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STATE STREET CORP

Position in UPB — Upstream Bio, Inc.

CIK 93751 BOSTON, MA

Position in UPB

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$6,348,150
-$29,468,835 QoQ
Shares Held
705,350
-46.5% QoQ
Ownership
1.30%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2024
6 quarters on record
Voting authority Sole 26% Shared 0% None 74%

Common Shares in UPB Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

STATE STREET CORP holds $30,291,958,108 across 423 Biotechnology names. UPB ranks #185 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in UPB

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6 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $6,348,150 705,350
2025-12-31 $35,816,985 1,319,226
2025-09-30 $20,965,268 1,114,581
2025-06-30 $5,285,497 481,375
2025-03-31 $1,808,992 295,587
2024-12-31 $4,063,754 247,187