NEPHROS INC (NEPH) Institutional Ownership Changes & 13F Activity

NEPHROS INC (NEPH). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Mesirow Financial Investment Management, Inc., Hightower Advisors, Llc, Topline Capital Management, Llc, Navellier & Associates Inc, and Renaissance Technologies LLC.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Citadel Advisors LlcBuy+8,156+39.0%29,044$103.69KQ2 2026Sep 02, 2026
Mercer Global Advisors IncBuy+12,500—12,500$44.63KQ2 2026Aug 19, 2026
Topline Capital Management, LlcSell-46,269-8.0%535,698$1.91MQ2 2026Aug 14, 2026
Goldman Sachs Group IncSell-1,327-9.4%12,836$45.83KQ2 2026Aug 14, 2026
Jones Financial Companies LllpBuy+196+632.3%227$819.00Q2 2026Aug 14, 2026
Royal Bank Of CanadaBuy+80+10.7%827$3.00KQ2 2026Aug 14, 2026
Barclays PlcBuy+27—27$96.00Q2 2026Aug 14, 2026
Renaissance Technologies LLCSell-21,896-22.0%77,504$276.69KQ2 2026Aug 13, 2026
Morgan StanleyBuy+18,000+16.2%128,915$460.23KQ2 2026Aug 13, 2026
Northern Trust CorpBuy+5,878+54.3%16,706$59.64KQ2 2026Aug 13, 2026
Elkhorn Partners Limited PartnershipSell-1,000-8.3%11,000$39.27KQ2 2026Aug 13, 2026
Ubs Group AgBuy+831—831$2.97KQ2 2026Aug 13, 2026
Fmr LlcBuy+6—6$22.00Q2 2026Aug 13, 2026
De Lisle Partners LlpSell-7,600-30.4%17,400$62.12KQ2 2026Aug 12, 2026
Bard Associates IncSell-3,199-2.6%118,003$421.27KQ2 2026Aug 12, 2026
Geode Capital Management, LlcSell-2,662-3.7%70,263$250.92KQ2 2026Aug 12, 2026
Dimensional Fund Advisors LpBuy+1,419+6.8%22,164$79.13KQ2 2026Aug 11, 2026
Blackrock, Inc.Buy+18,822—18,822$67.19KQ2 2026Aug 07, 2026
Essex Investment Management Co LlcSell-57-0.1%38,927$138.97KQ2 2026Aug 06, 2026
Navellier & Associates IncBuy+34,353+179.6%53,479$190.92KQ2 2026Aug 04, 2026
Sbi Securities Co., Ltd.Buy+150—150$536.00Q2 2026Jul 23, 2026
Mesirow Financial Investment Management, Inc.Sell-60,000-50.0%60,000$214.20KQ2 2026Jul 22, 2026
Prelude Capital Management, LlcSell-13,680-100.0%0$0.00Q2 2026May 15, 2026
Hightower Advisors, LlcSell-59,710-100.0%0$0.00Q2 2026May 05, 2026
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Frequently asked questions about NEPH activity

  • Which institutional owners are buying NEPH?

    Institutional owners buying NEPH include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in NEPH activity?

    "Buy" means an investor increased their reported position in NEPH compared to the prior reporting period. This reflects growing exposure to NEPHROS INC (NEPH) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in NEPH increasing?

    Institutional interest in NEPH can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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