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ADAGE CAPITAL PARTNERS GP, L.L.C.

Position in ATAI — AtaiBeckley Inc.

CIK 1165408 Boston, MA

Position in ATAI

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$29,737,334
+$9,761,971 QoQ
Shares Held
5,642,758
0.0% QoQ
Ownership
1.52%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
#6
of 237 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ATAI Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

ADAGE CAPITAL PARTNERS GP, L.L.C. holds $4,240,035,723 across 126 Biotechnology names. ATAI ranks #39 (0.7% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ATAI

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2 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $29,737,334 5,642,758
2026-03-31 $19,975,363 5,642,758