Funds holding Upstream Bio Inc
ISIN US91678A1079 · United States
- Fund holders
- 150
- Of which ETFs
- 31 119 other funds
- Value held
- ≈ 106.7M $ 97.2M $ · 1.4M € · 75.3M SEK
- Share of capital
- 27.4 % of 54.8M shares on Aug 4, 2026
| Fund | Shares | Value | Weight in fund | Share of capital | |
|---|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 1,443,025 | 10M $ | 0.00 % | 2.63 % | as of Jun 30, 2026 ↗ |
| Fidelity Small Cap Growth Fund Fidelity Securities Fund | 1,371,372 | 8.7M $ | 0.10 % | 2.50 % | as of Jul 31, 2026 ↗ |
| Fidelity Stock Selector Small Cap Fund Fidelity Capital Trust | 1,321,800 | 8.3M $ | 0.11 % | 2.41 % | as of Jul 31, 2026 ↗ |
| Fidelity Series Small Cap Opportunities Fund Fidelity Securities Fund | 965,800 | 6.1M $ | 0.13 % | 1.76 % | as of Jul 31, 2026 ↗ |
| iShares Russell 2000 ETF iShares Trust | 921,063 | 6.4M $ | 0.01 % | 1.68 % | as of Jun 30, 2026 ↗ |
| SEB Läkemedelsfond SEB Funds AB | 878,473 | 75.3M SEK | 0.47 % | 1.60 % | as of Mar 31, 2026 ↗ |
| Select Health Care Portfolio Fidelity Select Portfolios | 800,000 | 6.7M $ | 0.12 % | 1.46 % | as of May 31, 2026 ↗ |
| Fidelity Small Cap Growth K6 Fund Fidelity Securities Fund | 693,618 | 4.4M $ | 0.10 % | 1.27 % | as of Jul 31, 2026 ↗ |
| Fidelity Advisor Biotechnology Fund Fidelity Advisor Series VII | 691,003 | 4.4M $ | 0.20 % | 1.26 % | as of Jul 31, 2026 ↗ |
| Fidelity Advisor Health Care Fund Fidelity Advisor Series VII | 400,000 | 2.5M $ | 0.08 % | 0.73 % | as of Jul 31, 2026 ↗ |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 386,877 | 2.7M $ | 0.00 % | 0.71 % | as of Jun 30, 2026 ↗ |
| Fidelity Small Cap Index Fund Fidelity Salem Street Trust | 384,509 | 2.4M $ | 0.01 % | 0.70 % | as of Jul 31, 2026 ↗ |
| BlackRock Health Sciences Opportunities Portfolio BlackRock Funds | 341,675 | 2.9M $ | 0.05 % | 0.62 % | as of May 29, 2026 ↗ |
| iShares Russell 2000 Value ETF iShares Trust | 338,261 | 2.3M $ | 0.02 % | 0.62 % | as of Jun 30, 2026 ↗ |
| iShares Biotechnology ETF iShares Trust | 256,130 | 1.8M $ | 0.02 % | 0.47 % | as of Jun 30, 2026 ↗ |
| Select Biotechnology Portfolio Fidelity Select Portfolios | 234,657 | 2M $ | 0.04 % | 0.43 % | as of May 31, 2026 ↗ |
| VANGUARD STRATEGIC SMALL-CAP EQUITY FUND VANGUARD HORIZON FUNDS | 234,635 | 1.6M $ | 0.05 % | 0.43 % | as of Jun 30, 2026 ↗ |
| Fidelity Extended Market Index Fund Fidelity Concord Street Trust | 177,681 | 1.5M $ | 0.00 % | 0.32 % | as of May 31, 2026 ↗ |
| VANGUARD MARKET NEUTRAL FUND VANGUARD MONTGOMERY FUNDS | 168,915 | 1.2M $ | 0.20 % | 0.31 % | as of Jun 30, 2026 ↗ |
| VANGUARD RUSSELL 2000 INDEX FUND VANGUARD SCOTTSDALE FUNDS | 168,486 | 1.4M $ | 0.01 % | 0.31 % | as of May 31, 2026 ↗ |
| Schwab U.S. Small-Cap ETF SCHWAB STRATEGIC TRUST | 161,663 | 1.4M $ | 0.01 % | 0.30 % | as of May 31, 2026 ↗ |
