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ATAI

AtaiBeckley Inc.
$5.17 -0.16 (-3.00%) At close · Jul 10
Market Cap
$1.90B
Shares
368,166,674

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 183
Total Value: $354,948,219
Total Shares: 100,161,806
Showing 1–100 of 189 holdings by value · page 1 of 2

Institutional Ownership Trend

3 quarters

Superinvestors Holding ATAI

All superinvestors →
Ruane Cunniff $149,076

Holder Concentration

Across 180 13F filers
Top Holder
12.0%
Dec 2025 → Mar 2026 · range 12.0% – 46.2%
of institutional value
Top 5
44.0%
Dec 2025 → Mar 2026 · range 44.0% – 97.5%
of institutional value
Top 10
63.9%
Dec 2025 → Mar 2026 · range 63.9% – 99.5%
of institutional value
HHI
549
Dec 2025 → Mar 2026 · range 549 – 3,625
Broadly held
Showing 100 of 189
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid Deep Track Capital, LP $42,480,000 11.97% 12,000,000
Mega VANGUARD CAPITAL MANAGEMENT LLC $41,635,348 11.73% 11,761,398
Mega UBS Group AG $26,291,108 7.41% 7,426,867
Mega BlackRock, Inc. $24,196,958 6.82% 6,835,300
Large ADAGE CAPITAL PARTNERS GP, L.L.C. $19,975,363 5.63% 5,642,758
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $18,713,594 5.27% 5,286,326
Mega MILLENNIUM MANAGEMENT LLC $15,448,899 4.35% 4,364,096
Mega MORGAN STANLEY $13,638,809 3.84% 3,852,772
Large Candriam S.C.A. $10,925,781 3.08% 3,086,379
Large Qube Research & Technologies Ltd $10,237,474 2.88% 2,891,942
Small Foresite Capital Management VI LLC $9,735,000 2.74% 2,750,000
Mega GEODE CAPITAL MANAGEMENT, LLC $8,885,307 2.50% 2,509,974
Large MARSHALL WACE, LLP $8,370,137 2.36% 2,364,446
Large RTW INVESTMENTS, LP $7,080,000 1.99% 2,000,000
Mega TWO SIGMA INVESTMENTS, LP $6,993,454 1.97% 1,975,552
Small Newtyn Management, LLC $6,307,228 1.78% 1,781,703
Small Eagle Health Investments LP $6,051,130 1.70% 1,709,359
Mega VANGUARD FIDUCIARY TRUST CO Bank $4,448,827 1.25% 1,256,731
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $4,182,803 1.18% 1,181,583
Mega STATE STREET CORP $4,051,016 1.14% 1,144,355
Mid MOORE CAPITAL MANAGEMENT, LP $3,371,425 0.95% 952,380
Mid ADAR1 Capital Management, LLC $3,232,876 0.91% 913,242
Mega BANK OF AMERICA CORP /DE/ Bank $2,901,609 0.82% 819,664
Mid CenterBook Partners LP $2,504,086 0.71% 707,369
Large Point72 Asset Management, L.P. $2,353,122 0.66% 664,724
Large Woodline Partners LP $2,124,000 0.60% 600,000
Small AdvisorShares Investments LLC $2,009,257 0.57% 567,587
Mid Amova Asset Management Americas, Inc. $2,009,219 0.57% 567,576
Mega Sumitomo Mitsui Trust Group, Inc. $2,009,219 0.57% 567,576
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,937,088 0.55% 547,200
Large Man Group plc $1,924,043 0.54% 543,515
Mega NORTHERN TRUST CORP Bank $1,904,696 0.54% 538,050
Mega GOLDMAN SACHS GROUP INC $1,844,002 0.52% 520,905
Large Squarepoint Ops LLC $1,662,713 0.47% 469,693
Mid OP Asset Management Ltd $1,499,805 0.42% 423,674
Mid ORBIMED ADVISORS LLC $1,228,380 0.35% 347,000
Mega Swiss National Bank Bank $1,153,686 0.33% 325,900
Micro AXON CAPITAL LP $1,082,539 0.30% 305,802
Small Boussard & Gavaudan Investment Management LLP $1,045,234 0.29% 295,264
Large Jefferies Financial Group Inc. $976,686 0.28% 275,900
Micro Brummer Multi-Strategy AB $974,947 0.27% 275,409
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $941,640 0.27% 266,000
