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Voleon Capital Management LP

Position in UPB — Upstream Bio, Inc.

CIK 1479847 BERKELEY, CA

Position in UPB

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$1,973,819
New position
Shares Held
285,234
first reported quarter
Ownership
0.521%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
#35
of 148 holders
Holding Since
Jun 2026
1 quarter on record
Voting authority Sole 73% Shared 0% None 27%

Position in Biotechnology

Healthcare · as of Jun 30, 2026

Voleon Capital Management LP holds $146,651,873 across 61 Biotechnology names. UPB ranks #17 (1.3% 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 $1,973,819 285,234