Who owns NEPHROS INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of NEPH from SEC Form 13F filings across 33 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 33 institutions disclosed 5.3M shares of NEPHROS INC worth $19.0M — about 48.9% of shares outstanding; the largest disclosed holder is WEXFORD CAPITAL LP. Source: SEC Form 13F filings, parsed by EvidInvest.
33
13F holders
$19.0M
value, 2026 filers
48.9%
of shares outstanding (5.3M sh)
7
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of NEPH's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | WEXFORD CAPITAL LP | 3.6M | $12.9M | 1.6% | 33.2% | 0.0% |
| 2 | Topline Capital Management, LLC | 535,698 | $1.9M | 0.5% | 4.9% | -8.0% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 198,643 | $709,156 | 0.0% | 1.8% | 0.0% |
| 4 | MORGAN STANLEY | 128,915 | $460,227 | 0.0% | 1.2% | +16.2% |
| 5 | Cornerstone Capital, Inc. | 128,700 | $459,459 | 0.0% | 1.2% | 0.0% |
| 6 | BARD ASSOCIATES INC | 118,003 | $421,271 | 0.1% | 1.1% | -2.6% |
| 7 | RENAISSANCE TECHNOLOGIES LLC | 77,504 | $276,689 | 0.0% | 0.7% | -22.0% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 70,263 | $250,916 | 0.0% | 0.6% | -3.7% |
| 9 | Mesirow Financial Investment Management, Inc. | 60,000 | $214,200 | 0.0% | 0.6% | -50.0% |
| 10 | HighTower Advisors, LLC | 59,710 | $213,165 | 0.0% | 0.5% | 0.0% |
| 11 | NAVELLIER & ASSOCIATES INC | 53,479 | $190,920 | 0.0% | 0.5% | +179.6% |
| 12 | ESSEX INVESTMENT MANAGEMENT CO LLC | 38,927 | $138,969 | 0.0% | 0.4% | -0.1% |
| 13 | VANGUARD FIDUCIARY TRUST CO | 36,901 | $131,737 | 0.0% | 0.3% | 0.0% |
| 14 | BLAIR WILLIAM & CO/IL | 36,249 | $129,409 | 0.0% | 0.3% | 0.0% |
| 15 | CITADEL ADVISORS LLC | 29,044 | $103,687 | 0.0% | 0.3% | +39.0% |
| 16 | DIMENSIONAL FUND ADVISORS LP | 22,164 | $79,126 | 0.0% | 0.2% | +6.8% |
| 17 | BlackRock, Inc.NEW | 18,822 | $67,195 | 0.0% | 0.2% | new |
| 18 | De Lisle Partners LLP | 17,400 | $62,118 | 0.0% | 0.2% | -30.4% |
| 19 | NORTHERN TRUST CORP | 16,706 | $59,640 | 0.0% | 0.2% | +54.3% |
| 20 | STATE STREET CORP | 15,698 | $56,042 | 0.0% | 0.1% | 0.0% |
| 21 | GOLDMAN SACHS GROUP INC | 12,836 | $45,825 | 0.0% | 0.1% | -9.4% |
| 22 | MERCER GLOBAL ADVISORS INC /ADVNEW | 12,500 | $44,625 | 0.0% | 0.1% | new |
| 23 | ELKHORN PARTNERS LIMITED PARTNERSHIP | 11,000 | $39,270 | 0.0% | 0.1% | -8.3% |
| 24 | Cannell & Spears LLC | 11,000 | $39,270 | 0.0% | 0.1% | 0.0% |
| 25 | UBS Group AGNEW | 831 | $2,967 | 0.0% | 0% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.