XT
UPB

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

XTX Topco’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 		– Sell
-12,731
Closed -$77.9K – 3356
2025
Q1 		$77.9K Buy
+12,731
New +$77.9K ﹤0.01% 1918