Latest Period
Q1 2026
Security Snapshot
AtaiBeckley Inc. - Common stock, par value $0.01 per share (ATAI) Institutional Ownership
CUSIP: 04650F101
13F Institutional Holders and Ownership History from Q4 2025 to Q2 2026
Institutions Reporting
175
Shares (Excl. Options)
99,158,600
Price
$3.54
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- Security type / class
- Equity / Common stock, par value $0.01 per share
- Symbol
- ATAI on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 99,158,600
- Total 13F value
- $350,989,719
- Portfolio coverage rank
- 0%
- Share change
- +78,693,277
- Value change
- +$276,409,077
- Number of holders
- 175
- Shares outstanding
- 368,909,961
- SEC-reported price per share
- $5.27
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ATAI - AtaiBeckley Inc. - Common stock, par value $0.01 per share is tracked under CUSIP 04650F101.
- 175 institutions reported positions in Q1 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 175 to 51 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $350,989,719 to $9,031,764.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 175 institutions filings for Q1 2026.
Security key
04650F101
Latest holder period
Q1 2026
13F holders
175
13D/G owners
1
CIK / CUSIP context first
Open Q1 2026 holders
ATAI full holder history
AtaiBeckley Inc. SEC filings
AtaiBeckley Inc. company facts
AtaiBeckley Inc. insider transactions
AtaiBeckley Inc. 13D/G history
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 04650F101:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
ATAI
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Apeiron Investment Group Ltd. | 15% | $299,399,946 | 56,812,134 | Christian Angermayer | 15 Jul 2026 |
As of 31 Mar 2026, 175 institutional investors reported holding 99,158,600 shares of AtaiBeckley Inc. - Common stock, par value $0.01 per share (ATAI). This represents 27% of the company’s total 368,909,961 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
23%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Deep Track Capital, LP | 3.3% | 12,000,000 | 0.88% | $42,480,000 | |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.2% | 11,761,398 | 0% | 0% | $41,635,349 |
| UBS Group AG | 2% | 7,426,867 | 0% | $26,291,109 | |
| BlackRock, Inc. | 1.9% | 6,835,300 | 0% | $24,196,962 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 1.5% | 5,642,758 | 0.03% | $19,975,363 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.4% | 5,286,326 | 0.02% | $18,713,594 | |
| MILLENNIUM MANAGEMENT LLC | 1.2% | 4,364,096 | 0.01% | $15,448,900 | |
| MORGAN STANLEY | 1% | 3,852,772 | 0% | $13,638,814 | |
| Candriam S.C.A. | 0.84% | 3,086,379 | 0.06% | $10,925,782 | |
| Qube Research & Technologies Ltd | 0.78% | 2,891,942 | 0.01% | $10,237,475 | |
| Foresite Capital Management VI LLC | 0.75% | 2,750,000 | 2.1% | $9,735,000 | |
| GEODE CAPITAL MANAGEMENT, LLC | 0.68% | 2,509,974 | 0% | $8,889,101 | |
| MARSHALL WACE, LLP | 0.64% | 2,364,446 | -12% | 0.01% | $8,370,139 |
| RTW INVESTMENTS, LP | 0.54% | 2,000,000 | 0.07% | $7,080,000 | |
| TWO SIGMA INVESTMENTS, LP | 0.54% | 1,975,552 | 0.01% | $6,993,454 | |
| Newtyn Management, LLC | 0.48% | 1,781,703 | 0.67% | $6,307,229 | |
| Eagle Health Investments LP | 0.46% | 1,709,359 | 1.3% | $6,051,131 | |
| VANGUARD FIDUCIARY TRUST CO | 0.34% | 1,256,731 | 0% | 0% | $4,448,828 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.32% | 1,181,583 | 0% | $4,182,804 | |
| STATE STREET CORP | 0.31% | 1,144,355 | 0% | $4,051,017 | |
| MOORE CAPITAL MANAGEMENT, LP | 0.26% | 952,380 | 0.12% | $3,371,425 | |
| ADAR1 Capital Management, LLC | 0.25% | 913,242 | 0.2% | $3,232,877 | |
| BANK OF AMERICA CORP /DE/ | 0.22% | 819,664 | 0% | $2,901,610 | |
| CenterBook Partners LP | 0.19% | 707,369 | 0.13% | $2,504,086 | |
| Point72 Asset Management, L.P. | 0.18% | 664,724 | 0% | $2,353,123 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
3
Latest
Q1 2026
Rows shown
1-3 of 3