ATAI Life Sciences BV (ATAI) Ownership

2.06 ↑0.04 (1.98%)

As of December 31, 1969, 7:00pm EST.

Institutions
Mutual Funds

Institutional Ownership

ARK Investment Management LLC is the biggest individual institutional holder of ATAI Life Sciences BV (ATAI), owning a total of 5.7 million shares. Combined, the top 61 institutional holders of ATAI own 19.49% of the company with a total of 34.6 million shares.

In the latest ownership report on March 31st 2025, the top 61 institutional holders increased their combined ownership of ATAI by 376 thousand shares. 3 institutions bought 692,053 total additional shares and increased their ownership by an average of 1,564.12%. However 4 institutions sold 315,901 total shares and decreased their ownership by an average of 14.81%.

Overall this is a positive sign as the number of shares owned by the top 20 institutional holders of ATAI Life Sciences BV increased by a net total of 376,152 in the latest quarter.

Institution Ownership Chart

Latest Institutional Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Davidson Kempner Capital Management LP	0.708%	48.882%	1,413,443	464,070	2025-03-31
Brown University	0.360%	0.000%	718,500	0	2025-03-31
AdvisorShares Investments, LLC	0.205%	31.228%	408,762	97,272	2025-03-31
Vanguard Group Inc	0.195%	-2.840%	389,183	-11,377	2025-03-31
Two Sigma Investments LLC	0.186%	-4.838%	371,965	-18,912	2025-03-31
Franklin Resources Inc	0.178%	0.000%	356,357	0	2025-03-31
BlackRock Inc	0.155%	-1.725%	309,043	-5,425	2025-03-31
Woodline Partners LP	0.141%	-49.822%	282,185	-280,187	2025-03-31
Catalio Capital Management, LP	0.099%	0.000%	196,858	0	2025-03-31
Citigroup Inc	0.067%	4,612.240%	133,545	130,711	2025-03-31

