ET
UPB

Entropy Technologies’s Upstream Bio Inc UPB Stock Holding History

Entropy Technologies’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 		$121K Sell
17,542
-5,794
-25% -$48.5K ﹤0.01% 920
2026
Q1 		$210K Buy
+23,336
New +$420K 0.01% 791

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

Entropy Technologies's UPB Position: Q2 2026 in Review

Entropy Technologies reduced its Upstream Bio Inc (UPB) stake by 25% in Q2 2026, selling an estimated $48.5K and leaving 17,542 shares worth $121K. The position accounts for ﹤0.01% of the portfolio, ranked #920.

Entropy Technologies first reported a position in UPB in Q1 2026 and has held it in 2 quarters since. The position peaked at $210K in Q1 2026. 148 funds tracked by Wall St. Rank hold UPB as of Q2 2026.

  • Entropy Technologies held 17,542 shares of Upstream Bio Inc worth $121K as of Q2 2026.
  • Entropy Technologies sold 5,794 Upstream Bio Inc shares in Q2 2026, an estimated $48.5K.
  • Upstream Bio Inc made up ﹤0.01% of Entropy Technologies's portfolio in Q2 2026, its #920 holding.
  • Entropy Technologies first reported a position in Upstream Bio Inc in Q1 2026 and has held it in 2 quarters since.
  • Entropy Technologies's Upstream Bio Inc position peaked at $210K in Q1 2026.
  • 148 funds tracked by Wall St. Rank held Upstream Bio Inc as of Q2 2026.

Based on Entropy Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.