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, Q1 2026
Institutional positions in Nephros Inc as of Mar 31, 2026. 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
- 27
- −7 vs. Q4 2025
- Shares held
- 5.37M
- +301.6K (+6.0%) vs. Q4 2025
- Total value
- $16.0M
- −$8.73M (−35.3%) vs. Q4 2025
- New holders
- 3
- 6 more added
- Sold out
- 10
- 9 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Nephros Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Jones Financial Companies LLLP | 31 | $90 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 50 | $149 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 175 | $521 | 0.00% | −1,450−89.2% | Reduced |
| Royal Bank of Canada | 747 | $2.00K | 0.00% | +9+1.2% | Added |
| Northern Trust Corp | 10,828 | $32.3K | 0.00% | 00.0% | Unchanged |
| Spears Abacus Advisors LLC | 11,000 | $32.8K | 0.00% | 00.0% | Unchanged |
| Elkhorn Partners Limited Partnership | 12,000 | $35.8K | 0.02% | +5,000+71.4% | Added |
| Prelude Capital Management, LLC | 13,680 | $40.8K | 0.00% | −1,500−9.9% | Reduced |
| Goldman Sachs Group Inc | 14,163 | $42.2K | 0.00% | −4,817−25.4% | Reduced |
| State Street Corp | 15,698 | $46.8K | 0.00% | 00.0% | Unchanged |
| Navellier & Associates Inc | 19,126 | $57.0K | 0.01% | −8,049−29.6% | Reduced |
| Dimensional Fund Advisors LP | 20,745 | $61.8K | 0.00% | +7,144+52.5% | Added |
| Citadel Advisors LLC | 20,888 | $62.2K | 0.00% | +178+0.9% | Added |
| De Lisle Partners LLP | 25,000 | $74.5K | 0.01% | 00.0% | Unchanged |
| Blair William & Co | 36,249 | $108.0K | 0.00% | 00.0% | Unchanged |
| Vanguard Fiduciary Trust Co | 36,901 | $110.0K | 0.00% | +36,901 | New |
| Essex Investment Management Co LLC | 38,984 | $116.2K | 0.02% | 00.0% | Unchanged |
| HighTower Advisors, LLC | 59,710 | $177.9K | 0.00% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 72,925 | $217.4K | 0.00% | −1,703−2.3% | Reduced |
| Renaissance Technologies LLC | 99,400 | $296.2K | 0.00% | −4,372−4.2% | Reduced |
| Morgan Stanley | 110,915 | $330.5K | 0.00% | +92,956+517.6% | Added |
| Mesirow Financial Investment Management, Inc. | 120,000 | $357.6K | 0.01% | +70,000+140.0% | Added |
| Bard Associates Inc | 121,202 | $361.2K | 0.09% | −417−0.3% | Reduced |
| Cornerstone Capital, Inc. | 128,700 | $383.5K | 0.04% | +128,700 | New |
| Vanguard Capital Management LLC | 198,643 | $592.0K | 0.00% | +198,643 | New |
| Topline Capital Management, LLC | 581,967 | $1.73M | 0.29% | −32,335−5.3% | Reduced |
| Wexford Capital LP | 3,600,552 | $10.7M | 1.77% | −16,481−0.5% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −69,149−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −23,004−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −21,983−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −21,617−100.0% | Sold out |
| Heron Bay Capital Management | 0 | $0 | 0.00% | −13,471−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −10,835−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −6,015−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −590−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −73−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −27−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |