UPB
Upstream Bio, Inc.Company with tickers: UPB
CIK
2022626
CUSIP
91678A107
Shares Outstanding
54,419,986
Price
Holdings
Short Volume
Short Interest
Fails to Deliver
SEC Filings
Earnings Calls
Insider Trading
Congress Trades
Report Date:
Holders: 133
Total Value: $1,324,396,363
Total Shares: 48,780,716
Showing top 100 of 133 holders by value
| Holder | Value (USD) | Shares | Type | Discretion | Filed | Action |
|---|---|---|---|---|---|---|
| FMR LLC | $204,119,182 | 7,518,202 | Shares | Defined | 2026-02-17 | View |
| ORBIMED ADVISORS LLC | $154,580,941 | 5,693,589 | Shares | Sole | 2026-02-17 | View |
| BlackRock, Inc. | $90,803,279 | 3,344,504 | Shares | Sole | 2026-02-12 | View |
| Decheng Capital LLC | $85,334,567 | 3,143,078 | Shares | Sole | 2026-02-12 | View |
| NORGES BANK | $78,263,866 | 2,882,647 | Shares | Sole | 2026-02-10 | View |
| Enavate Sciences GP, LLC | $66,780,936 | 2,459,703 | Shares | Sole | 2026-02-17 | View |
| UBS Group AG | $49,039,496 | 1,806,243 | Shares | Defined | 2026-01-29 | View |
| JANUS HENDERSON GROUP PLC | $41,484,059 | 1,527,958 | Shares | Defined | 2026-02-17 | View |
| Altshuler Shaham Ltd | $36,422,811 | 1,341,540 | Shares | Defined | 2026-02-17 | View |
| Bain Capital Life Sciences Investors, LLC | $36,097,119 | 1,329,544 | Shares | Sole | 2026-02-17 | View |
| Omega Fund Management, LLC | $36,008,854 | 1,326,293 | Shares | Sole | 2026-02-17 | View |
| STATE STREET CORP | $35,816,985 | 1,319,226 | Shares | Defined | 2026-02-13 | View |
| VR Adviser, LLC | $31,746,440 | 1,169,298 | Shares | Sole | 2026-02-17 | View |
| WELLINGTON MANAGEMENT GROUP LLP | $24,292,000 | 894,733 | Shares | Defined | 2026-02-17 | View |
| GEODE CAPITAL MANAGEMENT, LLC | $23,129,301 | 851,908 | Shares | Defined | 2026-02-09 | View |
| Parkman Healthcare Partners LLC | $22,658,276 | 834,559 | Shares | Sole | 2026-02-17 | View |
| Pictet Asset Management Holding SA | $20,990,968 | 773,148 | Shares | Sole | 2026-01-29 | View |
| Woodline Partners LP | $20,640,841 | 760,252 | Shares | Sole | 2026-02-17 | View |
| Integral Health Asset Management, LLC | $20,362,500 | 750,000 | Shares | Sole | 2026-02-17 | View |
| TCG Crossover Management, LLC | $20,196,504 | 743,886 | Shares | Sole | 2026-02-17 | View |
| Samsara BioCapital, LLC | $19,983,676 | 736,047 | Shares | Sole | 2026-02-17 | View |
| Vestal Point Capital, LP | $19,548,000 | 720,000 | Shares | Sole | 2026-02-17 | View |
| Siren, L.L.C. | $15,976,417 | 588,450 | Shares | Defined | 2026-02-13 | View |
| BARCLAYS PLC | $14,240,147 | 524,499 | Shares | Sole | 2026-02-13 | View |
| MILLENNIUM MANAGEMENT LLC | $14,043,717 | 517,264 | Shares | Sole | 2026-02-17 | View |
| Nantahala Capital Management, LLC | $13,438,462 | 494,971 | Shares | Sole | 2026-02-13 | View |
| MARSHALL WACE, LLP | $9,333,925 | 343,791 | Shares | Other | 2026-02-13 | View |
| GOLDMAN SACHS GROUP INC | $9,054,009 | 333,481 | Shares | Defined | 2026-02-10 | View |
| GREAT POINT PARTNERS LLC | $8,145,000 | 300,000 | Shares | Defined | 2026-02-17 | View |
| Alyeska Investment Group, L.P. | $8,099,632 | 298,329 | Shares | Sole | 2026-02-13 | View |
