NEPHROS INC - NEPH
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| WEXFORD CAPITAL LP | History | Reduced | 3,600,552 | 10,729 | 1.55% | 3.4% | 1 | -16,481 | -0.46% | Q1 2026 | May 15, 2026 |
| Topline Capital Management, LLC | History | Reduced | 581,967 | 1,734 | 0.29% | 0.27% | 2 | -32,335 | -5.26% | Q1 2026 | May 15, 2026 |
| VANGUARD GROUP INC | History | No change | 233,644 | 1,140 | 0.0% | 0.0% | 3 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 198,643 | 591 | 0.0% | — | 4 | +198,643 | New | Q1 2026 | May 15, 2026 |
| Cornerstone Capital, Inc. | History | New | 128,700 | 383 | 0.04% | — | 5 | +128,700 | New | Q1 2026 | May 12, 2026 |
| BARD ASSOCIATES INC | History | Reduced | 121,202 | 361 | 0.09% | 0.15% | 6 | -417 | -0.34% | Q1 2026 | May 07, 2026 |
| Mesirow Financial Investment Management, Inc. | History | Added to | 120,000 | 357 | 0.01% | 0.01% | 7 | +70,000 | 140.0% | Q1 2026 | Apr 21, 2026 |
| MORGAN STANLEY | History | Added to | 110,915 | 330 | 0.0% | 0.0% | 8 | +92,956 | 517.6% | Q1 2026 | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Reduced | 99,400 | 296 | 0.0% | 0.0% | 9 | -4,372 | -4.21% | Q1 2026 | May 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Reduced | 72,925 | 217 | 0.0% | 0.0% | 10 | -1,703 | -2.28% | Q1 2026 | May 15, 2026 |
| HighTower Advisors, LLC | History | No change | 59,710 | 177 | 0.0% | 0.0% | 11 | 0 | 0.0% | Q1 2026 | May 05, 2026 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | History | No change | 38,984 | 116 | 0.02% | 0.03% | 12 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 36,901 | 109 | 0.0% | — | 13 | +36,901 | New | Q1 2026 | May 08, 2026 |
| BLAIR WILLIAM & CO/IL | History | No change | 36,249 | 108 | 0.0% | 0.0% | 14 | 0 | 0.0% | Q1 2026 | May 08, 2026 |
| De Lisle Partners LLP | History | No change | 25,000 | 74 | 0.01% | 0.02% | 15 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 20,888 | 62 | 0.0% | 0.0% | 16 | +178 | 0.86% | Q1 2026 | May 15, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | Added to | 20,745 | 61 | 0.0% | 0.0% | 17 | +7,144 | 52.53% | Q1 2026 | May 07, 2026 |
| NAVELLIER & ASSOCIATES INC | History | Reduced | 19,126 | 56 | 0.01% | 0.01% | 18 | -8,049 | -29.62% | Q1 2026 | May 07, 2026 |
| STATE STREET CORP | History | No change | 15,698 | 46 | 0.0% | 0.0% | 19 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | History | Reduced | 14,163 | 42 | 0.0% | 0.0% | 20 | -4,817 | -25.38% | Q1 2026 | May 15, 2026 |
| PRELUDE CAPITAL MANAGEMENT, LLC | History | Reduced | 13,680 | 40 | 0.0% | 0.01% | 21 | -1,500 | -9.88% | Q1 2026 | May 15, 2026 |
| ELKHORN PARTNERS LIMITED PARTNERSHIP | History | Added to | 12,000 | 35 | 0.02% | 0.02% | 22 | +5,000 | 71.43% | Q1 2026 | May 14, 2026 |
| NORTHERN TRUST CORP | History | No change | 10,828 | 32 | 0.0% | 0.0% | 23 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| Cannell & Spears LLC | History | No change | 11,000 | 32 | 0.0% | 0.0% | 24 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| ROYAL BANK OF CANADA | History | Added to | 747 | 2 | 0.0% | 0.0% | 25 | +9 | 1.22% | Q1 2026 | May 15, 2026 |
| SageView Advisory Group, LLC | History | No change | 590 | 2 | 0.0% | 0.0% | 26 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Cambridge Investment Research Advisors, Inc. | History | Closed out | 0 | 0 | — | 0.0% | — | -69,149 | -100.0% | Q1 2026 | Apr 30, 2026 |
| Quadrature Capital Ltd | History | Closed out | 0 | 0 | — | 0.0% | — | -23,004 | -100.0% | Q1 2026 | May 15, 2026 |
| MARSHALL WACE, LLP | History | Closed out | 0 | 0 | — | 0.0% | — | -21,983 | -100.0% | Q1 2026 | May 14, 2026 |
| XTX Topco Ltd | History | Closed out | 0 | 0 | — | 0.0% | — | -21,617 | -100.0% | Q1 2026 | May 15, 2026 |
| Heron Bay Capital Management | History | Closed out | 0 | 0 | — | 0.01% | — | -13,471 | -100.0% | Q1 2026 | May 13, 2026 |
| Centiva Capital, LP | History | Closed out | 0 | 0 | — | 0.0% | — | -10,835 | -100.0% | Q1 2026 | May 14, 2026 |
| Kestra Advisory Services, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -6,015 | -100.0% | Q1 2026 | Apr 30, 2026 |
| OSAIC HOLDINGS, INC. | History | Reduced | 175 | 0 | — | 0.0% | — | -1,450 | -89.23% | Q1 2026 | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Closed out | 0 | 0 | — | — | — | -73 | -100.0% | Q1 2026 | May 15, 2026 |
| NewEdge Advisors, LLC | History | Closed out | 0 | 0 | — | — | — | -27 | -100.0% | Q1 2026 | May 15, 2026 |
| HARBOUR INVESTMENTS, INC. | History | No change | 50 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| JONES FINANCIAL COMPANIES LLLP | History | No change | 31 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 15, 2026 |