NEPH NEPHROS INC: institutional ownership and insider trading
34 funds reported holding $20.1M of NEPHROS INC in their latest 13F filings; in Q2 2026 funds net sold $204K, with 7 new positions and 1 funds selling out; over the last 12 months insiders bought $0 and sold $0 on the open market.
Famous investors holding NEPH
- Renaissance Technologies (Renaissance Technologies): $277K, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $104K, 0.0% of the portfolio
Largest institutional holders of NEPH
- WEXFORD CAPITAL LP — $12.9M
- Topline Capital Management, LLC — $1.91M
- VANGUARD GROUP INC — $1.14M
- VANGUARD CAPITAL MANAGEMENT LLC — $709K
- MORGAN STANLEY (MS, MS-PA, MS-PE, MS-PF, MS-PI, MS-PK, MS-PL, MS-PO, MS-PP, MS-PQ) — $460K
- Cornerstone Capital, Inc. — $459K
- BARD ASSOCIATES INC — $421K
- RENAISSANCE TECHNOLOGIES LLC — $277K
- GEODE CAPITAL MANAGEMENT, LLC — $251K
- Mesirow Financial Investment Management, Inc. — $214K
5%+ owners
- Charles E. Davidson: 5.7% (Schedule 13G, filed Sep 16, 2026)