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ACADIAN ASSET MANAGEMENT LLC

Position in UPB — Upstream Bio, Inc.

CIK 916542 Boston, MA

Position in UPB

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$1,211,761
New position
Shares Held
175,110
first reported quarter
Ownership
0.320%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#46
of 148 holders
Holding Since
Jun 2026
1 quarter on record
Voting authority Sole 100% Shared 0% None 0%

Position in Biotechnology

Healthcare · as of Jun 30, 2026

ACADIAN ASSET MANAGEMENT LLC holds $732,389,014 across 168 Biotechnology names. UPB ranks #60 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in UPB

Export CSV
1 filing row on record
Report Date Value (USD) Shares
2026-06-30 $1,211,761 175,110