| Dimensional U.S. Small Cap ETF Dimensional ETF Trust | 150,504 | 949.7K $ | 0.01 % | 0.27 % | as of Jul 31, 2026 ↗ |
| VIP Health Care Portfolio Variable Insurance Products Fund IV | 145,000 | 1M $ | 0.09 % | 0.26 % | as of Jun 30, 2026 ↗ |
| Strategic Advisers Fidelity U.S. Total Stock Fund Fidelity Rutland Square Trust II | 136,560 | 1.1M $ | 0.00 % | 0.25 % | as of May 31, 2026 ↗ |
| Fidelity Series Small Cap Core Fund Fidelity Concord Street Trust | 132,200 | 834.2K $ | 0.05 % | 0.24 % | as of Jul 31, 2026 ↗ |
| Fidelity Small Cap Stock Fund Fidelity Concord Street Trust | 131,691 | 831K $ | 0.06 % | 0.24 % | as of Jul 31, 2026 ↗ |
| Fidelity Fundamental Small-Mid Cap ETF Fidelity Covington Trust | 93,712 | 591.3K $ | 0.04 % | 0.17 % | as of Jul 31, 2026 ↗ |
| Schwab Small-Cap Index Fund SCHWAB CAPITAL TRUST | 84,939 | 536K $ | 0.01 % | 0.16 % | as of Jul 31, 2026 ↗ |
| Fidelity Small Cap Discovery Fund Fidelity Concord Street Trust | 75,300 | 475.1K $ | 0.02 % | 0.14 % | as of Jul 31, 2026 ↗ |
| U.S. MICRO CAP PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 73,550 | 464.1K $ | 0.01 % | 0.13 % | as of Jul 31, 2026 ↗ |
| VANGUARD HEALTH CARE INDEX FUND VANGUARD WORLD FUND | 72,472 | 605.9K $ | 0.00 % | 0.13 % | as of May 31, 2026 ↗ |
| Fidelity Series Small Cap Discovery Fund Fidelity Concord Street Trust | 69,306 | 437.3K $ | 0.02 % | 0.13 % | as of Jul 31, 2026 ↗ |
| Fidelity Total Market Index Fund Fidelity Concord Street Trust | 64,388 | 538.3K $ | 0.00 % | 0.12 % | as of May 31, 2026 ↗ |
| Avantis U.S. Small Cap Equity ETF American Century ETF Trust | 62,606 | 523.4K $ | 0.02 % | 0.11 % | as of May 31, 2026 ↗ |
| Simplify Propel Opportunities ETF Simplify Exchange Traded Funds | 62,113 | 429.8K $ | 0.56 % | 0.11 % | as of Jun 30, 2026 ↗ |
| Fidelity Enhanced Small Cap Core ETF Fidelity Covington Trust | 61,682 | 426.8K $ | 0.01 % | 0.11 % | as of Jun 30, 2026 ↗ |
| Master Small Cap Index Series Quantitative Master Series LLC | 55,900 | 386.8K $ | 0.01 % | 0.10 % | as of Jun 30, 2026 ↗ |
| ALPS Medical Breakthroughs ETF ALPS ETF TRUST | 55,699 | 465.6K $ | 0.29 % | 0.10 % | as of May 31, 2026 ↗ |
| Fidelity Series Total Market Index Fund Fidelity Concord Street Trust | 51,794 | 433K $ | 0.00 % | 0.09 % | as of May 31, 2026 ↗ |
| Virtus Biotech Clinical Trials Etf ETFis Series Trust I | 50,952 | 321.5K $ | 0.69 % | 0.09 % | as of Jul 31, 2026 ↗ |
| JPMorgan Small Cap Value Fund JPMorgan Trust II | 49,678 | 343.8K $ | 0.03 % | 0.09 % | as of Jun 30, 2026 ↗ |
| iShares Core S&P Total U.S. Stock Market ETF iShares Trust | 49,639 | 343.5K $ | 0.00 % | 0.09 % | as of Jun 30, 2026 ↗ |
| Fidelity Small Cap Value Index Fund Fidelity Salem Street Trust | 49,342 | 341.4K $ | 0.02 % | 0.09 % | as of Jun 30, 2026 ↗ |
