Atai Beckley N.V. (ATAI) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

1,777,180Shares held by institutions

$6,051,298Value of institutional holdings

12.82%Institutional ownership %

38.73%Shares Changed QoQ

93No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Atai Beckley N.V. (NASDAQ:ATAI) has 118 institutional investors with active 13F positions as of December 2025.

Collectively, these holders controlled 22.7% of Atai Beckley's outstanding shares in December 2025, up from 20.6% in September 2025.
They increased total shares held in Atai Beckley by 80.39% from last quarter, and the number of investors in ATAI increased 31.11% annually.
During the quarter, 69 of these 118 funds increased positions in ATAI, 21 reduced exposure, and 28 held steady.
The aggregate institutional position in Atai Beckley amounted to 49.32Mn shares as of December 2025, up by 21.98Mn shares quarter on quarter, and up 31.32Mn shares year over year.
ADAGE CAPITAL PARTNERS GP, L.L.C. is the top holder of Atai Beckley as of December 31, 2025, with 7.08Mn shares representing 3.25% of outstanding stock.
The largest buyers of Atai Beckley for the quarter ending December 2025 were Deep Track Capital, LP (4.68Mn), BlackRock, Inc. (2.81Mn), Foresite Capital Management VI LLC (2.75Mn), RTW INVESTMENTS, LP (2.0Mn), Ameriprise Financial Inc (1.74Mn).
Leading sellers of Atai Beckley shares for the quarter ending December 2025 were Jpmorgan Chase & Co (1.24Mn), Pale Fire Capital SE (1.03Mn), CITADEL ADVISORS LLC (1.03Mn), Ally Bridge Group (NY) LLC (573.9K), D. E. Shaw & Co., Inc. (447.93K).
Atai Beckley's 10 largest shareholders as of December 2025 include ADAGE CAPITAL PARTNERS GP, L.L.C. (7.08Mn), Morgan Stanley (4.82Mn), Deep Track Capital, LP (4.68Mn), BlackRock, Inc. (2.81Mn), Foresite Capital Management VI LLC (2.75Mn), RTW INVESTMENTS, LP (2.0Mn), ADAR1 Capital Management, LLC (1.83Mn), Ameriprise Financial Inc (1.74Mn), Ally Bridge Group (NY) LLC (1.71Mn), Eagle Health Investments LP (1.68Mn) per Business Quant data.

118 Institutional Holders

1,777,180 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	2,808,808	63,836.55%	$0.00
ADAGE CAPITAL PARTNERS GP, L.L.C.	31 Dec, 2025	1,645,064	30.27%	$0.00
Deep Track Capital, LP	31 Dec, 2025	4,677,289	0.00%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	179,000	100.00%	$0.00
Morgan Stanley	31 Dec, 2025	5,410	0.11%	$0.00
Foresite Capital Management VI LLC	31 Dec, 2025	2,750,000	0.00%	$0.00
Barclays Plc	31 Dec, 2025	-228,148	-66.31%	$0.00
RTW INVESTMENTS, LP	31 Dec, 2025	2,000,000	0.00%	$0.00
ADAR1 Capital Management, LLC	31 Dec, 2025	913,242	100.00%	$0.00
Ameriprise Financial Inc	31 Dec, 2025	1,735,252	0.00%	$0.00
Ally Bridge Group (NY) LLC	31 Dec, 2025	-573,900	-25.09%	$0.00
CITADEL ADVISORS LLC	31 Dec, 2025	-1,034,488	-40.16%	$0.00
Eagle Health Investments LP	31 Dec, 2025	1,678,400	0.00%	$0.00
HRT FINANCIAL LP	31 Dec, 2025	1,067,970	266.14%	$0.00
Qube Research & Technologies Ltd	31 Dec, 2025	1,211,305	1,733.28%	$0.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	1,046,403	287.61%	$0.00
Point72 Asset Management, L.P.	31 Dec, 2025	935,712	0.00%	$0.00
Goldman Sachs Group Inc	31 Dec, 2025	480,967	107.11%	$0.00
CenterBook Partners LP	31 Dec, 2025	129,370	19.87%	$0.00
JANE STREET GROUP, LLC	31 Dec, 2025	162,722	27.24%	$0.00

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