JF
UPB

Jump Financial’s Upstream Bio Inc UPB Stock Holding History

Jump Financial’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 		$1.54M Sell
223,223
-96,177
-30% -$806K 0.01% 995
2026
Q1 		$2.87M Buy
+319,400
New +$5.75M 0.04% 527

Other funds holding UPB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
O
OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
DC
Decheng Capital Menlo Park, California $732M AUM 275.56% 1-Year Est. Return
ES
Enavate Sciences Menlo Park, California $345M AUM 134.64% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Jump Financial's UPB Position: Q2 2026 in Review

Jump Financial reduced its Upstream Bio Inc (UPB) stake by 30% in Q2 2026, selling an estimated $806K and leaving 223,223 shares worth $1.54M. The position accounts for 0.01% of the portfolio, ranked #995.

Jump Financial first reported a position in UPB in Q1 2026 and has held it in 2 quarters since. The position peaked at $2.87M in Q1 2026. 148 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

  • Jump Financial held 223,223 shares of Upstream Bio Inc worth $1.54M as of Q2 2026.
  • Jump Financial sold 96,177 Upstream Bio Inc shares in Q2 2026, an estimated $806K.
  • Upstream Bio Inc made up 0.01% of Jump Financial's portfolio in Q2 2026, its #995 holding.
  • Jump Financial first reported a position in Upstream Bio Inc in Q1 2026 and has held it in 2 quarters since.
  • Jump Financial's Upstream Bio Inc position peaked at $2.87M in Q1 2026.
  • 148 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on Jump Financial's 13F filing for Q2 2026, filed 13 Aug 2026.