Mega CITADEL ADVISORS LLC $924,648 0.26% 261,200
Small STABLEFORD CAPITAL II LLC $887,204 0.25% 168,350
Large Jain Global LLC $864,421 0.24% 244,187
Mid Brevan Howard Capital Management LP $838,774 0.24% 236,942
Micro Verdad Advisers, LP $805,951 0.23% 227,670
Small Catalio Capital Management, LP $696,877 0.20% 196,858
Mega JPMORGAN CHASE & CO $681,498 0.19% 192,514
Large Hudson Bay Capital Management LP $667,236 0.19% 188,485
Mid IQ EQ FUND MANAGEMENT (IRELAND) Ltd $665,636 0.19% 188,033
Mid Burkehill Global Management, LP $654,900 0.18% 185,000
Mid BIT Capital GmbH $646,319 0.18% 182,576
Large Rockefeller Capital Management L.P. $633,660 0.18% 179,000
Mega Nuveen, LLC $627,015 0.18% 177,123
Mega CITADEL ADVISORS LLC $606,713 0.17% 171,388
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $589,764 0.17% 166,600
Mid Shay Capital LLC $581,062 0.16% 164,142
Small Carrera Capital Advisors $486,962 0.14% 137,560
Small Warm Springs Advisors Inc. $482,856 0.14% 136,400
Small Catalyst Funds Management Pty Ltd $401,436 0.11% 113,400
Mega VANGUARD ASSET MANAGEMENT, Ltd $391,141 0.11% 110,492
Mega CITADEL ADVISORS LLC $375,594 0.11% 106,100
Mega Legal & General Group Plc $373,951 0.11% 105,636
Large STATE OF WISCONSIN INVESTMENT BOARD $366,244 0.10% 103,459
Mega JANE STREET GROUP, LLC $339,132 0.10% 95,800
Mega Vanguard Global Advisers, LLC $313,038 0.09% 88,429
Large NOMURA HOLDINGS INC $297,006 0.08% 83,900
Mega GOLDMAN SACHS GROUP INC $283,200 0.08% 80,000
Mega JANUS HENDERSON GROUP PLC $281,076 0.08% 79,400
Large Schonfeld Strategic Advisors LLC $274,742 0.08% 77,611
Mid China Universal Asset Management Co., Ltd. $266,402 0.08% 75,255
Mid WINTON GROUP Ltd $227,976 0.06% 64,400
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $226,914 0.06% 64,100
Small Virtus Investment Advisers, LLC $225,013 0.06% 63,563
Micro Fore Capital, LLC $212,400 0.06% 60,000
Large Quantinno Capital Management LP $206,190 0.06% 58,246
Large State of New Jersey Common Pension Fund D Pension $199,985 0.06% 56,493
Mega Invesco Ltd. $188,323 0.05% 53,199
Mid Caprock Group, LLC $184,345 0.05% 52,075
Small MYDA Advisors LLC $177,000 0.05% 50,000
Small Trueblood Wealth Management, LLC $177,000 0.05% 50,000
Small SEAVIEW INVESTMENT MANAGERS LLC $176,723 0.05% 49,922
Small VectorGlobal IAG, Inc. $176,723 0.05% 49,922
Mega CITIGROUP INC $173,644 0.05% 49,052
Large Zurcher Kantonalbank (Zurich Cantonalbank) Bank $164,167 0.05% 46,375
Mid Jump Financial, LLC $162,932 0.05% 46,026
Mega Bank of New York Mellon Corp Bank $161,455 0.05% 45,609
Large ARIZONA STATE RETIREMENT SYSTEM Pension $160,730 0.05% 45,404
Mega AMERIPRISE FINANCIAL INC $160,386 0.05% 45,307
Large Vanguard Investments Australia, Ltd. $152,542 0.04% 43,091
Mid Ruane, Cunniff & Goldfarb L.P. $149,076 0.04% 42,112
Mega BARCLAYS PLC $135,291 0.04% 38,218
Large HighTower Advisors, LLC $135,008 0.04% 38,138
Mid Wedmont Private Capital $131,750 0.04% 25,000
Small THOROUGHBRED FINANCIAL SERVICES, LLC $119,722 0.03% 33,820
Small DLD Asset Management, LP $118,944 0.03% 33,600
Mega Amundi $117,248 0.03% 33,121
Large Cresset Asset Management, LLC $110,855 0.03% 31,315
Mid KINGSWOOD WEALTH ADVISORS, LLC $106,224 0.03% 30,007
Key facts CIK 2081043 CUSIP 04650F101 13F (30d) 9 filings 9 filers Visit website Investor relations

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