Top Institutions

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
ARK Investment Management LLC	3.411%	-7.747%	5,663,340	-475,574	2022-12-31
Morgan Stanley - Brokerage Accounts	1.667%	9.623%	3,330,540	292,374	2024-12-31
Walleye Trading Advisors, LLC	1.350%	-18.020%	2,264,912	-497,848	2024-09-30
Falcon Edge Capital LP	1.287%	0.000%	2,134,625	0	2022-09-30
UBS Group AG	0.971%	7,249.000%	1,939,108	1,912,722	2024-12-31
Suvretta Capital Management, LLC	0.987%	33.656%	1,637,960	412,459	2022-12-31
Davidson Kempner Capital Management LP	0.708%	48.882%	1,413,443	464,070	2025-03-31
Rubric Capital Management LP	0.795%	0.000%	1,319,137	0	2022-12-31
Millennium Management LLC	0.491%	122.209%	981,557	539,830	2024-12-31
Newtyn Management LLC	0.578%	60.000%	960,000	360,000	2023-03-31
Marshall Wace Asset Management Ltd	0.473%	2.314%	793,839	17,950	2024-03-31
PURA VIDA INVESTMENTS, LLC	0.435%	0.000%	721,824	0	2022-09-30
Brown University	0.360%	0.000%	718,500	0	2025-03-31
ROUND TABLE SERVICES, LLC	0.424%	0.000%	704,000	0	2022-09-30
Mirae Asset Global Investments (Korea) Co Ltd	0.373%	-1.272%	623,677	-8,033	2023-12-31
Renaissance Technologies Corp	0.345%	0.000%	573,100	573,100	2023-03-31
Pale Fire Capital SE	0.249%	1,230.520%	497,402	460,018	2024-12-31
Schonfeld Strategic Advisors LLC	0.284%	448.953%	472,100	386,100	2022-12-31
Citadel Advisors Llc	0.209%	0.000%	416,772	416,772	2024-12-31
AdvisorShares Investments, LLC	0.205%	31.228%	408,762	97,272	2025-03-31
Vanguard Group Inc	0.195%	-2.840%	389,183	-11,377	2025-03-31
Two Sigma Investments LLC	0.186%	-4.838%	371,965	-18,912	2025-03-31
Franklin Resources Inc	0.178%	0.000%	356,357	0	2025-03-31
JPMorgan Chase & Co	0.190%	127.349%	318,014	178,135	2023-12-31
Cresset Asset Management, LLC	0.186%	0.000%	311,613	0	2023-12-31
Highline Capital Management LLC	0.187%	0.000%	309,680	0	2022-09-30
BlackRock Inc	0.155%	-1.725%	309,043	-5,425	2025-03-31
Susquehanna International Group, LLP	0.154%	2,204.300%	307,325	293,988	2024-12-31
Bank of America Corp	0.144%	8.637%	287,477	22,855	2024-12-31
Woodline Partners LP	0.141%	-49.822%	282,185	-280,187	2025-03-31
Swiss National Bank	0.162%	0.000%	268,600	0	2023-09-30
Tejara Capital Ltd	0.155%	-10.337%	260,215	-30,000	2024-03-31
Cubist Systematic Strategies, LLC	0.146%	135.559%	242,850	139,755	2022-12-31
Catalio Capital Management, LP	0.099%	0.000%	196,858	0	2025-03-31
Rafferty Asset Management, LLC	0.104%	-1.213%	171,740	-2,108	2023-09-30
Goldman Sachs Group Inc	0.086%	5.423%	171,592	8,827	2024-12-31
Hyperion Capital Advisors LP	0.084%	0.000%	168,416	0	2024-12-31
Two Sigma Advisers, LLC	0.101%	-63.579%	168,300	-293,800	2023-06-30
Barclays PLC	0.083%	-33.089%	164,969	-81,581	2024-12-31
JANE STREET GROUP, LLC	0.095%	710.982%	158,320	138,798	2023-12-31
Bank of Montreal	0.084%	0.000%	140,692	140,692	2024-03-31
BMO Capital Markets Corp.	0.084%	0.000%	140,692	140,692	2024-03-31
XTX Topco Ltd	0.070%	0.000%	140,544	140,544	2024-12-31
Citigroup Inc	0.067%	4,612.240%	133,545	130,711	2025-03-31
HRT FINANCIAL LLC	0.078%	0.000%	130,849	130,849	2023-12-31
Qube Research & Technologies	0.077%	370.846%	128,494	101,204	2023-12-31
Jane Street Group LLC	0.060%	0.000%	100,626	100,626	2024-12-31
Virtu Financial LLC	0.059%	0.000%	98,595	98,595	2024-12-31
Geode Capital Management, LLC	0.055%	-20.991%	92,619	-24,607	2024-09-30
State Street Corp	0.049%	1.059%	81,918	858	2024-09-30
Credit Suisse First Boston (CSFB)	0.049%	58.545%	81,484	30,089	2024-03-31
State Street Corporation	0.048%	-6.911%	81,060	-6,018	2024-03-31
QUATTRO FINANCIAL ADVISORS LLC	0.042%	0.000%	70,976	0	2024-12-31
SG Americas Securities, LLC	0.031%	2.382%	51,538	1,199	2024-12-31
Kingswood Wealth Advisors LLC	0.030%	0.000%	50,000	50,000	2024-12-31
CLAUDIA M.P. BATLLE, CRP (R) LLC	0.030%	0.000%	49,922	0	2024-06-30
Royal Bank of Canada	0.030%	-0.392%	49,529	-195	2024-09-30
CI Private Wealth LLC	0.029%	60.934%	49,085	18,585	2024-09-30
Sanctuary Advisors, LLC	0.029%	0.000%	48,660	48,660	2024-06-30
HPM Partners LLC	0.029%	-6.904%	47,965	-3,557	2024-06-30
Objectivity Squared LLC	0.027%	0.000%	45,209	0	2024-09-30

Mutual Fund Ownership

ARK Genomic Revolution is the biggest individual fund holder of ATAI Life Sciences BV (ATAI), owning a total of 5.6 million shares. Combined, the top 61 mutual fund holders of ATAI own 9.80% of the company with a total of 16.9 million shares.

