Caption Management’s Upstream Bio Inc UPB Stock Holding History

Caption Management’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
2025 Q4	–	Sell	-18,196	Closed	-$342K	–	2168
2025 Q3	$342K	Buy	+18,196	New	+$283K	﹤0.01%	1382

Other funds holding UPB

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Decheng Capital Menlo Park, California $661M AUM 299.97% 1-Year Est. Return

Norges Bank Oslo, Norway $935B AUM

Enavate Sciences Menlo Park, California $352M AUM 220.14% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

Altshuler Shaham Tel Aviv, Israel $5.54B AUM 44.68% 1-Year Est. Return

Caption Management's UPB Position: Q4 2025 in Review

Caption Management sold out of Upstream Bio Inc (UPB) in Q4 2025, closing a stake of 18,196 shares — an estimated $342K sold.

Caption Management first reported a position in UPB in Q3 2025 and held it in 1 quarter. The position peaked at $342K in Q3 2025. 133 funds tracked by Wall St. Rank hold UPB as of Q4 2025.

Caption Management reported no remaining Upstream Bio Inc position as of Q4 2025 after selling out during the quarter.
Caption Management sold 18,196 Upstream Bio Inc shares in Q4 2025, an estimated $342K.
Caption Management first reported a position in Upstream Bio Inc in Q3 2025 and held it in 1 quarter.
Caption Management's Upstream Bio Inc position peaked at $342K in Q3 2025.
133 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q4 2025.

Based on Caption Management's 13F filing for Q4 2025, filed 17 Feb 2026.