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Woodline Partners LP

Position in UPB — Upstream Bio, Inc.

CIK 1784547 San Francisco, CA

Position in UPB

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$5,753,848
-$1,729,481 QoQ
Shares Held
831,481
0.0% QoQ
Ownership
1.52%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#15
of 148 holders
Holding Since
Dec 2024
7 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 Jun 30, 2026

Woodline Partners LP holds $4,400,572,274 across 197 Biotechnology names. UPB ranks #125 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in UPB

Export CSV
7 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $5,753,848 831,481
2026-03-31 $7,483,329 831,481
2025-12-31 $20,640,841 760,252
2025-09-30 $11,328,360 602,252
2025-06-30 $6,129,606 558,252
2025-03-31 $3,409,225 557,063
2024-12-31 $8,655,840 526,511