Paul Tudor Jones’s Upstream Bio Inc UPB Stock Holding History

Paul Tudor Jones’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	–	Sell	-26,412	Closed	-$238K	–	4410
2026 Q1	$238K	Buy	+26,412	New	+$475K	﹤0.01%	3277

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

Paul Tudor Jones's UPB Position: Q2 2026 in Review

Paul Tudor Jones sold out of Upstream Bio Inc (UPB) in Q2 2026, closing a stake of 26,412 shares — an estimated $238K sold.

Paul Tudor Jones first reported a position in UPB in Q1 2026 and held it in 1 quarter. The position peaked at $238K in Q1 2026. 149 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

Paul Tudor Jones reported no remaining Upstream Bio Inc position as of Q2 2026 after selling out during the quarter.
Paul Tudor Jones sold 26,412 Upstream Bio Inc shares in Q2 2026, an estimated $238K.
Paul Tudor Jones first reported a position in Upstream Bio Inc in Q1 2026 and held it in 1 quarter.
Paul Tudor Jones's Upstream Bio Inc position peaked at $238K in Q1 2026.
149 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on Tudor Investment Corp's 13F filing for Q2 2026, filed 14 Aug 2026.