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Trexquant Investment LP

Position in UPB — Upstream Bio, Inc.

CIK 1633445 STAMFORD, CT

Position in UPB

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$3,227,695
+$1,637,782 QoQ
Shares Held
466,430
+164.0% QoQ
Ownership
0.852%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#24
of 148 holders
Holding Since
Dec 2025
3 quarters on record
Voting authority Sole 91% Shared 0% None 9%

Common Shares in UPB Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

Trexquant Investment LP holds $612,941,942 across 144 Biotechnology names. UPB ranks #55 (0.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in UPB

Export CSV
3 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $3,227,695 466,430
2026-03-31 $1,589,913 176,657
2025-12-31 $842,980 31,049