| Nuveen Small Cap Blend Index Fund TIAA-CREF Funds | 46,924 | 296.1K $ | 0.01 % | 0.09 % | as of Jul 31, 2026 ↗ |
| U.S. SMALL CAP PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 39,624 | 250K $ | 0.00 % | 0.07 % | as of Jul 31, 2026 ↗ |
| EQ/2000 Managed Volatility Portfolio EQ Advisors Trust | 36,047 | 249.4K $ | 0.01 % | 0.07 % | as of Jun 30, 2026 ↗ |
| Fidelity Nasdaq Composite Index Fund Fidelity Concord Street Trust | 35,347 | 295.5K $ | 0.00 % | 0.06 % | as of May 31, 2026 ↗ |
| Invesco RAFI US 1500 Small-Mid ETF Invesco Exchange-Traded Fund Trust | 33,698 | 212.6K $ | 0.01 % | 0.06 % | as of Jul 31, 2026 ↗ |
| Allspring Disciplined Small Cap Fund ALLSPRING FUNDS TRUST | 28,913 | 200.1K $ | 0.11 % | 0.05 % | as of Jun 30, 2026 ↗ |
| Nuveen Equity Index Fund TIAA-CREF Funds | 28,718 | 181.2K $ | 0.00 % | 0.05 % | as of Jul 31, 2026 ↗ |
| VANGUARD BALANCED INDEX FUND VANGUARD VALLEY FORGE FUNDS | 26,407 | 182.7K $ | 0.00 % | 0.05 % | as of Jun 30, 2026 ↗ |
| VANGUARD RUSSELL 2000 VALUE INDEX FUND VANGUARD SCOTTSDALE FUNDS | 25,380 | 212.2K $ | 0.02 % | 0.05 % | as of May 31, 2026 ↗ |
| Fidelity Disruptive Medicine ETF Fidelity Covington Trust | 24,900 | 208.2K $ | 0.51 % | 0.05 % | as of May 31, 2026 ↗ |
| EQ/Small Company Index Portfolio EQ Advisors Trust | 24,780 | 171.5K $ | 0.01 % | 0.05 % | as of Jun 30, 2026 ↗ |
| LVIP State Street Small-Cap Index Fund LINCOLN VARIABLE INSURANCE PRODUCTS TRUST | 23,300 | 161.2K $ | 0.01 % | 0.04 % | as of Jun 30, 2026 ↗ |
| Schwab Total Stock Market Index Fund SCHWAB CAPITAL TRUST | 21,000 | 132.5K $ | 0.00 % | 0.04 % | as of Jul 31, 2026 ↗ |
| VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND VANGUARD INSTITUTIONAL INDEX FUNDS | 20,425 | 141.3K $ | 0.00 % | 0.04 % | as of Jun 30, 2026 ↗ |
| Schwab U.S. Broad Market ETF SCHWAB STRATEGIC TRUST | 20,416 | 170.7K $ | 0.00 % | 0.04 % | as of May 31, 2026 ↗ |
| Health Sciences Portfolio PACIFIC SELECT FUND | 20,337 | 140.7K $ | 0.04 % | 0.04 % | as of Jun 30, 2026 ↗ |
| Small Cap Index Fund Northern Funds | 18,296 | 126.6K $ | 0.01 % | 0.03 % | as of Jun 30, 2026 ↗ |
| Fidelity ZERO Total Market Index Fund Fidelity Concord Street Trust | 17,310 | 109.2K $ | 0.00 % | 0.03 % | as of Jul 31, 2026 ↗ |
| ATM Small Cap Managed Volatility Portfolio EQ Advisors Trust | 17,113 | 118.4K $ | 0.01 % | 0.03 % | as of Jun 30, 2026 ↗ |
| EQ/AB Small Cap Growth Portfolio EQ Advisors Trust | 17,030 | 117.8K $ | 0.01 % | 0.03 % | as of Jun 30, 2026 ↗ |
| Global X Russell 2000 ETF GLOBAL X FUNDS | 16,828 | 106.2K $ | 0.01 % | 0.03 % | as of Jul 31, 2026 ↗ |
| VANGUARD GROWTH AND INCOME FUND VANGUARD QUANTITATIVE FUNDS | 15,200 | 105.2K $ | 0.00 % | 0.03 % | as of Jun 30, 2026 ↗ |
