q2 2024 | 19 | $9.18M |
| Q1 2024 | 18 | $9.40M |
| Q4 2023 | 18 | $15.0M |
| Q3 2023 | 14 | $6.35M |
| Q2 2023 | 16 | $6.63M |
| Q1 2023 | 18 | $4.57M |
| Q4 2022 | 19 | $4.94M |
| Q3 2022 | 18 | $3.95M |
| Q2 2022 | 17 | $968.0K |
| Q1 2022 | 16 | $2.83M |
| Q4 2021 | 17 | $9.15M |
| Q3 2021 | 17 | $14.9M |
| Q2 2021 | 19 | $60.1M |
| Q1 2021 | 21 | $34.8M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Nephros Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wexford Capital LP | 3,617,033 | $17.7M | 4.54% | 00.0% | Unchanged |
| Topline Capital Management, LLC | 614,302 | $3.00M | 0.27% | +18,002+3.0% | Added |
| Vanguard Group Inc | 233,644 | $1.14M | 0.00% | −47,662−16.9% | Reduced |
| Bard Associates Inc | 121,619 | $593.5K | 0.15% | −5,502−4.3% | Reduced |
| Renaissance Technologies LLC | 103,772 | $506.4K | 0.00% | +21,272+25.8% | Added |
| Geode Capital Management, LLC | 74,628 | $364.3K | 0.00% | −1,263−1.7% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 69,149 | $337.0K | 0.00% | +69,149 | New |
| HighTower Advisors, LLC | 59,710 | $291.4K | 0.00% | +4,000+7.2% | Added |
| Mesirow Financial Investment Management, Inc. | 50,000 | $244.0K | 0.01% | +36,200+262.3% | Added |
| Essex Investment Management Co LLC | 38,984 | $190.2K | 0.03% | +14,162+57.1% | Added |
| Blair William & Co | 36,249 | $176.9K | 0.00% | 00.0% | Unchanged |
| Navellier & Associates Inc | 27,175 | $132.6K | 0.01% | +27,175 | New |
| De Lisle Partners LLP | 25,000 | $122.0K | 0.02% | +25,000 | New |
| Quadrature Capital Ltd | 23,004 | $112.3K | 0.00% | +23,004 | New |
| Marshall Wace, LLP | 21,983 | $107.3K | 0.00% | +21,983 | New |
| XTX Topco Ltd | 21,617 | $105.5K | 0.00% | +7,062+48.5% | Added |
| Citadel Advisors LLC | 20,710 | $101.1K | 0.00% | +4,165+25.2% | Added |
| Goldman Sachs Group Inc | 18,980 | $92.6K | 0.00% | +337+1.8% | Added |
| Morgan Stanley | 17,959 | $87.6K | 0.00% | +16,044+837.8% | Added |
| State Street Corp | 15,698 | $76.6K | 0.00% | 00.0% | Unchanged |
| Prelude Capital Management, LLC | 15,180 | $74.1K | 0.01% | +15,180 | New |
| Dimensional Fund Advisors LP | 13,601 | $66.4K | 0.00% | 00.0% | Unchanged |
| Heron Bay Capital Management | 13,471 | $65.7K | 0.01% | +13,471 | New |
| Spears Abacus Advisors LLC | 11,000 | $53.7K | 0.00% | +11,000 | New |
| Centiva Capital, LP | 10,835 | $52.9K | 0.00% | +10,835 | New |
| Northern Trust Corp | 10,828 | $52.8K | 0.00% | +10,828 | New |
| Elkhorn Partners Limited Partnership | 7,000 | $34.2K | 0.02% | −5,500−44.0% | Reduced |
| Kestra Advisory Services, LLC | 6,015 | $29.4K | 0.00% | +6,015 | New |
| Advisor Group Holdings, Inc. | 1,625 | $7.93K | 0.00% | +1,450+828.6% | Added |
| Royal Bank of Canada | 738 | $4.00K | 0.00% | +736+36,800.0% | Added |
| SageView Advisory Group, LLC | 590 | $2.88K | 0.00% | +590 | New |
| Bank of America Corp | 73 | $356 | 0.00% | −19−20.7% | Reduced |
| Harbour Investments, Inc. | 50 | $244 | 0.00% | +50 | New |
| Jones Financial Companies LLLP | 31 | $151 | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 27 | $132 | 0.00% | +27 | New |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −10,373−100.0% | Sold out |
| Barclays PLC | 0 | $0 | 0.00% | −106−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −66−100.0% | Sold out |