Skip to main content

ORBIMED ADVISORS LLC

Position in UPB — Upstream Bio, Inc.

CIK 1055951 New York, NY

Position in UPB

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$51,242,301
-$103,338,640 QoQ
Shares Held
5,693,589
0.0% QoQ
Ownership
10.5%
of shares outstanding
% of Portfolio
1.04%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2024
6 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in UPB Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

ORBIMED ADVISORS LLC holds $2,871,604,021 across 72 Biotechnology names. UPB ranks #18 (1.8% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in UPB

Export CSV
6 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $51,242,301 5,693,589
2025-12-31 $154,580,941 5,693,589
2025-09-30 $107,096,409 5,693,589
2025-06-30 $62,515,607 5,693,589
2025-03-31 $34,844,764 5,693,589
2024-12-31 $93,602,603 5,693,589