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DIMENSIONAL FUND ADVISORS LP

Position in UPB — Upstream Bio, Inc.

CIK 354204 AUSTIN, TX

Position in UPB

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$2,640,761
+$1,920,743 QoQ
Shares Held
381,613
+377.0% QoQ
Ownership
0.697%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#27
of 148 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority Sole 85% Shared 11% None 4%

Common Shares in UPB Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

DIMENSIONAL FUND ADVISORS LP holds $6,163,799,259 across 230 Biotechnology names. UPB ranks #129 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in UPB

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2 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,640,761 381,613
2026-03-31 $720,018 80,002