Norges Bank
UPB

Norges Bank’s Upstream Bio Inc UPB Stock Holding History

Norges Bank’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 		$26.1M Buy
+3,768,619
New +$31.6M ﹤0.01% 1175
2026
Q1 		– Sell
-2,882,647
Closed -$78.3M – 1505
2025
Q4 		$78.3M Buy
+2,882,647
New +$71.8M 0.01% 854
2025
Q3 		– Sell
-969,916
Closed -$10.6M – 1676
2025
Q2 		$10.6M Hold
969,916
– – ﹤0.01% 1265
2025
Q1 		$5.94M Sell
969,916
-30,084
-3% -$287K ﹤0.01% 1349
2024
Q4 		$16.4M Buy
+1,000,000
New +$22.3M ﹤0.01% 1261

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
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
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $108B AUM 37.29% 1-Year Est. Return

Norges Bank's UPB Position: Q2 2026 in Review

Norges Bank opened a new position in Upstream Bio Inc (UPB) in Q2 2026: 3,768,619 shares worth $26.1M. The stake represents ﹤0.01% of the portfolio and ranks #1175 among its holdings. This is a return to the name: Norges Bank previously reported a position in UPB as recently as Q4 2025.

Norges Bank first reported a position in UPB in Q4 2024 and has held it in 5 quarters since. The position peaked at $78.3M in Q4 2025. 149 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

  • Norges Bank held 3,768,619 shares of Upstream Bio Inc worth $26.1M as of Q2 2026.
  • Upstream Bio Inc was a new Norges Bank position in Q2 2026.
  • Upstream Bio Inc made up ﹤0.01% of Norges Bank's portfolio in Q2 2026, its #1175 holding.
  • Norges Bank first reported a position in Upstream Bio Inc in Q4 2024 and has held it in 5 quarters since.
  • Norges Bank's Upstream Bio Inc position peaked at $78.3M in Q4 2025.
  • 149 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on Norges Bank's 13F filing for Q2 2026, filed 12 Aug 2026.