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TWO SIGMA INVESTMENTS, LP

Position in UPB — Upstream Bio, Inc.

CIK 1179392 NEW YORK, NY

Position in UPB

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$292,889
+$7,814 QoQ
Shares Held
42,325
+303.1% QoQ
Ownership
0.077%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#68
of 148 holders
Holding Since
Mar 2025
4 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

TWO SIGMA INVESTMENTS, LP holds $7,283,390,440 across 343 Biotechnology names. UPB ranks #274 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in UPB

Export CSV
4 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $292,889 42,325
2025-12-31 $285,075 10,500
2025-09-30 $197,505 10,500
2025-03-31 $133,348 21,789