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Nephros (NEPH) Institutional Ownership

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$3.68 +0.55 (+17.57%)
Closing price 04:00 PM Eastern
Extended Trading
$3.58 -0.11 (-2.85%)
As of 04:40 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Nephros (NASDAQ:NEPH)

Current
Institutional Ownership
Percentage
41.10%
Number of
Institutional Buyers
(last 12 months)
16
Total
Institutional Inflows
(last 12 months)
$1.92M
Number of
Institutional Sellers
(last 12 months)
5
Total
Institutional Outflows
(last 12 months)
$474.96K
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NEPH Institutional Buying and Selling by Quarter

Nephros Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/14/2026 Renaissance Technologies LLC99,400$296K0.0%-4.2%0.916%
5/7/2026 Dimensional Fund Advisors LP20,745$62K0.0%+52.5%0.195%
2/18/2026 XTX Topco Ltd21,617$105K0.0%+48.5%0.203%
2/18/2026 Quadrature Capital Ltd23,004$112K0.0%N/A0.216%
2/17/2026 Elkhorn Partners Limited Partnership7,000$34K0.0%-44.0%0.066%
2/16/2026 Bard Associates Inc.121,619$594K0.2%-4.3%1.144%
2/13/2026 Kestra Advisory Services LLC6,015$29K0.0%N/A0.057%
2/13/2026 Marshall Wace LLP21,983$107K0.0%N/A0.207%
2/13/2026 Essex Investment Management Co. LLC38,984$190K0.0%+57.1%0.367%
2/13/2026 Heron Bay Capital Management13,471$66K0.0%N/A0.127%
2/13/2026 De Lisle Partners LLP25,000$122K0.0%N/A0.235%
2/12/2026 Renaissance Technologies LLC103,772$506K0.0%+25.8%0.976%
2/6/2026 HighTower Advisors LLC59,710$291K0.0%+7.2%0.562%
2/5/2026 Mesirow Financial Investment Management Inc.50,000$244K0.0%+262.3%0.470%
2/3/2026 Navellier & Associates Inc.27,175$133K0.0%N/A0.256%
11/17/2025 Wexford Capital LP3,617,033$17.11M2.5%+0.2%34.036%
11/17/2025 Susquehanna International Group LLP10,373$49K0.0%-64.7%0.098%
11/17/2025 Citadel Advisors LLC16,545$78K0.0%+39.2%0.156%
11/17/2025 Bard Associates Inc.127,121$601K0.2%-3.1%1.196%
11/14/2025 Topline Capital Management LLC596,300$2.82M0.5%+24.9%5.611%
11/12/2025 Dimensional Fund Advisors LP13,601$64K0.0%N/A0.128%
11/7/2025Vanguard Group Inc.281,306$1.33M0.0%-13.0%2.654%
8/15/2025 Topline Capital Management LLC477,449$1.95M0.3%+13.1%4.504%
8/15/2025 Elkhorn Partners Limited Partnership14,500$59K0.0%-62.7%0.137%
8/8/2025 Geode Capital Management LLC93,187$381K0.0%+3.2%0.879%
5/12/2025Bard Associates Inc.143,221$246K0.1%-7.8%1.351%
2/14/2025Topline Capital Management LLC419,887$617K0.1%N/A3.984%
2/6/2025Bard Associates Inc.155,271$228K0.1%-9.9%1.473%
8/9/2024Dimensional Fund Advisors LP17,631$37K0.0%N/A0.167%
4/26/2024Mesirow Financial Investment Management Inc.15,383$34K0.0%N/A0.146%
2/10/2023Bard Associates Inc.194,789$225K0.1%-22.7%1.887%
11/15/2022Elkhorn Partners Limited Partnership50,341$46K0.0%+48.1%0.488%
8/11/2022Bard Associates Inc.263,754$404K0.2%+7.0%2.556%
8/1/2022Cowen Prime Advisors LLC42,500$65K0.0%-47.1%0.412%
5/23/2022Cantor Fitzgerald L. P.12,813$56K0.0%N/A0.124%
5/11/2022Bard Associates Inc.246,408$1.08M0.4%+6.0%2.388%
5/10/2022Elkhorn Partners Limited Partnership23,712$104K0.1%+56.0%0.230%
5/2/2022Cowen Prime Advisors LLC80,400$354K0.1%-87.3%0.780%
2/19/2022Wexford Capital LP3,650,529$646.53M27.0%N/A35.674%
2/14/2022Elkhorn Partners Limited Partnership15,200$90K0.1%+78.8%0.149%
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NEPH Institutional Ownership - Frequently Asked Questions

During the previous two years, 20 institutional investors and hedge funds held shares of Nephros. The most heavily invested institutionals were Wexford Capital LP ($17.11M), Topline Capital Management LLC ($2.82M), Vanguard Group Inc. ($1.33M), Bard Associates Inc. ($594K), Geode Capital Management LLC ($381K), Renaissance Technologies LLC ($296K), and HighTower Advisors LLC ($291K).Learn more on Nephros' institutional investors.

41.10% of Nephros' stock is owned by institutional investors. Learn more on NEPH's institutional investor holdings.

Of the 16 institutional investors that purchased Nephros' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Topline Capital Management LLC ($594.10K), Dimensional Fund Advisors LP ($38.38K), Mesirow Financial Investment Management Inc. ($36.20K), Navellier & Associates Inc. ($27.18K), De Lisle Partners LLP ($25K), Quadrature Capital Ltd ($23.00K), and Marshall Wace LLP ($21.98K).

Institutional investors have bought a total of 410,805 shares in the last 24 months. This purchase volume represents approximately $1.92M in transactions.

The following institutional investors have sold Nephros stock in the last 24 months: Vanguard Group Inc. ($42.14K), Elkhorn Partners Limited Partnership ($29.92K), Susquehanna International Group LLP ($19.05K), Bard Associates Inc. ($9.50K), and Renaissance Technologies LLC ($4.37K).

Institutional investors have sold a total of 104,987 shares in the last 24 months. This volume of shares sold represents approximately $474.96K in transactions.


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This page (NASDAQ:NEPH) was last updated on 5/18/2026 by MarketBeat.com Staff.
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