Atai Beckley N.V. (ATAI) Institutional Ownership

Ownership Summary

Recent 13F filings as of September 2025 show that 128 institutional investors hold a position in Atai Beckley N.V. (NASDAQ:ATAI).

• Atai Beckley N.V saw its institutional ownership percentage rose to 20.6% in September 2025 from 14.0% in June 2025.
• The company experienced a 59.38% quarterly change in institutional shares held, alongside an increase of 72.97% in total owners annually.
• Among the 128 institutional holders of Atai Beckley N.V, 75 added to their stakes while 19 trimmed their positions and 34 held steady.
• The total number of shares held by institutions in Atai Beckley N.V increased to 44.22Mn as of September 2025, a net change of up by 16.48Mn shares quarter on quarter, and up 32.98Mn shares year over year.
• UBS Group AG continues to be the largest institutional holder of Atai Beckley N.V as of September 30, 2025, with a position of 7.68Mn shares, representing 3.58% of the company's outstanding stock.
• Among the most significant buyers of Atai Beckley N.V during September 2025 were CITADEL ADVISORS LLC (2.55Mn), Ally Bridge Group (NY) LLC (2.29Mn), ARK Investment Management LLC (2.01Mn), T. Rowe Price Investment Management, Inc. (1.94Mn), MORGAN STANLEY (1.32Mn).
• Leading sellers of Atai Beckley N.V stock in September 2025 included Pale Fire Capital SE (1.56Mn), MILLENNIUM MANAGEMENT LLC (190.40K), TWO SIGMA INVESTMENTS, LP (146.24K), Shay Capital LLC (107.45K), BARCLAYS PLC (67.35K).
• The top 10 institutional holders of Atai Beckley N.V for the quarter ending September 2025 included UBS Group AG (7.68Mn), ADAGE CAPITAL PARTNERS GP, L.L.C. (5.43Mn), MORGAN STANLEY (4.82Mn), CITADEL ADVISORS LLC (2.58Mn), Ally Bridge Group (NY) LLC (2.29Mn), ARK Investment Management LLC (2.02Mn), T. Rowe Price Investment Management, Inc. (1.94Mn), MILLENNIUM MANAGEMENT LLC (1.10Mn), Pale Fire Capital SE (1.08Mn), MARSHALL WACE, LLP (1.07Mn).