| JENNISON ASSOCIATES LLC | $7,842,196 | 288,847 | Shares | Defined | 2026-01-30 | View |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $7,735,876 | 284,931 | Shares | Sole | 2026-02-13 | View |
| NORTHERN TRUST CORP | $6,429,091 | 236,799 | Shares | Other | 2026-02-17 | View |
| Squadron Capital Management LLC | $6,262,147 | 230,650 | Shares | Sole | 2026-02-17 | View |
| Invesco Ltd. | $4,430,498 | 163,186 | Shares | Defined | 2026-02-19 | View |
| Boxer Capital Management, LLC | $4,072,500 | 150,000 | Shares | Sole | 2026-02-17 | View |
| DEUTSCHE BANK AG\ | $3,470,177 | 127,815 | Shares | Defined | 2026-02-11 | View |
| SummitTX Capital, L.P. | $3,169,056 | 116,724 | Shares | Sole | 2026-02-17 | View |
| Schonfeld Strategic Advisors LLC | $3,144,160 | 115,807 | Shares | Sole | 2026-02-17 | View |
| JPMORGAN CHASE & CO | $2,994,100 | 110,280 | Shares | Defined | 2026-02-11 | View |
| AMERICAN CENTURY COMPANIES INC | $2,382,575 | 87,756 | Shares | Defined | 2026-02-13 | View |
| BANK OF AMERICA CORP /DE/ | $2,345,324 | 86,384 | Shares | Defined | 2026-02-17 | View |
| Bank of New York Mellon Corp | $2,303,757 | 84,853 | Shares | Defined | 2026-02-10 | View |
| Nuveen, LLC | $2,133,121 | 78,568 | Shares | Defined | 2026-02-12 | View |
| ExodusPoint Capital Management, LP | $2,047,164 | 75,402 | Shares | Sole | 2026-02-17 | View |
| Artia Global Partners LP | $1,863,928 | 68,653 | Shares | Sole | 2026-02-17 | View |
| Exome Asset Management LLC | $1,760,541 | 64,845 | Shares | Sole | 2026-02-13 | View |
| AMERIPRISE FINANCIAL INC | $1,535,522 | 56,557 | Shares | Defined | 2026-02-17 | View |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,516,083 | 55,841 | Shares | Other | 2026-02-17 | View |
| SEVEN GRAND MANAGERS, LLC | $1,357,500 | 50,000 | Shares | Sole | 2026-02-10 | View |
| Y-Intercept (Hong Kong) Ltd | $1,264,076 | 46,559 | Shares | Sole | 2026-02-13 | View |
| ALPS ADVISORS INC | $1,204,808 | 44,376 | Shares | Defined | 2026-02-12 | View |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,181,025 | 43,500 | Shares | Other | 2026-02-17 | View |
| RHUMBLINE ADVISERS | $1,127,349 | 41,523 | Shares | Sole | 2026-02-13 | View |
| Rafferty Asset Management, LLC | $1,050,243 | 38,683 | Shares | Sole | 2026-02-13 | View |
| WELLS FARGO & COMPANY/MN | $998,957 | 36,794 | Shares | Defined | 2026-02-13 | View |
| Trexquant Investment LP | $842,980 | 31,049 | Shares | Sole | 2026-02-17 | View |
| ALLIANCEBERNSTEIN L.P. | $841,921 | 31,010 | Shares | Defined | 2026-02-17 | View |
| AQR CAPITAL MANAGEMENT LLC | $828,153 | 30,503 | Shares | Other | 2026-02-17 | View |
| MORGAN STANLEY | $763,512 | 28,122 | Shares | Defined | 2026-02-13 | View |
| D. E. Shaw & Co., Inc. | $735,520 | 27,091 | Shares | Defined | 2026-02-17 | View |
| Swiss National Bank | $722,190 | 26,600 | Shares | Sole | 2026-02-12 | View |
| DIADEMA PARTNERS LP | $556,575 | 20,500 | Shares | Sole | 2026-02-17 | View |
| MetLife Investment Management, LLC | $534,257 | 19,678 | Shares | Defined | 2026-02-12 | View |
| PRICE T ROWE ASSOCIATES INC /MD/ | $533,117 | 19,636 | Shares | Defined | 2026-02-17 | View |
