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Institutional Holdings
ARTVOwnership Summary
Institutions Holding
78
Total Shares Held
39,671,906
Total Value Held
$384,596,599
Quarter
2026-06-30
Active Positions
Increased Positions
22
24,817,993 shares
Decreased Positions
2
80,787 shares
Held Positions
6
2,892,823 shares
New Positions
40
11,880,303 shares
Sold Out Positions
8
904,173 shares
| Institution | Shares | Value | Change | % of Portfolio | Reported |
|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 17,955,642 | $174,169,727 | ▲ +8,102,340 | 1.51% | 2026-06-30 |
| VIKING GLOBAL INVESTORS LP | 2,604,166 | $25,260,410 | New position | 0.07% | 2026-06-30 |
| Blackstone Inc. | 2,403,437 | $23,313,339 | New position | 0.07% | 2026-06-30 |
| 5AM Venture Management, LLC | 2,353,304 | $22,827,049 | Unchanged | 7.93% | 2026-06-30 |
| Venrock Adviser, LLC | 2,043,596 | $19,822,881 | ▲ +434,027 | 0.60% | 2026-06-30 |
| FRANKLIN RESOURCES INC | 1,997,223 | $19,373,063 | ▲ +1,476,896 | 0.00% | 2026-06-30 |
| Caligan Partners LP | 1,736,111 | $16,840,277 | New position | 0.79% | 2026-06-30 |
| VANGUARD CAPITAL MANAGEMENT LLC | 981,815 | $9,523,606 | New position | 0.00% | 2026-06-30 |
| SAMSARA BIOCAPITAL, LLC | 954,861 | $9,262,152 | New position | 0.76% | 2026-06-30 |
| Blue Owl Capital Holdings LP | 874,542 | $8,483,057 | New position | 1.28% | 2026-06-30 |
| BlackRock, Inc. | 694,726 | $6,738,842 | ▲ +481,338 | 0.00% | 2026-06-30 |
| CITADEL ADVISORS LLC | 609,376 | $5,910,947 | ▲ +593,506 | 0.00% | 2026-06-30 |
| SILVERARC CAPITAL MANAGEMENT, LLC | 525,000 | $5,092,500 | New position | 0.53% | 2026-06-30 |
| GEODE CAPITAL MANAGEMENT, LLC | 353,845 | $3,433,947 | ▲ +252,150 | 0.00% | 2026-06-30 |
| BOOTHBAY FUND MANAGEMENT, LLC | 314,375 | $3,049,438 | New position | 0.04% | 2026-06-30 |
| Nantahala Capital Management, LLC | 300,000 | $2,910,000 | New position | 0.10% | 2026-06-30 |
| Revelation Capital Management, LLC | 299,311 | $2,903,317 | Unchanged | 2.65% | 2026-06-30 |
| Alyeska Investment Group, L.P. | 273,615 | $2,654,066 | ▲ +173,615 | 0.01% | 2026-06-30 |
| ACUTA CAPITAL PARTNERS, LLC | 260,416 | $2,526,035 | New position | 1.76% | 2026-06-30 |
| KVP Capital Advisors, LP | 200,000 | $1,940,000 | New position | 1.42% | 2026-06-30 |
| WELLINGTON MANAGEMENT GROUP LLP | 194,108 | $1,882,848 | Unchanged | 0.00% | 2026-06-30 |
| UBS Group AG | 184,020 | $1,784,994 | ▲ +182,493 | 0.00% | 2026-06-30 |
| SEVEN GRAND MANAGERS, LLC | 175,000 | $1,697,500 | New position | 0.07% | 2026-06-30 |
| STATE STREET CORP | 165,764 | $1,607,911 | ▲ +129,940 | 0.00% | 2026-06-30 |
| RENAISSANCE TECHNOLOGIES LLC | 151,000 | $1,464,700 | ▲ +70,962 | 0.00% | 2026-06-30 |
| VANGUARD FIDUCIARY TRUST CO | 148,393 | $1,439,412 | New position | 0.00% | 2026-06-30 |
| ADAR1 Capital Management, LLC | 118,624 | $1,150,653 | New position | 0.05% | 2026-06-30 |
| Simplify Asset Management Inc. | 101,355 | $983,144 | ▲ +78,125 | 0.01% | 2026-06-30 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 85,000 | $824,500 | ▲ +50,000 | 0.01% | 2026-06-30 |
| TWO SIGMA INVESTMENTS, LP | 78,575 | $762,178 | ▼ -36,466 | 0.00% | 2026-06-30 |
| NORTHERN TRUST CORP | 76,423 | $741,303 | ▲ +64,215 | 0.00% | 2026-06-30 |
| DAFNA Capital Management LLC | 67,101 | $650,880 | New position | 0.12% | 2026-06-30 |
| Quadrature Capital Ltd | 49,345 | $478,647 | New position | 0.00% | 2026-06-30 |
| DIMENSIONAL FUND ADVISORS LP | 44,815 | $434,705 | ▲ +24,445 | 0.00% | 2026-06-30 |
