Schedule 13G

ALGM Schedule 13G filing by JPMorgan Chase / Asset Management

JPMorgan Chase / Asset Management reported beneficial ownership of 12.7M shares, representing 12% of ALLEGRO MICROSYSTEMS, INC. in this filing.

FiledJul 16, 2026

Ownership dateJun 30, 2026

Reported shares12.7M

Reported ownership12%

Ownership details

Voting and dispositive power reported in the filing

These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.

Sole voting power 12.2M

Shared voting power 12.7M

Sole dispositive power 12.7M

Shared dispositive power 12.7M

Price context

Price dates alongside the ownership filing

Price data provides market context around the disclosure. It does not identify the filer’s actual transaction price.

Close near filing date$47.12as of Jul 16, 2026

Latest tracked price$42.01as of Aug 5, 2026

Source

Original filing and accession

Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.

Reporting filer: JPMorgan Chase / Asset Management
CIK: CIK0000019617
Accession: 0000019617-26-000253
Form: Schedule 13G

Open SEC filing View ALGM ownership history

Read the filing in context

Understand what a Schedule 13 filing does—and does not—tell you.

How to read a Schedule 13G → Does a 13G mean the shares were just bought? → Filing date vs. ownership date →