NEPHROS INC (NEPH)
Institutional ownership reported to the SEC as of Q2 2026, across 28 quarters.
Institutions report 5,370,382 shares against 10,860,120 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| WEXFORD CAPITAL LP | $12.9M | 3,600,552 | 1.64% | 25q | HELD |
| Topline Capital Management, LLC | $1.9M | 535,698 | 0.50% | 7q | -8.0%-$165.2K |
| VANGUARD CAPITAL MANAGEMENT LLC | $709.2K | 198,643 | 0.00% | 2q | HELD |
| MORGAN STANLEY | $460.2K | 128,915 | 0.00% | 26q | +16.2%+$64.3K |
| Cornerstone Capital, Inc. | $459.5K | 128,700 | 0.04% | 2q | HELD |
| BARD ASSOCIATES INC | $421.3K | 118,003 | 0.09% | 26q | -2.6%-$11.4K |
| RENAISSANCE TECHNOLOGIES LLC | $276.7K | 77,504 | 0.00% | 5q | -22.0%-$78.2K |
| GEODE CAPITAL MANAGEMENT, LLC | $250.9K | 70,263 | 0.00% | 18q | -3.7%-$9.5K |
| Mesirow Financial Investment Management, Inc. | $214.2K | 60,000 | 0.00% | 11q | -50.0%-$214.2K |
| HighTower Advisors, LLC | $213.2K | 59,710 | 0.00% | 27q | HELD |
| CITADEL ADVISORS LLC | $207.4K | 58,088 | 0.00% | 9q | +178.1%+$132.8K |
| NAVELLIER & ASSOCIATES INC | $190.9K | 53,479 | 0.02% | 3q | +179.6%+$122.6K |
| ESSEX INVESTMENT MANAGEMENT CO LLC | $139.0K | 38,927 | 0.02% | 5q | HELD |
| VANGUARD FIDUCIARY TRUST CO | $131.7K | 36,901 | 0.00% | 2q | HELD |
| BLAIR WILLIAM & CO/IL | $129.4K | 36,249 | 0.00% | 28q | HELD |
| STATE STREET CORP | $112.1K | 31,396 | 0.00% | 17q | +100.0%+$56.0K |
| MERCER GLOBAL ADVISORS INC /ADV | $89.2K | 25,000 | 0.00% | new | NEW |
| DIMENSIONAL FUND ADVISORS LP | $79.1K | 22,164 | 0.00% | 4q | +6.8%+$5.1K |
| BlackRock, Inc. | $67.2K | 18,822 | 0.00% | new | NEW |
| De Lisle Partners LLP | $62.1K | 17,400 | 0.01% | 3q | -30.4%-$27.1K |
| NORTHERN TRUST CORP | $59.6K | 16,706 | 0.00% | 3q | +54.3%+$21.0K |
| GOLDMAN SACHS GROUP INC | $45.8K | 12,836 | 0.00% | 4q | -9.4%-$4.7K |
| ELKHORN PARTNERS LIMITED PARTNERSHIP | $39.3K | 11,000 | 0.03% | 27q | -8.3%-$3.6K |
| Cannell & Spears LLC | $39.3K | 11,000 | 0.00% | 3q | HELD |
| ROYAL BANK OF CANADA | $3.0K | 827 | 0.00% | 3q | +10.7% |
| UBS Group AG | $3.0K | 831 | 0.00% | new | NEW |
| JONES FINANCIAL COMPANIES LLLP | $819 | 227 | 0.00% | 6q | +632.3% |
| OSAIC HOLDINGS, INC. | $624 | 175 | 0.00% | 5q | HELD |
| SBI Securities Co., Ltd. | $536 | 150 | 0.00% | new | NEW |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | $475 | 133 | 0.00% | new | NEW |
| HARBOUR INVESTMENTS, INC. | $179 | 50 | 0.00% | 3q | HELD |
| BARCLAYS PLC | $96 | 27 | 0.00% | new | NEW |
| FMR LLC | $22 | 6 | 0.00% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-09-16 | 13G | Charles E. Davidson INDIVIDUALwith 1 co-filers | 5.7% |
| 2026-09-16 | 13D/A | Wexford Capital LPwith 3 co-filers | 2.1% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 33 | $19.2M | 5,370,382 | 7 | 8 | 8 | 0.0% |
| Q1 2026 | 27 | $16.0M | 5,370,279 | 1 | 6 | 7 | 0.0% |
| Q4 2025 | 35 | $25.9M | 5,302,280 | 15 | 10 | 5 | 0.0% |
| Q3 2025 | 23 | $23.7M | 5,015,032 | 4 | 3 | 7 | 0.0% |
| Q2 2025 | 20 | $19.8M | 4,852,312 | 4 | 5 | 5 | 0.0% |
| Q1 2025 | 17 | $8.0M | 4,664,676 | 1 | 5 | 5 | 0.0% |
| Q4 2024 | 17 | $6.9M | 4,711,852 | 1 | 2 | 6 | 0.0% |
| Q3 2024 | 17 | $7.3M | 4,284,992 | 0 | 5 | 5 | 0.0% |
| Q2 2024 | 18 | $9.2M | 4,320,590 | 3 | 4 | 5 | 0.0% |
| Q1 2024 | 18 | $9.4M | 4,275,546 | 3 | 8 | 3 | 0.0% |
| Q4 2023 | 18 | $15.1M | 4,365,617 | 4 | 5 | 1 | 0.0% |
| Q3 2023 | 14 | $6.3M | 4,288,960 | 1 | 3 | 3 | 0.0% |
| Q2 2023 | 15 | $6.6M | 4,279,808 | 0 | 4 | 5 | 0.0% |
| Q1 2023 | 17 | $4.6M | 4,273,188 | 1 | 1 | 6 | 0.0% |
| Q4 2022 | 18 | $4.9M | 4,266,471 | 3 | 2 | 4 | 0.0% |
| Q3 2022 | 17 | $3.9M | 4,339,484 | 3 | 5 | 2 | 0.0% |
| Q2 2022 | 15 | $968.0K | 632,473 | 4 | 5 | 3 | 0.0% |
| Q1 2022 | 13 | $2.8M | 643,171 | 4 | 4 | 2 | 0.0% |
| Q4 2021 | 12 | $9.2M | 1,551,035 | 0 | 4 | 4 | 0.0% |
| Q3 2021 | 15 | $14.9M | 1,700,757 | 2 | 5 | 2 | 0.0% |
| Q2 2021 | 17 | $60.1M | 5,916,917 | 3 | 6 | 3 | 0.0% |
| Q1 2021 | 17 | $34.8M | 5,231,367 | 4 | 6 | 2 | 0.0% |
| Q4 2020 | 14 | $45.3M | 5,282,295 | 1 | 6 | 4 | 0.0% |
| Q3 2020 | 15 | $32.4M | 4,474,719 | 1 | 4 | 4 | 0.0% |
| Q2 2020 | 18 | $37.8M | 4,545,318 | 2 | 4 | 4 | 0.0% |
| Q1 2020 | 20 | $28.9M | 4,378,796 | 8 | 5 | 3 | 0.0% |
| Q4 2019 | 13 | $4.6M | 458,615 | 7 | 1 | 2 | 0.0% |
| Q3 2019 | 7 | $2.1M | 258,124 | 7 | 0 | 0 | 0.0% |