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Upstream Bio, Inc. (UPB)

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6.30
-0.19
(-2.93%)
At close: April 3 at 4:00:00 PM EDT
6.40
+0.10
+(1.59%)
Pre-Market: 8:06:31 AM EDT

Major Holders

Breakdown
19.80% % of Shares Held by All Insider
87.82% % of Shares Held by Institutions
109.50% % of Float Held by Institutions
101 Number of Institutions Holding Shares

Top Institutional Holders

HolderSharesDate Reported% OutValue
FMR, LLC 7.18M Dec 31, 2024 13.38% 45,209,979
Orbimed Advisors LLC. 5.69M Dec 31, 2024 10.61% 35,869,611
Decheng Capital LLC 3.29M Dec 31, 2024 6.12% 20,697,346
TCG Crossover Management, LLC 2.8M Dec 31, 2024 5.22% 17,651,107
Enavate Sciences Gp, LLC 2.46M Dec 31, 2024 4.59% 15,496,129
Bain Capital Life Sciences Investors, LLC 2.3M Dec 31, 2024 4.28% 14,460,529
VR Adviser, LLC 2.3M Dec 31, 2024 4.28% 14,460,510
Samsara BioCapital, LLC 2.22M Dec 31, 2024 4.13% 13,968,020
Wellington Management Group, LLP 1.58M Dec 31, 2024 2.95% 9,973,870
Blackrock Inc. 1.12M Dec 31, 2024 2.08% 7,042,140

Top Mutual Fund Holders

HolderSharesDate Reported% OutValue
Fidelity Securities Fund-Fidelity Small Cap Growth Fund 1.23M Jan 31, 2025 2.29% 7,727,580
Fidelity Select Portfolios-Health Care Portfolio 853.67k Feb 28, 2025 1.59% 5,378,102
Fidelity Advisor Series VII-Fidelity Advisor Biotechnology Fund 582.5k Feb 28, 2025 1.09% 3,669,750
Fidelity Securities Fund-Fidelity Small Cap Growth K6 Fund 540.31k Jan 31, 2025 1.01% 3,403,953
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund 528.58k Dec 31, 2024 0.99% 3,330,066
Fidelity Advisor Series VII-Fidelity Advisor Health Care Fund 521.98k Feb 28, 2025 0.97% 3,288,455
AB CAP FUND, INC.-AB Small Cap Growth Portfolio 480.01k Feb 28, 2025 0.89% 3,024,069
iShares Trust-iShares Russell 2000 ETF 418.89k Feb 28, 2025 0.78% 2,639,000
Fidelity Select Portfolios-Biotechnology Portfolio 385.66k Feb 28, 2025 0.72% 2,429,639
Fidelity Mt. Vernon Street Trust-Fidelity Growth Company Fund 334.08k Feb 28, 2025 0.62% 2,104,691

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