| Bridge Builder Small/Mid Cap Value Fund Bridge Builder Trust | 14,836 | 102.7K $ | 0.00 % | 0.03 % | as of Jun 30, 2026 ↗ |
| Strategic Advisers U.S. Total Stock Fund Fidelity Rutland Square Trust II | 14,079 | 117.7K $ | 0.00 % | 0.03 % | as of May 31, 2026 ↗ |
| Small Cap Index Fund VALIC Co I | 13,073 | 109.3K $ | 0.01 % | 0.02 % | as of May 31, 2026 ↗ |
| Diversified Equity Alpha Master Portfolio Master Investment Portfolio | 12,699 | 87.9K $ | 0.00 % | 0.02 % | as of Jun 30, 2026 ↗ |
| MetLife Russell 2000 Index Portfolio Brighthouse Funds Trust II | 12,553 | 86.9K $ | 0.01 % | 0.02 % | as of Jun 30, 2026 ↗ |
| JPMorgan Small Cap Value Portfolio Brighthouse Funds Trust I | 12,221 | 84.6K $ | 0.03 % | 0.02 % | as of Jun 30, 2026 ↗ |
| Fidelity ZERO Extended Market Index Fund Fidelity Concord Street Trust | 12,184 | 76.9K $ | 0.00 % | 0.02 % | as of Jul 31, 2026 ↗ |
| U.S. VECTOR EQUITY PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 11,605 | 73.2K $ | 0.00 % | 0.02 % | as of Jul 31, 2026 ↗ |
| Fidelity MSCI Health Care Index ETF FIDELITY COVINGTON TRUST | 11,496 | 72.5K $ | 0.00 % | 0.02 % | as of Jul 31, 2026 ↗ |
| STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO STATE STREET INSTITUTIONAL INVESTMENT TRUST | 11,100 | 76.8K $ | 0.00 % | 0.02 % | as of Jun 30, 2026 ↗ |
| Dimensional US Core Equity Market ETF Dimensional ETF Trust | 10,145 | 64K $ | 0.00 % | 0.02 % | as of Jul 31, 2026 ↗ |
| Small Cap Value Fund VALIC Co I | 10,120 | 84.6K $ | 0.03 % | 0.02 % | as of May 31, 2026 ↗ |
| iShares Russell 3000 ETF iShares Trust | 9,449 | 65.4K $ | 0.00 % | 0.02 % | as of Jun 30, 2026 ↗ |
| Multi-Manager Small Cap Equity Strategies Fund COLUMBIA FUNDS SERIES TRUST I | 8,875 | 74.2K $ | 0.01 % | 0.02 % | as of May 31, 2026 ↗ |
| Small-Cap Index Portfolio PACIFIC SELECT FUND | 8,389 | 58.1K $ | 0.01 % | 0.02 % | as of Jun 30, 2026 ↗ |
| U.S. CORE EQUITY 2 PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 8,066 | 50.9K $ | 0.00 % | 0.01 % | as of Jul 31, 2026 ↗ |
| U.S. Small Cap Equity Fund RUSSELL INVESTMENT CO | 7,632 | 48.2K $ | 0.00 % | 0.01 % | as of Jul 31, 2026 ↗ |
| Small Cap Index Trust John Hancock Variable Insurance Trust | 7,520 | 52K $ | 0.01 % | 0.01 % | as of Jun 30, 2026 ↗ |
| U.S. CORE EQUITY 1 PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 6,674 | 42.1K $ | 0.00 % | 0.01 % | as of Jul 31, 2026 ↗ |
| NVIT Small Cap Index Fund Nationwide Variable Insurance Trust | 6,522 | 45.1K $ | 0.01 % | 0.01 % | as of Jun 30, 2026 ↗ |
| Dimensional U.S. Core Equity 2 ETF Dimensional ETF Trust | 6,279 | 39.6K $ | 0.00 % | 0.01 % | as of Jul 31, 2026 ↗ |
| 1290 VT Small Cap Value Portfolio EQ Advisors Trust | 5,986 | 41.4K $ | 0.01 % | 0.01 % | as of Jun 30, 2026 ↗ |
| NVIT Multi-Manager Small Company Fund Nationwide Variable Insurance Trust | 5,900 | 40.8K $ | 0.01 % | 0.01 % | as of Jun 30, 2026 ↗ |
