Atai Beckley N.V. - Common Shares (ATAI) Institutional Ownership

13F Institutional Holders and Ownership History from Q2 2021 to Q4 2025

Type / Class
Equity / Common Shares
Symbol
ATAI on Nasdaq
Shares outstanding
201,708,000
Price per share
$4.09
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
43,668,783
Total reported value
$231,059,153
% of total 13F portfolios
0%
Share change
+14,490,457
Value change
+$80,864,113
Number of holders
129
Price from insider filings
$4.09
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Atai Beckley N.V. - Common Shares (ATAI) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Galaxy Group Funding ECI U LLC 4.2% $11,945,148 8,471,736 Galaxy Group Funding ECI U LLC 31 Mar 2025

As of 30 Sep 2025, 129 institutional investors reported holding 43,668,783 shares of Atai Beckley N.V. - Common Shares (ATAI). This represents 22% of the company’s total 201,708,000 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Atai Beckley N.V. - Common Shares (ATAI) together control 19% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
UBS Group AG 3.8% 7,677,289 -0.29% 0.01% $40,612,859
ADAGE CAPITAL PARTNERS GP, L.L.C. 2.7% 5,434,782 0% 0.05% $28,749,997
MORGAN STANLEY 2.4% 4,815,562 +38% 0% $25,474,322
CITADEL ADVISORS LLC 1.3% 2,575,994 +118% 0.01% $13,627,008
Ally Bridge Group (NY) LLC 1.1% 2,287,005 10% $12,098,256
ARK Investment Management LLC 1% 2,019,551 0.06% $10,683,425
T. Rowe Price Investment Management, Inc. 0.96% 1,939,951 0.01% $10,263,000
MILLENNIUM MANAGEMENT LLC 0.54% 1,097,768 -7.6% 0% $5,807,193
Pale Fire Capital SE 0.54% 1,080,768 -59% 0.63% $5,717,263
MARSHALL WACE, LLP 0.53% 1,065,881 +281% 0.01% $5,638,511
MOORE CAPITAL MANAGEMENT, LP 0.47% 952,380 0% 0.1% $5,038,090
ADAR1 Capital Management, LLC 0.45% 913,242 0.48% $4,831,050
JPMORGAN CHASE & CO 0.38% 769,600 +5630% 0% $4,071,183
Brown University 0.36% 718,500 0% 2.2% $3,800,865
D. E. Shaw & Co., Inc. 0.35% 712,445 +2.5% 0% $3,768,834
CenterBook Partners LP 0.32% 651,131 0.17% $3,444,483
GROUP ONE TRADING LLC 0.3% 600,507 +1491% 0.09% $3,176,682
JANE STREET GROUP, LLC 0.3% 597,274 +519% 0% $3,159,580
AdvisorShares Investments LLC 0.25% 506,311 +30% 0.44% $2,678,385
FRED ALGER MANAGEMENT, LLC 0.24% 488,855 0.01% $2,586,043
SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.22% 449,855 0% $2,379,733
GOLDMAN SACHS GROUP INC 0.22% 449,046 +29% 0% $2,375,453
VANGUARD GROUP INC 0.22% 444,027 +1.6% 0% $2,348,903
HRT FINANCIAL LP 0.2% 401,276 0.01% $2,122,000
TWO SIGMA INVESTMENTS, LP 0.18% 363,826 -29% 0% $1,924,640

Institutional Holders of Atai Beckley N.V. - Common Shares (ATAI) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 438,048 $1,780,440 +$573,833 $4.09 9
2025 Q3 43,668,783 $231,059,153 +$80,864,113 $5.29 129
2025 Q2 29,166,674 $63,894,009 +$17,390,974 $2.19 93
2025 Q1 21,895,870 $29,726,883 +$10,047,164 $1.36 79
2024 Q4 14,528,665 $19,342,236 +$3,642,616 $1.33 87
2024 Q3 11,633,571 $13,467,869 -$480,314 $1.16 72
2024 Q2 11,874,389 $15,799,635 -$1,274,124 $1.33 83
2024 Q1 12,217,656 $24,094,306 +$319,412 $1.97 71
2023 Q4 103,232 $145,557 $1.41 1
2023 Q3 14,545,213 $18,921,047 -$739,034 $1.29 92
2023 Q2 15,172,869 $26,108,027 -$2,794,394 $1.72 92
2023 Q1 17,120,114 $30,973,159 -$17,560,887 $1.81 100
2022 Q4 24,903,861 $66,222,390 -$3,915,533 $2.66 108
2022 Q3 26,395,830 $87,364,394 +$20,903,926 $3.31 89
2022 Q2 21,483,411 $78,580,592 +$14,583,751 $3.64 87
2022 Q1 15,412,006 $78,381,192 +$3,483,845 $5.09 77
2021 Q4 14,200,163 $108,326,000 +$9,708,379 $7.63 78
2021 Q3 11,472,683 $172,347,987 +$172,302 $14.79 51
2021 Q2 11,635,318 $212,209,000 +$212,187,052 $18.50 42