UBS Group
UPB

UBS Group’s Upstream Bio Inc UPB Stock Holding History

UBS Group’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 		$1.62M Buy
234,714
+3,460
+1% +$29K ﹤0.01% 5299
2026
Q1 		$2.08M Sell
231,254
-1,574,989
-87% -$28.3M ﹤0.01% 4940
2025
Q4 		$49M Buy
1,806,243
+1,533,972
+563% +$38.2M 0.01% 1648
2025
Q3 		$5.12M Buy
272,271
+39,384
+17% +$612K ﹤0.01% 4012
2025
Q2 		$2.56M Buy
232,887
+101,336
+77% +$936K ﹤0.01% 4562
2025
Q1 		$805K Sell
131,551
-29,961
-19% -$286K ﹤0.01% 5466
2024
Q4 		$2.66M Buy
+161,512
New +$3.61M ﹤0.01% 4444

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

UBS Group's UPB Position: Q2 2026 in Review

UBS Group increased its Upstream Bio Inc (UPB) stake by 1.5% in Q2 2026, buying an estimated $29K and bringing the position to 234,714 shares worth $1.62M. The position accounts for ﹤0.01% of the portfolio, ranked #5299.

UBS Group first reported a position in UPB in Q4 2024 and has held it in 7 quarters since. The position peaked at $49M in Q4 2025. 149 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

  • UBS Group held 234,714 shares of Upstream Bio Inc worth $1.62M as of Q2 2026.
  • UBS Group bought 3,460 Upstream Bio Inc shares in Q2 2026, an estimated $29K.
  • Upstream Bio Inc made up ﹤0.01% of UBS Group's portfolio in Q2 2026, its #5299 holding.
  • UBS Group first reported a position in Upstream Bio Inc in Q4 2024 and has held it in 7 quarters since.
  • UBS Group's Upstream Bio Inc position peaked at $49M in Q4 2025.
  • 149 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on UBS Group's 13F filing for Q2 2026, filed 13 Aug 2026.