Institutional Ownership
Allegro Microsystems Inc
CUSIP 01749D105COMALGMQ1 2026
13D / 13G Filings
22
Schedule 13D/13G on record
Beneficial Filers
8
Distinct reporting persons
Largest Stake
54.7%
Max % of class reported
Institutional Holders
310
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
22 filings · latest Feb 12, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 12, 2026 | Capital Research Global Investors | 13G/A | 7.1% | 13.11M | SEC |
| 2 | Feb 5, 2026 | Fmr LLC | 13G/A | 12.8% | 23.64M | SEC |
| 3 | Aug 13, 2025 | Capital Research Global Investors | 13G/A | 8.6% | 15.90M | SEC |
| 4 | May 13, 2025 | Capital Research Global Investors | 13G | 6.0% | 11.06M | SEC |
| 5 | May 12, 2025 | Fmr LLC | 13G/A | 14.6% | 26.92M | SEC |
| 6 | Apr 15, 2025 | Jpmorgan Chase &Amp; Co. | 13G/A | 4.8% | 9.00M | SEC |
| 7 | Feb 12, 2025 | Fmr LLC | 13G/A | 12.4% | 22.77M | SEC |
| 8 | Nov 12, 2024 | Vanguard Group Inc | 13G/A | 7.6% | 14.72M | SEC |
| 9 | Nov 12, 2024 | Fmr LLC | 13G/A | 14.6% | — | SEC |
| 10 | Nov 8, 2024 | Blackrock, Inc. | 13G | 5.8% | 12.84M | SEC |
12 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Allegro Microsystems Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Fmr LLC | 27.42M | $864.59M |
| 2 | Blackrock, Inc. | 12.49M | $393.96M |
| 3 | Capital Research Global Investors | 12.44M | $392.09M |
| 4 | Invesco Ltd. | 8.75M | $275.93M |
| 5 | Jpmorgan Chase & Co | 8.65M | $242.60M |
| 6 | State Street Corp | 5.23M | $164.84M |
| 7 | Clearbridge Investments, LLC | 2.86M | $90.29M |
| 8 | Geode Capital Management, LLC | 2.46M | $77.48M |
| 9 | Morgan Stanley | 2.28M | $71.74M |
| 10 | Dimensional Fund Advisors LP | 2.17M | $68.40M |