SAM
UPB

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

SEB 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 		$6.08M Hold
878,473
– – 0.02% 422
2026
Q1 		$7.91M Buy
+878,473
New +$15.8M 0.03% 360

Other funds holding UPB

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
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
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $108B AUM 37.29% 1-Year Est. Return
PHP
Parkman Healthcare Partners Stamford, Connecticut $977M AUM 110.37% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

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

SEB Asset Management held its Upstream Bio Inc (UPB) position steady in Q2 2026 at 878,473 shares worth $6.08M. The position accounts for 0.02% of the portfolio, ranked #422.

SEB Asset Management first reported a position in UPB in Q1 2026 and has held it in 2 quarters since. The position peaked at $7.91M in Q1 2026. 135 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

  • SEB Asset Management held 878,473 shares of Upstream Bio Inc worth $6.08M as of Q2 2026.
  • SEB Asset Management left its Upstream Bio Inc share count unchanged in Q2 2026.
  • Upstream Bio Inc made up 0.02% of SEB Asset Management's portfolio in Q2 2026, its #422 holding.
  • SEB Asset Management first reported a position in Upstream Bio Inc in Q1 2026 and has held it in 2 quarters since.
  • SEB Asset Management's Upstream Bio Inc position peaked at $7.91M in Q1 2026.
  • 135 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on SEB Asset Management's 13F filing for Q2 2026, filed 4 Aug 2026.