Vanguard Asset Management
UPB

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

Vanguard 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 		$157K Buy
22,724
+13,474
+146% +$113K ﹤0.01% 2395
2026
Q1 		$83.3K Buy
+9,250
New +$166K ﹤0.01% 2421

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

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

Vanguard Asset Management increased its Upstream Bio Inc (UPB) stake by 146% in Q2 2026, buying an estimated $113K and bringing the position to 22,724 shares worth $157K. The position accounts for ﹤0.01% of the portfolio, ranked #2395.

Vanguard Asset Management first reported a position in UPB in Q1 2026 and has held it in 2 quarters since. 135 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

  • Vanguard Asset Management held 22,724 shares of Upstream Bio Inc worth $157K as of Q2 2026.
  • Vanguard Asset Management bought 13,474 Upstream Bio Inc shares in Q2 2026, an estimated $113K.
  • Upstream Bio Inc made up ﹤0.01% of Vanguard Asset Management's portfolio in Q2 2026, its #2395 holding.
  • Vanguard Asset Management first reported a position in Upstream Bio Inc in Q1 2026 and has held it in 2 quarters since.
  • 135 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

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