Allegro MicroSystems, Inc.

Historical 13F Holders

Symbol
ALGM
CUSIP
01749D105
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 01749D105 since 12/18/2024, largest first.

Filer % of Class Filed
Invesco Ltd. 13G 7.3% 8/13/2026
Event 6/30/2026
Capital Research Global Investors 13G/A 7.1% 2/12/2026
Event 12/31/2025
BlackRock, Inc. 13G/A 6.9% 7/27/2026
Event 6/30/2026
JPMorgan Chase & Co 13G 6.8% 7/16/2026
Event 6/30/2026
FMR LLC 13G/A
5.3% 10/7/2026
Event 9/30/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (1)
Vanguard Group Inc 13G/A 0% 3/26/2026
Event 3/13/2026

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 12 17.0 k $620 k
2026 Q2 397 158 M $10.4 B
2026 Q1 336 138 M $4.32 B
2025 Q4 322 137 M $3.61 B
2025 Q3 324 144 M $4.19 B
2025 Q2 314 147 M $5.02 B
2025 Q1 325 158 M $3.98 B
2024 Q4 285 142 M $3.11 B
2024 Q3 282 154 M $3.58 B
2024 Q2 296 118 M $3.35 B
2024 Q1 313 117 M $3.14 B
2023 Q4 324 103 M $3.11 B
2023 Q3 340 99.3 M $3.01 B
2023 Q2 377 99.2 M $4.47 B
2023 Q1 339 98.4 M $4.72 B
2022 Q4 234 99.4 M $2.99 B
2022 Q3 180 90.5 M $1.98 B
2022 Q2 183 88.5 M $1.83 B
2022 Q1 182 89.2 M $2.54 B
2021 Q4 173 88.0 M $3.18 B
2021 Q3 158 84.7 M $2.71 B
2021 Q2 133 80.0 M $2.22 B
2021 Q1 129 78.0 M $1.98 B
2020 Q4 99 75.3 M $825 M