In the latest ownership report on April 30th 2025, the top 61 fund holders increased their combined ownership of ATAI by 121 thousand shares. 1 funds bought 125,077 total additional shares and increased their ownership by an average of 28.48%. However 2 funds sold 4,568 total shares and decreased their ownership by an average of 0.68%.

Overall this is a positive sign as the number of shares owned by the top 20 mutual funds holding ATAI Life Sciences BV increased by a net total of 120,509 in the latest report.

Mutual Funds Chart

Latest Mutual Fund Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
BIT Biotech Opportunities S	0.282%	28.484%	564,184	125,077	2025-04-30
AdvisorShares Psychedelics ETF	0.208%	0.000%	415,762	0	2025-04-30
Vanguard Health Care ETF	0.193%	-0.949%	385,491	-3,692	2025-04-30
iShares Healthcare Innov ETF USD Acc	0.106%	-0.412%	211,514	-876	2025-04-30
iShares Ageing Population ETF USD Acc	0.040%	0.000%	79,439	0	2025-04-30
SPDR® S&P® International Small Cap ETF	0.021%	0.000%	41,294	0	2025-04-30
Avantis US Small Cap Equity ETF	0.013%	0.000%	25,773	0	2025-04-30

Top Mutual Funds

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
ARK Genomic Revolution	3.382%	-7.879%	5,614,556	-480,207	2022-12-31
ARK Genomic Revolution ETF	1.385%	-7.760%	2,297,839	-193,314	2023-02-28
iShares Biotechnology ETF	0.460%	0.000%	771,793	0	2024-11-30
SPDR® S&P Kensho New Economies Comps ETF	0.409%	-0.024%	678,462	-165	2023-11-30
MEDICAL BioHealth EUR Acc	0.396%	0.000%	656,790	0	2022-12-31
Kieger Impact Healthcare A USD Acc	0.384%	46.954%	644,100	205,800	2024-09-30
BIT Biotech Opportunities S	0.282%	28.484%	564,184	125,077	2025-04-30
Horizons Psychedelic Stock ETF	0.310%	-13.729%	520,196	-82,780	2024-02-29
Morgan Stanley Inception	0.256%	0.000%	511,994	0	2025-03-31
Morgan Stanley Inst Inception I	0.256%	0.000%	511,994	0	2025-03-31
AdvisorShares Psychedelics ETF	0.208%	0.000%	415,762	0	2025-04-30
Vanguard Health Care ETF	0.193%	-0.949%	385,491	-3,692	2025-04-30
EQ/Morgan Stanley Small Cap Growth K	0.159%	0.000%	316,732	0	2025-03-31
APO Medical Opportunities R	0.175%	0.000%	291,018	0	2022-12-31
Kairos Intl SICAV Opports L/S P	0.107%	0.000%	212,696	212,696	2024-06-30
iShares Healthcare Innov ETF USD Acc	0.106%	-0.412%	211,514	-876	2025-04-30
iShares MSCI USASmCp ESGEnh ETF USD Acc	0.117%	0.000%	194,200	0	2023-11-29
Nuveen ESG Small-Cap ETF	0.105%	0.000%	174,810	0	2023-11-30
Direxion Moonshot Innovators ETF	0.104%	0.000%	173,337	0	2023-11-30
Simplify Propel Opportunities ETF	0.084%	0.000%	140,000	0	2023-10-31
Fidelity® NASDAQ Composite Index®	0.071%	0.000%	117,226	0	2023-10-31
ALPS Medical Breakthroughs ETF	0.066%	0.000%	110,053	0	2023-05-31