| DWS Small Cap Index VIP DEUTSCHE DWS INVESTMENTS VIT FUNDS | 5,514 | 38.2K $ | 0.01 % | 0.01 % | as of Jun 30, 2026 ↗ |
| iShares Russell Small/Mid-Cap Index Fund BlackRock Funds | 5,366 | 33.9K $ | 0.00 % | 0.01 % | as of Jul 31, 2026 ↗ |
| T. Rowe Price Small-Cap Index Fund T. ROWE PRICE INDEX TRUST, INC. | 5,311 | 36.8K $ | 0.01 % | 0.01 % | as of Jun 30, 2026 ↗ |
| NVIT Small Cap Value Fund Nationwide Variable Insurance Trust | 5,300 | 36.7K $ | 0.02 % | 0.01 % | as of Jun 30, 2026 ↗ |
| Avantis U.S. Small Cap Equity Fund American Century ETF Trust | 5,295 | 44.3K $ | 0.03 % | 0.01 % | as of May 31, 2026 ↗ |
| SIIT EXTENDED MARKET INDEX FUND SEI INSTITUTIONAL INVESTMENTS TRUST | 5,200 | 43.5K $ | 0.00 % | 0.01 % | as of May 31, 2026 ↗ |
| Voya RussellTM Small Cap Index Portfolio Voya VARIABLE PORTFOLIOS INC | 4,879 | 33.8K $ | 0.01 % | 0.01 % | as of Jun 30, 2026 ↗ |
| Victory Extended Market Index Fund Victory Portfolios III | 4,193 | 26.5K $ | 0.00 % | 0.01 % | as of Jul 31, 2026 ↗ |
| BlackRock Small Cap Index V.I. Fund BlackRock Variable Series Funds, Inc. | 4,040 | 28K $ | 0.01 % | 0.01 % | as of Jun 30, 2026 ↗ |
| JNL/DFA U.S. Small Cap Fund JNL Series Trust | 3,809 | 26.4K $ | 0.00 % | 0.01 % | as of Jun 30, 2026 ↗ |
| SA Small Cap Index Portfolio SUNAMERICA SERIES TRUST | 3,666 | 23.1K $ | 0.01 % | 0.01 % | as of Jul 31, 2026 ↗ |
| PD Small-Cap Value Index Portfolio PACIFIC SELECT FUND | 2,959 | 20.5K $ | 0.01 % | 0.01 % | as of Jun 30, 2026 ↗ |
The funds most exposed to it
The weight is the share of a fund's net assets. The holders table ranks funds by number of shares. This one ranks them by the weight of the company in each fund.
| Fund | Weight in fund | |
|---|---|---|
| LAGO ERIE, SICAV, S.A. GESALCALA, S.A., S.G.I.I.C. | 1.49 % | as of Dec 31, 2025 ↗ |
| VIFAG 2002, SICAV S.A. GESALCALA, S.A., S.G.I.I.C. | 0.98 % | as of Dec 31, 2025 ↗ |
| Virtus Biotech Clinical Trials Etf ETFis Series Trust I | 0.69 % | as of Jul 31, 2026 ↗ |
| Simplify Propel Opportunities ETF Simplify Exchange Traded Funds | 0.56 % | as of Jun 30, 2026 ↗ |
| Fidelity Disruptive Medicine ETF Fidelity Covington Trust | 0.51 % | as of May 31, 2026 ↗ |
| SEB Läkemedelsfond SEB Funds AB | 0.47 % | as of Mar 31, 2026 ↗ |
| ALPS Medical Breakthroughs ETF ALPS ETF TRUST | 0.29 % | as of May 31, 2026 ↗ |
| Fidelity Advisor Biotechnology Fund Fidelity Advisor Series VII | 0.20 % | as of Jul 31, 2026 ↗ |
| VANGUARD MARKET NEUTRAL FUND VANGUARD MONTGOMERY FUNDS | 0.20 % | as of Jun 30, 2026 ↗ |
| Fidelity Series Small Cap Opportunities Fund Fidelity Securities Fund | 0.13 % | as of Jul 31, 2026 ↗ |
Quarter after quarter
Each row is one quarter of SEC filings, newest first. The change compares each quarter with the one before.
