New Positions
20 managers initiated
Top five by reported value
- ARK Investment Management LLC$13.5M
- MARSHALL WACE, LLP$10.9M
- Nikko Asset Management Americas, Inc.$1.9M
- FreeGulliver LLC$255.6K
- Quadrature Capital Ltd$195.7K
AtaiBeckley Inc NASDAQ NMS - GLOBAL MARKET:ATAI
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31.
20 new0 added0 reduced0 exited
Total Institutional Holders
20
as of 2025-12-31
Top Holder
ARK Investment Management LLC
$13.5M
Largest QoQ Increase
ARK Investment Management LLC
+3,305,997 sh
Largest QoQ Decrease
—
New Positions(20)
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| ARK Investment Management LLC | 3,305,997 | $13.5M | +3,305,997 | — |
| MARSHALL WACE, LLP | 2,675,117 | $10.9M | +2,675,117 | — |
| Nikko Asset Management Americas, Inc. | 461,436 | $1.9M | +461,436 | — |
| FreeGulliver LLC | 62,500 | $255.6K | +62,500 | — |
| Quadrature Capital Ltd | 47,848 | $195.7K | +47,848 | — |
| Strategic Blueprint, LLC | 23,500 | $96.1K | +23,500 | — |
| North Star Investment Management Corp. | 15,675 | $64.1K | +15,675 | — |
| Gould Capital, LLC | 10,000 | $40.9K | +10,000 | — |
| Williams Jones Wealth Management, LLC. | 10,000 | $40.9K | +10,000 | — |
| GF FUND MANAGEMENT CO. LTD. | 7,137 | $29.2K | +7,137 | — |
| ANTIPODES PARTNERS Ltd | 7,081 | $29.0K | +7,081 | — |
| Principia Wealth Advisory, LLC | 2,000 | $8.2K | +2,000 | — |
| SBI Securities Co., Ltd. | 1,738 | $7.1K | +1,738 | — |
| Westside Investment Management, Inc. | 1,000 | $3.9K | +1,000 | — |
| CALDWELL SUTTER CAPITAL, INC. | 700 | $2.9K | +700 | — |
| HOLLENCREST CAPITAL MANAGEMENT | 600 | $2.5K | +600 | — |
| PRICE T ROWE ASSOCIATES INC /MD/ | 465,352 | $1.9K | +465,352 | — |
| ROTHSCHILD INVESTMENT LLC | 50 | $205 | +50 | — |
| THOROUGHBRED FINANCIAL SERVICES, LLC | 47,214 | $193 | +47,214 | — |
| T. Rowe Price Investment Management, Inc. | 3,684 | $16 | +3,684 | — |
New & Closed Positions this quarter
Closed Positions
0 managers exited
Top five by prior-quarter value
No managers exited their positions this quarter.
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for ATAI against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.