Historical shareholding details of AllianceBernstein L.P. holdings in Upstream Bio Inc. (UPB)

Monthly changes of AllianceBernstein L.P. shareholding in Upstream Bio Inc. over the previous months

Month Name Total no. shares held Percent Holding
Mar 31, 2025 Alliancebernstein L.P. 644,063 1.20%
Feb 28, 2025 Alliancebernstein L.P. 644,063 1.20%
Jan 31, 2025 Alliancebernstein L.P. 666,484 1.24%
Dec 31, 2024 Alliancebernstein L.P. 1,111,337 2.07%
Dec 31, 2024 Alliancebernstein L.P. 593,995 1.11%
Nov 30, 2024 Alliancebernstein L.P. 607,791 1.13%

View all ownership details of Upstream Bio Inc.