UBS AM’s Upstream Bio Inc UPB Stock Holding History

UBS AM’s Portfolio UPB Stock Details UPB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$4.07K	Hold	588	–	–	﹤0.01%	3429
2026 Q1	$5.29K	Buy	588 +346	+143%	+$6.22K	﹤0.01%	3450
2025 Q4	$6.57K	Buy	+242	New	+$6.02K	﹤0.01%	2933

Other funds holding UPB

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Decheng Capital Menlo Park, California $732M AUM 275.56% 1-Year Est. Return

Enavate Sciences Menlo Park, California $345M AUM 134.64% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

UBS AM's UPB Position: Q2 2026 in Review

UBS AM held its Upstream Bio Inc (UPB) position steady in Q2 2026 at 588 shares worth $4.07K. The position accounts for ﹤0.01% of the portfolio, ranked #3429.

UBS AM first reported a position in UPB in Q4 2025 and has held it in 3 quarters since. The position peaked at $6.57K in Q4 2025. 150 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

UBS AM held 588 shares of Upstream Bio Inc worth $4.07K as of Q2 2026.
UBS AM left its Upstream Bio Inc share count unchanged in Q2 2026.
Upstream Bio Inc made up ﹤0.01% of UBS AM's portfolio in Q2 2026, its #3429 holding.
UBS AM first reported a position in Upstream Bio Inc in Q4 2025 and has held it in 3 quarters since.
UBS AM's Upstream Bio Inc position peaked at $6.57K in Q4 2025.
150 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on UBS AM's 13F filing for Q2 2026, filed 13 Aug 2026.