Security key
N0731H103
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 1,127,150
- Total 13F value
- $4,003,215
- Share change
- -47,253,259
- SEC-reported price per share
- $3.54
- Number of holders
- 6
- Value change
- -$193,255,582
- Number of sells
- 112
- Shares outstanding
- 367,559,971
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
6
Top holders
6
ATAI full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
AtaiBeckley Inc. SEC filings
AtaiBeckley Inc. company facts
AtaiBeckley Inc. 13D/G history
Broader feeds
Reporting periods
Holder history for CUSIP N0731H103
Recent filing periods:
Ownership snapshot
Top reported holders of ATAI - ATAIBECKLEY INC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Cosmo Feilding-Mellen
Disclosed value leader
Cosmo Feilding-Mellen
Comparable rows
0/15
Latest evidence
02 Jan 2026
3/4/5
13F
Highest disclosed value: $29,879,581
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
Cosmo Feilding-Mellen has the largest disclosed position value at $29.88M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Cosmo Feilding-Mellen's linked filing trail.
Disclosed position value
Top 5
Cosmo Feilding-Mellen
$29.88M
ADAGE CAPITAL PARTNERS GP, L.L.C.
$28.96M
MORGAN STANLEY
$19.72M
Deep Track Capital, LP
$19.13M
BlackRock, Inc.
$11.51M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Cosmo Feilding-Mellen |
3/4/5
Director
|
—
denominator unverified
|
$29,879,581
7,663,396 shares
|
-$154,377 | 02 Jan 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
Company
|
—
denominator unverified
|
$28,956,570
7,079,846 shares
|
— | 31 Dec 2025 |
| MORGAN STANLEY |
13F
Company
|
—
denominator unverified
|
$19,717,783
4,820,973 shares
|
— | 31 Dec 2025 |
| Deep Track Capital, LP |
13F
Company
|
—
denominator unverified
|
$19,130,112
4,677,289 shares
|
— | 31 Dec 2025 |
| BlackRock, Inc. |
13F
Company
|
—
denominator unverified
|
$11,506,021
2,813,208 shares
|
— | 31 Dec 2025 |
| Foresite Capital Management VI LLC |
13F
Company
|
—
denominator unverified
|
$11,247,500
2,750,000 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
6
Shares
1,127,150
Rows available
6
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q1 2026 Across Filers
Q1 2026 holders
6
Q1 2026 holders
6
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend