Acadian Asset Management
UPB

Acadian Asset Management’s Upstream Bio Inc UPB Stock Holding History

Acadian Asset 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
2026
Q2 		$1.21M Buy
+175,110
New +$1.47M ﹤0.01% 1208

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

Acadian Asset Management's UPB Position: Q2 2026 in Review

Acadian Asset Management opened a new position in Upstream Bio Inc (UPB) in Q2 2026: 175,110 shares worth $1.21M. The stake represents ﹤0.01% of the portfolio and ranks #1208 among its holdings.

150 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

  • Acadian Asset Management held 175,110 shares of Upstream Bio Inc worth $1.21M as of Q2 2026.
  • Upstream Bio Inc was a new Acadian Asset Management position in Q2 2026.
  • Upstream Bio Inc made up ﹤0.01% of Acadian Asset Management's portfolio in Q2 2026, its #1208 holding.
  • 150 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on Acadian Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.