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Of the 8 tracked institutions holding ATAI, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +4.0pt. It's a gauge of who owns the name, not just how many.
Among the 8 tracked institutional investors we monitor, ATAI (ATAIBECKLEY INC) is held with a combined value of $235.99M across 44,779,726 shares. The largest holder is BlackRock, Inc. with a position worth $134.78M. 2 funds opened new positions in the most recent quarter. 4 funds increased their holdings. 1 fund reduced its position.
Total Institutional Value
$235.99M
Total Shares Held
44,779,726
Institutional Holders
8
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $134.78M | 0.00% | +274.2% |
| 2 | STATE STREET CORP | $43.67M | 0.00% | +624.2% |
| 3 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $29.74M | 0.04% | - |
| 4 | CITADEL ADVISORS LLC | $11.15M | 0.01% | +1134.0% |
| 5 | MILLENNIUM MANAGEMENT LLC | $9.33M | 0.01% | -59.4% |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $7.12M | 0.00% | New |
| 7 | AQR CAPITAL MANAGEMENT LLC | $182.73K | 0.00% | +213.2% |
| 8 | FMR LLC | $23.73K | 0.00% | New |
SEC Schedule 13D (activist) and 13G (passive) filings for ATAI. Filed when an investor acquires 5%+ ownership.
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of ATAI with a position worth $134.78M, representing 0.00% of their portfolio. In total, 8 institutional investors hold ATAI with a combined value of $235.99M.
In the most recent quarter, 2 funds opened a new position in ATAI. Additionally, 4 increased their holdings and 1 reduced their positions.
Institutional investors hold $235.99M worth of ATAI stock across 8 positions. The largest institutional holder is BlackRock, Inc. with $134.78M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ATAI, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ATAI positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$7.28
2026-09-08
YTD
+88.1%
96% of 52-week range