| XTX Topco Ltd | 42,509 | $412,337 | ▲ +22,239 | 0.01% | 2026-06-30 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31,113 | $301,796 | New position | 0.00% | 2026-06-30 |
| Velan Capital Investment Management LP | 25,000 | $242,500 | Unchanged | 0.15% | 2026-06-30 |
| Atom Investors LP | 22,854 | $221,684 | New position | 0.02% | 2026-06-30 |
| BAILARD, INC. | 20,700 | $200,790 | Unchanged | 0.00% | 2026-06-30 |
| Spark Investment Management LLC | 16,500 | $160,050 | New position | 0.31% | 2026-06-30 |
| GOLDMAN SACHS GROUP INC | 15,780 | $153,066 | ▲ +4,315 | 0.00% | 2026-06-30 |
| Squarepoint Ops LLC | 14,855 | $144,094 | New position | 0.00% | 2026-06-30 |
| ALLIANCEBERNSTEIN L.P. | 13,980 | $135,606 | New position | 0.00% | 2026-06-30 |
| Vanguard Global Advisers, LLC | 11,978 | $116,187 | New position | 0.00% | 2026-06-30 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 11,896 | $115,391 | New position | 0.00% | 2026-06-30 |
| Russell Investments Group, Ltd. | 5,861 | $56,852 | ▲ +370 | 0.00% | 2026-06-30 |
| WELLS FARGO & COMPANY/MN | 5,480 | $53,156 | ▲ +3,980 | 0.00% | 2026-06-30 |
| State of Wyoming | 4,588 | $44,504 | New position | 0.00% | 2026-06-30 |
| JPMORGAN CHASE & CO | 4,191 | $40,149 | ▲ +3,968 | 0.00% | 2026-06-30 |
| FMR LLC | 3,558 | $34,513 | ▲ +29 | 0.00% | 2026-06-30 |
| BARCLAYS PLC | 3,336 | $32,359 | New position | 0.00% | 2026-06-30 |
| ROYAL BANK OF CANADA | 3,066 | $30,000 | ▲ +2,878 | 0.00% | 2026-06-30 |
| RHUMBLINE ADVISERS | 3,039 | $29,474 | New position | 0.00% | 2026-06-30 |
| MORGAN STANLEY | 2,212 | $21,457 | ▼ -14,165 | 0.00% | 2026-06-30 |
| CITIGROUP INC | 2,143 | $20,788 | New position | 0.00% | 2026-06-30 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 2,136 | $20,719 | New position | 0.00% | 2026-06-30 |
| Federation des caisses Desjardins du Quebec | 2,000 | $19,400 | New position | 0.00% | 2026-06-30 |
| China Universal Asset Management Co., Ltd. | 1,600 | $15,520 | New position | 0.00% | 2026-06-30 |
| BNP PARIBAS FINANCIAL MARKETS | 1,148 | $11,136 | ▲ +606 | 0.00% | 2026-06-30 |
| Legal & General Group Plc | 566 | $5,490 | New position | 0.00% | 2026-06-30 |
| Steward Partners Investment Advisory, LLC | 500 | $4,850 | New position | 0.00% | 2026-06-30 |
| Ameritas Investment Partners, Inc. | 421 | $4,084 | New position | 0.00% | 2026-06-30 |
| MARK SHEPTOFF FINANCIAL PLANNING, LLC | 400 | $3,880 | Unchanged | 0.00% | 2026-06-30 |
| Tower Research Capital LLC (TRC) | 247 | $2,396 | New position | 0.00% | 2026-06-30 |
| US BANCORP DE U.S. BANCORP | 235 | $2,280 | New position | 0.00% | 2026-06-30 |
| Quarry LP | 94 | $912 | New position | 0.00% | 2026-06-30 |
| Sterling Capital Management LLC | 72 | $698 | New position | 0.00% | 2026-06-30 |
| ACADIAN ASSET MANAGEMENT LLC | 22,940 | $221 | New position | 0.00% | 2026-06-30 |
| Caitong International Asset Management Co., Ltd | 13 | $126 | New position | 0.00% | 2026-06-30 |
| JONES FINANCIAL COMPANIES LLLP | 11 | $106 | New position | 0.00% | 2026-06-30 |
| venBio Partners LLC | 0 | $0 | Sold out | 2026-06-30 | |
| Propel Bio Management, LLC | 0 | $0 | Sold out | 2026-06-30 | |
| MILLENNIUM MANAGEMENT LLC | 0 | $0 | Sold out | 2026-06-30 | |
| JANE STREET GROUP, LLC | 0 | $0 | Sold out | 2026-06-30 | |
| PANAGORA ASSET MANAGEMENT INC | 0 | $0 | Sold out | 2026-06-30 | |
| Sanctuary Advisors, LLC | 0 | $0 | Sold out | 2026-06-30 | |
| OMERS ADMINISTRATION Corp | 0 | $0 | Sold out | 2026-06-30 | |
| OSAIC HOLDINGS, INC. | 0 | $0 | Sold out | 2026-06-30 |