Allegro Microsystems, INC Schedule 13G passive stakes

Filed when an investor crosses five percent without intending to seek control — the passive counterpart to a 13D.

NASDAQ
Invesco Ltd. has disclosed a beneficial ownership of 13,678,393 shares, representing 7.3% of the common stock of Allegro MicroSystems Inc.
NASDAQ
FMR LLC and Abigail P. Johnson have reported a combined beneficial ownership of 13.7% in Allegro Microsystems Inc. as of June 30, 2026.
NASDAQ
JPMorgan Chase & Co. has reported a beneficial ownership of 6.8% in Allegro Microsystems, Inc., holding over 12.7 million shares.
NASDAQ
FMR LLC and Abigail P. Johnson have reported beneficial ownership of 14.8% of Allegro Microsystems Inc.'s common stock as of March 31, 2026.
NASDAQ
The Vanguard Group has amended its Schedule 13G for Allegro MicroSystems Inc., reporting 0% beneficial ownership following an internal realignment where subsidiaries will now report separately.
NASDAQ
FMR LLC and its affiliates, including Abigail P. Johnson, reported a beneficial ownership of 12.8% in Allegro Microsystems Inc. common stock as of December 31, 2025.
NASDAQ
Capital Research Global Investors has filed an amended Schedule 13G, reporting an 8.6% beneficial ownership stake in Allegro MicroSystems, Inc.
NASDAQ
Capital Research Global Investors has filed a Schedule 13G, reporting a 6.0% beneficial ownership stake in Allegro MicroSystems, Inc.'s common stock as of March 31, 2025.
NASDAQ
FMR LLC and its affiliates, along with Abigail P. Johnson, have filed an Amendment No. 4 to Schedule 13G, reporting continued beneficial ownership of 14.6% of Allegro MicroSystems Inc.'s common stock as of March 31, 2025.
NASDAQ
JPMorgan Chase & Co. has filed an amended Schedule 13G, revealing a 4.8% beneficial ownership stake in Allegro MicroSystems, Inc. as of March 31, 2025.
NASDAQ
FMR LLC and its affiliates, along with Abigail P. Johnson, have filed an amended Schedule 13G, disclosing a combined beneficial ownership of 12.4% of Allegro Microsystems Inc.'s common stock as of December 31, 2024.