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Who owns Nephros (NEPH) stock

33 funds reported Nephros (NEPH) shares in their latest 13F filings, worth $20.1M in all. The largest holder is Wexford Capital LP ($12.9M). Last quarter 14 funds added to their stakes and 10 cut them.

Largest holders of NEPH (13F)Largest holders of NEPH (13F)Wexford Capital LP$12.9MTopline Capital Management, LLC$1.9MVanguard Group$1.1MVanguard Capital Management LLC$709KMorgan Stanley$460KCornerstone Capital$459KBard Associates$421KRenaissance Technologies LLC$277KGeode Capital Management, LLC$251KMesirow Financial Investment Mana…$214K

Largest holders (13F)

FundSharesValueChangeQuarter
Wexford Capital LP3,600,552$12.9Munchanged2026-06-30
Topline Capital Management, LLC535,698$1.9Mdecrease2026-06-30
Vanguard Group233,644$1.1Mdecrease2025-12-31
Vanguard Capital Management LLC198,643$709Kunchanged2026-06-30
Morgan Stanley128,915$460Kincrease2026-06-30
Cornerstone Capital128,700$459Kunchanged2026-06-30
Bard Associates118,003$421Kdecrease2026-06-30
Renaissance Technologies LLC77,504$277Kdecrease2026-06-30
Geode Capital Management, LLC70,263$251Kdecrease2026-06-30
Mesirow Financial Investment Management60,000$214Kdecrease2026-06-30
HighTower Advisors, LLC59,710$213Kunchanged2026-06-30
Navellier & Associates53,479$191Kincrease2026-06-30
Essex Investment Management Co LLC38,927$144Kunchanged2026-09-30
Vanguard Fiduciary Trust36,901$132Kunchanged2026-06-30
Blair William36,249$129Kunchanged2026-06-30

Nephros' latest quarter

Nephros, Q3 2026: revenue $5.6M (+18% year over year), operating margin 8.9%, net earnings $512K, operating cash flow −$150K. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most NEPH stock?

By the latest 13F filings: Wexford Capital LP ($12.9M); Topline Capital Management, LLC ($1.9M); Vanguard Group ($1.1M); Vanguard Capital Management LLC ($709K); Morgan Stanley ($460K).

What is the short interest in NEPH?

15,442 shares were sold short at the 2026-10-15 settlement, -38.97% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.