BlackRock
UPB

BlackRock’s Upstream Bio, Inc. Common Stock UPB Stock Holding History

BlackRock’s Portfolio UPB Stock Details UPB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Shares
Change % 		Capital Flow Portfolio Weight Portfolio Position
2025
Q2 		$23M Buy
2,096,506
+910,738
+77% +$10M ﹤0.01% 2894
2025
Q1 		$7.26M Buy
1,185,768
+67,968
+6% +$416K ﹤0.01% 3439
2024
Q4 		$18.4M Buy
+1,117,800
New +$18.4M ﹤0.01% 3060