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Equibles

Entropy Technologies, LP

Position in UPB — Upstream Bio, Inc.

CIK 1976151 NEW YORK, NY
Back to UPB Full portfolio

Position in UPB

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$121,390
-$88,634 QoQ
Shares Held
17,542
-24.8% QoQ
Ownership
0.032%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#94
of 148 holders
Holding Since
Mar 2026
2 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

Entropy Technologies, LP holds $55,621,736 across 48 Biotechnology names. UPB ranks #46 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ALNY
Alnylam Pharmaceuticals, Inc.
 41,204 $12,403,640
2 REGN
Regeneron Pharmaceuticals, Inc.
 9,606 $5,989,725
3 INSM
INSMED Inc
 45,469 $4,847,904
4 RPRX
Royalty Pharma plc
 58,767 $3,295,065
5 IONS
Ionis Pharmaceuticals Inc
 36,815 $2,919,061
6 EXEL
Exelixis, Inc.
 52,488 $2,855,872
7 BBIO
BridgeBio Pharma, Inc.
 27,148 $2,021,983
8 TARS
Tarsus Pharmaceuticals, Inc.
 24,583 $1,547,254

All Filings in UPB

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2 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $121,390 17,542
2026-03-31 $210,024 23,336