ProPhase Labs, Inc. (PRPH) Institutional Ownership

Ownership Summary

The institutional landscape for ProPhase Labs, Inc. (NASDAQ:PRPH) includes 29 filers as of the latest reporting cycle ending September 2025.

• These investors collectively held 7.1% of the company's total shares outstanding in September 2025, up from 6.4% in June 2025.
• The company experienced a 31.57% quarterly change in institutional shares held, alongside an increase of 7.41% in total owners annually.
• Of these 29 institutional investors, 10 increased their holdings in ProPhase Labs, while 6 of them reduced positions, and 13 investors maintained their exposure.
• Collectively, institutional investors increased their stake in ProPhase Labs to 2.97Mn shares as of September 2025, a change that is up by 711.53K shares quarter on quarter and up 1.21Mn shares year over year.
• As of September 30, 2025, SYKON CAPITAL LLC held ProPhase Labs's largest shareholding position with over 644.79K shares, representing 1.55% of total outstanding shares.
• Among the most significant buyers of ProPhase Labs during September 2025 were SUSQUEHANNA INTERNATIONAL GROUP, LLP (295.90K), Accretive Wealth Partners, LLC (250.00K), Apollon Wealth Management, LLC (182.46K), VANGUARD GROUP INC (123.65K), GEODE CAPITAL MANAGEMENT, LLC (43.87K).
• Leading sellers of ProPhase Labs stock in September 2025 included RENAISSANCE TECHNOLOGIES LLC (127.82K), UBS Group AG (37.93K), JANE STREET GROUP, LLC (34.69K), BANK OF AMERICA CORP /DE/ (26.07K), Cambridge Investment Research Advisors, Inc. (15.95K).
• The top 10 institutional holders of ProPhase Labs for the quarter ending September 2025 included SYKON CAPITAL LLC (644.79K), VANGUARD GROUP INC (531.92K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (397.91K), GEODE CAPITAL MANAGEMENT, LLC (302.93K), Accretive Wealth Partners, LLC (250.00K), HighTower Advisors, LLC (237.34K), Apollon Wealth Management, LLC (182.46K), CHAPIN DAVIS, INC. (80.00K), TWO SIGMA SECURITIES, LLC (47.47K), STATE STREET CORP (44.66K).