Summary by Moomoo AI
State Street Corporation and its subsidiary SSGA Funds Management, Inc. have filed an amended Schedule 13G with the United States Securities and Exchange Commission on December 31, 2023, indicating a significant ownership stake in bluebird bio, Inc. According to the filing, State Street Corporation has shared voting power over 13,756,321 shares and shared dispositive power over 13,865,719 shares. SSGA Funds Management, Inc. reports shared voting power over 11,895,595 shares and shared dispositive power over 11,909,995 shares, representing 6.26% of the class. The filing asserts that the shares were acquired in the ordinary course of business and not for the purpose of changing or influencing the control of bluebird bio, Inc.