Atai Beckley N.V. (ATAI) Institutional Ownership

Institutions by Trading Activity

217,601,496Shares Outstanding

50,426,017Shares held by institutions

$206,494,540Value of institutional holdings

23.17%Institutional ownership %

82.16%Shares Changed QoQ

118No. of institutional investors

Atai Beckley N.V. (NASDAQ:ATAI) is held by 118 institutional investors per 13F filings through December 2025.

Their combined ownership stood at 22.7% of 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.
Of these 118 holders, 69 added to their stakes in Atai Beckley, 21 trimmed positions, and 28 made no changes.
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.
Sankala Group LLC leads ownership in ATAI with 52 shares as of December 31, 2025, equal to 0.0% of outstanding shares.
Business Quant data shows the 1 biggest positions in Atai Beckley as of December 2025 are held by Sankala Group LLC (52).

50,426,017 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
ADAGE CAPITAL PARTNERS GP, L.L.C.	31 Dec, 2025	7,079,846	1,645,064	30.27%	$28,956,570.00
Morgan Stanley	31 Dec, 2025	4,820,973	5,410	0.11%	$19,717,783.00
Deep Track Capital, LP	31 Dec, 2025	4,677,289	4,677,289	0.00%	$19,130,112.00
BlackRock, Inc.	31 Dec, 2025	2,813,208	2,808,808	63,836.55%	$11,506,021.00
Foresite Capital Management VI LLC	31 Dec, 2025	2,750,000	2,750,000	0.00%	$11,247,500.00
RTW INVESTMENTS, LP	31 Dec, 2025	2,000,000	2,000,000	0.00%	$8,180,000.00
Goldman Sachs Group Inc	31 Dec, 2025	1,860,026	1,410,980	314.22%	$7,607,506.00
ADAR1 Capital Management, LLC	31 Dec, 2025	1,826,484	913,242	100.00%	$7,470,320.00
Ameriprise Financial Inc	31 Dec, 2025	1,735,252	1,735,252	0.00%	$7,097,181.00
Ally Bridge Group (NY) LLC	31 Dec, 2025	1,713,105	-573,900	-25.09%	$7,006,599.00
Eagle Health Investments LP	31 Dec, 2025	1,678,400	1,678,400	0.00%	$6,864,656.00
CITADEL ADVISORS LLC	31 Dec, 2025	1,541,506	-1,034,488	-40.16%	$6,304,759.00
HRT FINANCIAL LP	31 Dec, 2025	1,469,246	1,067,970	266.14%	$6,009.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	1,410,229	1,046,403	287.61%	$5,767,837.00
Qube Research & Technologies Ltd	31 Dec, 2025	1,281,190	1,211,305	1,733.28%	$5,240,067.00
Point72 Asset Management, L.P.	31 Dec, 2025	935,712	935,712	0.00%	$3,827,062.00
CenterBook Partners LP	31 Dec, 2025	780,501	129,370	19.87%	$3,192,249.00
JANE STREET GROUP, LLC	31 Dec, 2025	759,996	162,722	27.24%	$3,108,383.00
Brown University	31 Dec, 2025	718,500	0	0.00%	$2,938,665.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	607,528	157,673	35.05%	$2,484,790.00

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