| PSP Research LLC | $478,763 | 17,634 | Shares | Sole | 2026-02-06 | View |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $474,880 | 17,491 | Shares | Defined | 2026-02-17 | View |
| PRELUDE CAPITAL MANAGEMENT, LLC | $449,604 | 16,560 | Shares | Other | 2026-02-17 | View |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $447,975 | 16,500 | Shares | Other | 2026-02-17 | View |
| RENAISSANCE TECHNOLOGIES LLC | $445,260 | 16,400 | Shares | Sole | 2026-02-12 | View |
| Quantinno Capital Management LP | $418,517 | 15,415 | Shares | Sole | 2026-02-17 | View |
| XTX Topco Ltd | $409,720 | 15,091 | Shares | Defined | 2026-02-17 | View |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $397,801 | 14,652 | Shares | Sole | 2026-02-17 | View |
| PROFUND ADVISORS LLC | $395,901 | 14,582 | Shares | Sole | 2026-02-06 | View |
| Graham Capital Management, L.P. | $372,280 | 13,712 | Shares | Sole | 2026-02-17 | View |
| Legal & General Group Plc | $372,198 | 13,709 | Shares | Defined | 2026-02-09 | View |
| CITADEL ADVISORS LLC | $364,353 | 13,420 | Shares | Defined | 2026-02-17 | View |
| DNB Asset Management AS | $347,329 | 12,793 | Shares | Other | 2026-02-05 | View |
| Virtu Financial LLC | $332,478 | 12,246 | Shares | Defined | 2026-02-23 | View |
| Verition Fund Management LLC | $326,343 | 12,020 | Shares | Sole | 2026-02-13 | View |
| Mariner, LLC | $321,184 | 11,830 | Shares | Sole | 2026-02-13 | View |
| Creative Planning | $318,985 | 11,749 | Shares | Sole | 2026-02-17 | View |
| NEW YORK STATE COMMON RETIREMENT FUND | $317,655 | 11,700 | Shares | Sole | 2026-02-12 | View |
| TWO SIGMA INVESTMENTS, LP | $285,075 | 10,500 | Shares | Sole | 2026-02-17 | View |
| INTECH INVESTMENT MANAGEMENT LLC | $282,251 | 10,396 | Shares | Sole | 2026-02-10 | View |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $275,491 | 10,147 | Shares | Defined | 2026-02-13 | View |
| CITADEL ADVISORS LLC | $271,500 | 10,000 | Shares | Defined | 2026-02-17 | View |
| Virtus Investment Advisers, Inc. | $266,097 | 9,801 | Shares | Other | 2026-02-17 | View |
| STRS OHIO | $266,070 | 9,800 | Shares | Sole | 2026-02-02 | View |
| Point72 Asset Management, L.P. | $263,355 | 9,700 | Shares | Defined | 2026-02-17 | View |
| VARCOV Co. | $261,155 | 9,619 | Shares | Sole | 2026-02-17 | View |
| Police & Firemen's Retirement System of New Jersey | $256,730 | 9,456 | Shares | Defined | 2026-02-13 | View |
| VANGUARD GROUP INC | $251,137 | 9,250 | Shares | Defined | 2026-01-29 | View |
| Persistent Asset Partners Ltd | $241,824 | 8,907 | Shares | Sole | 2026-02-17 | View |
| China Universal Asset Management Co., Ltd. | $239,082 | 8,806 | Shares | Sole | 2026-01-29 | View |
| ProShare Advisors LLC | $226,811 | 8,354 | Shares | Sole | 2026-02-06 | View |
| SEI INVESTMENTS CO | $219,562 | 8,087 | Shares | Sole | 2026-02-13 | View |
| CITIGROUP INC | $188,665 | 6,949 | Shares | Defined | 2026-02-13 | View |
| SG Americas Securities, LLC | $149,813 | 5,518 | Shares | Sole | 2026-01-09 | View |
| BNP PARIBAS ARBITRAGE, SA | $135,098 | 4,976 | Shares | Defined | 2026-02-10 | View |