Upstream Bio, Inc. - UPB

Sector: Healthcare · Industry: Pharmaceutical Preparations
Website: No information yet · Social: No information yet

Company profile

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Quarter snapshot

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Q3 2026 · Q2 2026
Value (USD)
Total reported value ($000)
$350.3M
QoQ value delta ($000)
-$1K (-0.0%)
Implied price effect (QoQ)
-0.0%
Shares
Total shares
50,608,591
QoQ shares delta
+365 (+0.0%)
Total shares held by funds (by quarter)
Shares (left)

Fund holders include prior positions carried forward until a new 13F confirms a change. Reported holders have reported a position in this security for that quarter; this is not the total number of 13F filers.

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Top holders (Q3 2026)

Top 25 only Full list
Partial Q3 2026 data: 2 holders have filed so far. Prior holders are carried forward until their next 13F confirms a change.
Manager Value ($000) Shares % of 13F
FMR LLC 56,487 8,162,897 0.0%
ORBIMED ADVISORS LLC 39,399 5,693,589 0.73%
NORGES BANK 26,078 3,768,619 0.0%
BlackRock, Inc. 25,973 3,753,358 0.0%
Decheng Capital LLC 18,856 2,724,868 2.58%
Enavate Sciences GP, LLC 17,021 2,459,703 4.93%
VANGUARD CAPITAL MANAGEMENT LLC 12,986 1,876,734 0.0%
MILLENNIUM MANAGEMENT LLC 7,914 1,143,775 0.0%
D. E. Shaw & Co., Inc. 7,169 1,036,044 0.0%
JPMORGAN CHASE & CO 7,013 1,012,044 0.0%
Qube Research & Technologies Ltd 6,771 978,500 0.01%
Parkman Healthcare Partners LLC 6,471 935,247 0.66%
GEODE CAPITAL MANAGEMENT, LLC 6,445 931,261 0.0%
SEB Asset Management AB 6,079 878,473 0.02%
Woodline Partners LP 5,753 831,481 0.02%
STATE STREET CORP 5,302 766,323 0.0%
VANGUARD PORTFOLIO MANAGEMENT LLC 4,931 712,667 0.0%
Y-Intercept (Hong Kong) Ltd 4,799 693,555 0.09%
Bain Capital Life Sciences Investors, LLC 4,158 600,949 0.25%
AQR CAPITAL MANAGEMENT LLC 3,770 544,869 0.0%
MORGAN STANLEY 3,630 524,632 0.0%
BNP PARIBAS FINANCIAL MARKETS 3,539 511,546 0.0%
Walleye Capital LLC 3,449 498,490 0.01%
Trexquant Investment LP 3,227 466,430 0.02%
Point72 Asset Management, L.P. 3,134 453,011 0.0%