iShares ESG Aware MSCI USA Small-Cap ETF	0.062%	-75.000%	102,923	-308,768	2023-11-30
iShares Nasdaq US Biotech ETF USD Acc	0.059%	0.000%	98,957	0	2024-11-30
Fidelity Nasdaq Composite Index	0.046%	0.000%	92,619	0	2025-03-31
RIM Global Bioscience EUR	0.055%	0.000%	91,013	0	2022-12-31
iShares Ageing Population ETF USD Acc	0.040%	0.000%	79,439	0	2025-04-30
WEALTHGATE Biotech Fund Inst	0.037%	30.350%	62,152	14,471	2024-06-30
Fidelity® MSCI Health Care ETF	0.037%	-0.212%	61,198	-130	2023-11-30
DYNVAL A	0.035%	0.000%	58,486	0	2022-11-30
Virtus LifeSci Biotech Clinical Trls ETF	0.034%	0.000%	56,462	0	2023-11-30
Vanguard Global Small-Cap Idx USD Acc	0.033%	0.000%	54,391	0	2023-11-30
Undrly Legal & General Global Small Cap	0.033%	0.000%	54,231	54,231	2023-05-31
Rainbow Diversified Market Opports A	0.030%	0.000%	50,000	0	2023-12-31
CSIF (CH) III Eq Wrl ex CH SmCp B Pn DB	0.026%	0.000%	42,366	0	2022-10-31
SPDR® S&P International Small Cap ETF	0.025%	0.000%	42,160	0	2024-05-30
Sygnia Itrix 4th IR Global Equity ETF	0.025%	0.000%	41,348	0	2023-09-30
SPDR® S&P® International Small Cap ETF	0.021%	0.000%	41,294	0	2025-04-30
ERSTE STOCK BIOTEC EUR R01 A	0.023%	0.109%	38,500	42	2022-09-30
NT Wld Sm Cap ESG Low Carb IdxFdrBGBPAcc	0.016%	0.000%	27,278	27,278	2023-10-31
NT Col US SM Idx Fd - NL	0.016%	-2.374%	26,691	-649	2023-09-30
NT United States IMI Fund - NL	0.016%	-2.374%	26,691	-649	2023-09-30
Avantis US Small Cap Equity ETF	0.013%	0.000%	25,773	0	2025-04-30
Goldman Sachs Absolute Ret Trckr Instl	0.011%	70.571%	21,144	8,748	2025-03-31
Sygnia 4th Industrial Revolution Gl Eq B	0.013%	64.366%	21,075	8,253	2023-06-30
Daiwa Moonshot Index Mother Fund	0.013%	0.000%	20,847	20,847	2023-07-10
China Universal NASDAQ Bio-Tch ETF(QDII)	0.010%	2.395%	19,666	460	2024-06-30
Undrly L&G Pen PMC Multi Asset	0.011%	0.000%	18,479	18,479	2023-09-30
Morgan Stanley Vitality Portfolio R6	0.007%	0.000%	14,030	0	2025-03-31
Avantis U.S. Small Cap Equity G	0.006%	0.000%	12,208	12,208	2025-03-31
Avantis U.S. Small Cap Equity Inst	0.006%	0.000%	12,208	12,208	2025-03-31
L&G Global Small Cap Eq Idx C GBP Acc	0.007%	-80.000%	10,846	-43,385	2023-12-31
ProShares Ultra Nasdaq Biotechnology	0.006%	-2.041%	9,408	-196	2024-11-29
Invesco Nasdaq Biotechnology ETF	0.004%	0.000%	7,035	0	2024-11-29
GF NASDAQ Bio-Tech Idx QDII RMB A	0.002%	0.000%	3,171	0	2024-06-30
GS Absolute Ret Trkr I Acc EUR Hdg	0.001%	0.000%	2,821	2,821	2025-02-28
PGIM Quantitative Solutions US Micro Cap	0.001%	0.000%	1,400	1,400	2025-03-31
Blackstone Alternative Multi-Strategy I	0.001%	0.000%	1,100	0	2024-12-31
Morgan Stanley Cntrpnt Global R6	0.000%	0.000%	852	0	2024-06-30
MS INVF Counterpoint Global Z	0.000%	0.000%	593	0	2024-06-30
Nationwide Multi-Cap Portfolio R6	0.000%	0.000%	591	0	2024-05-31