| Quarter | Holders | Change | Shares | Change |
|---|---|---|---|---|
| 2026Q3 | 147 | 0 | 14,138,907 | -3.7 % |
| 2026Q2 | 147 | +15 | 14,679,255 | +5.8 % |
| 2026Q1 | 132 | +16 | 13,876,893 | +10.4 % |
| 2025Q4 | 116 | +14 | 12,571,549 | +8.7 % |
| 2025Q3 | 102 | 0 | 11,569,059 | +43.3 % |
| 2025Q2 | 102 | +21 | 8,072,397 | -0.8 % |
| 2025Q1 | 81 | +74 | 8,139,174 | +208.0 % |
| 2024Q4 | 7 | 2,642,264 |
Institutional managers
132 managers declare this company to the SEC (Form 13F). The table shows the 25 largest.
| Manager | Shares | Value | |
|---|---|---|---|
| FMR LLC | 8,101,563 | 72.9M $ | as of Mar 31, 2026 |
| ORBIMED ADVISORS LLC | 5,693,589 | 51.2M $ | as of Mar 31, 2026 |
| BlackRock, Inc. | 3,370,689 | 30.3M $ | as of Mar 31, 2026 |
| Decheng Capital LLC | 2,724,868 | 24.5M $ | as of Mar 31, 2026 |
| ENAVATE SCIENCES GP, LLC | 2,459,703 | 22.1M $ | as of Mar 31, 2026 |
| Y-Intercept (Hong Kong) Ltd | 1,000,631 | 9M $ | as of Mar 31, 2026 |
| FEDERATED HERMES, INC. | 979,758 | 8.8M $ | as of Mar 31, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | 950,617 | 8.6M $ | as of Mar 31, 2026 |
| MILLENNIUM MANAGEMENT LLC | 937,323 | 8.4M $ | as of Mar 31, 2026 |
| SEB Asset Management AB | 878,473 | 7.9M $ | as of Mar 31, 2026 |
| Bain Capital Life Sciences Investors, LLC | 867,211 | 7.8M $ | as of Mar 31, 2026 |
| Woodline Partners LP | 831,481 | 7.5M $ | as of Mar 31, 2026 |
| D. E. Shaw & Co., Inc. | 820,480 | 7.4M $ | as of Mar 31, 2026 |
| Parkman Healthcare Partners LLC | 786,783 | 7.1M $ | as of Mar 31, 2026 |
| SAMSARA BIOCAPITAL, LLC | 736,047 | 6.6M $ | as of Mar 31, 2026 |
| Pictet Asset Management Holding SA | 733,431 | 6.6M $ | as of Mar 31, 2026 |
| STATE STREET CORP | 705,350 | 6.3M $ | as of Mar 31, 2026 |
| HSBC HOLDINGS PLC | 640,326 | 5.8M $ | as of Mar 31, 2026 |
| Qube Research & Technologies Ltd | 619,321 | 5.6M $ | as of Mar 31, 2026 |
| MORGAN STANLEY | 552,609 | 5M $ | as of Mar 31, 2026 |
| JPMORGAN CHASE & CO | 463,001 | 4.1M $ | as of Mar 31, 2026 |
| Nantahala Capital Management, LLC | 400,000 | 3.6M $ | as of Mar 31, 2026 |
| Altshuler Shaham Ltd | 380,061 | 3.4M $ | as of Mar 31, 2026 |
| SPHERA FUNDS MANAGEMENT LTD. | 358,000 | 3.2M $ | as of Mar 31, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | 342,353 | 3.1M $ | as of Mar 31, 2026 |
Declared shareholders of Upstream Bio Inc
There are 2 beneficial ownership filings. These stakes do not add up. An asset manager that files includes its own funds, which already appear among the funds on this page.
| Shareholder | Declared stake | Shares | |
|---|---|---|---|
| Norges Bank | 7.73 % | 4,206,586 | as of Jun 30, 2026 · SCHEDULE 13G |
| BlackRock, Inc. | 5.20 % | 2,814,714 | as of Jun 30, 2026 · SCHEDULE 13G |
Cite this page
Titelia. "Funds holding Upstream Bio Inc". https://titelia.com/en/stocks/upstream-bio-inc-US91678A1079