36 institutions reported holding $16.0M of Nephros, Inc. (NEPH) in SEC 13F filings for 2026-03-31. Largest institutional holders: WEXFORD CAPITAL LP ($10.7M), Topline Capital Management, LLC ($1.7M), VANGUARD CAPITAL MANAGEMENT LLC ($591,956), Cornerstone Capital, Inc. ($383,526), BARD ASSOCIATES INC ($361,182). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | WEXFORD CAPITAL LP | $10.7M | 3.6M | Trimmed |
| 2 | Topline Capital Management, LLC | $1.7M | 581,967 | Trimmed |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $591,956 | 198,643 | New |
| 4 | Cornerstone Capital, Inc. | $383,526 | 128,700 | New |
| 5 | BARD ASSOCIATES INC | $361,182 | 121,202 | Trimmed |
| 6 | Mesirow Financial Investment Management, Inc. | $357,600 | 120,000 | Added |
| 7 | MORGAN STANLEY | $330,527 | 110,915 | Added |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $296,212 | 99,400 | Trimmed |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $217,376 | 72,925 | Trimmed |
| 10 | HighTower Advisors, LLC | $177,936 | 59,710 | Hold |
| 11 | ESSEX INVESTMENT MANAGEMENT CO LLC | $116,172 | 38,984 | Hold |
| 12 | VANGUARD FIDUCIARY TRUST CO | $109,965 | 36,901 | New |
| 13 | BLAIR WILLIAM & CO/IL | $108,022 | 36,249 | Hold |
| 14 | De Lisle Partners LLP | $74,500 | 25,000 | Hold |
| 15 | CITADEL ADVISORS LLC | $62,246 | 20,888 | Added |
| 16 | DIMENSIONAL FUND ADVISORS LP | $61,820 | 20,745 | Added |
| 17 | NAVELLIER & ASSOCIATES INC | $56,995 | 19,126 | Trimmed |
| 18 | STATE STREET CORP | $46,780 | 15,698 | Hold |
| 19 | GOLDMAN SACHS GROUP INC | $42,206 | 14,163 | Trimmed |
| 20 | PRELUDE CAPITAL MANAGEMENT, LLC | $40,766 | 13,680 | Trimmed |
| 21 | ELKHORN PARTNERS LIMITED PARTNERSHIP | $35,760 | 12,000 | Added |
| 22 | Cannell & Spears LLC | $32,780 | 11,000 | Hold |
| 23 | NORTHERN TRUST CORP | $32,267 | 10,828 | Hold |
| 24 | Royal Bank of Canada | $2,000 | 747 | Added |
| 25 | OSAIC HOLDINGS, INC. | $521 | 175 | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31