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, Q3 2025
Institutional positions in Nephros Inc as of Sep 30, 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
- 24
- +3 vs. Q2 2025
- Shares held
- 5.02M
- +162.7K (+3.4%) vs. Q2 2025
- Total value
- $23.7M
- +$3.88M (+19.5%) vs. Q2 2025
- New holders
- 4
- 4 more added
- Sold out
- 1
- 8 more reduced
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Nephros Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wexford Capital LP | 3,617,033 | $17.1M | 5.15% | +8,952+0.2% | Added |
| Topline Capital Management, LLC | 596,300 | $2.82M | 0.48% | +118,851+24.9% | Added |
| Vanguard Group Inc | 281,306 | $1.33M | 0.00% | −42,137−13.0% | Reduced |
| Bard Associates Inc | 127,121 | $601.3K | 0.16% | −4,000−3.1% | Reduced |
| Renaissance Technologies LLC | 82,500 | $390.2K | 0.00% | +71,600+656.9% | Added |
| Geode Capital Management, LLC | 75,891 | $359.1K | 0.00% | −17,296−18.6% | Reduced |
| HighTower Advisors, LLC | 55,710 | $263.5K | 0.00% | −166−0.3% | Reduced |
| Blair William & Co | 36,249 | $171.5K | 0.00% | 00.0% | Unchanged |
| Essex Investment Management Co LLC | 24,822 | $117.4K | 0.02% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 18,643 | $88.2K | 0.00% | +18,643 | New |
| Citadel Advisors LLC | 16,545 | $78.3K | 0.00% | +4,655+39.2% | Added |
| State Street Corp | 15,698 | $74.3K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 14,555 | $68.8K | 0.00% | +14,555 | New |
| Mesirow Financial Investment Management, Inc. | 13,800 | $65.3K | 0.00% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 13,601 | $64.3K | 0.00% | +13,601 | New |
| Elkhorn Partners Limited Partnership | 12,500 | $59.1K | 0.04% | −2,000−13.8% | Reduced |
| Susquehanna International Group, LLP | 10,373 | $49.1K | 0.00% | −19,052−64.7% | Reduced |
| Morgan Stanley | 1,915 | $9.06K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 175 | $827 | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 106 | $501 | 0.00% | +106 | New |
| Bank of America Corp | 92 | $435 | 0.00% | −30−24.6% | Reduced |
| UBS Group AG | 66 | $312 | 0.00% | −2,457−97.4% | Reduced |
| Jones Financial Companies LLLP | 31 | $138 | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 2 | $0 | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −1,105−100.0% | Sold out |