FMR LLC (ALGM) reports 13.7% Allegro MicroSystems ownership in amended 13G
FMR LLC and Abigail P. Johnson filed an amended Schedule 13G (Amendment No. 7) for Allegro MicroSystems, Inc. as of June 30, 2026. FMR LLC reported beneficial ownership of 25,581,021.49 shares, 13.7% of outstanding common stock, with sole dispositive power. Select Semiconductors Portfolio was also disclosed at 16,739,387 shares, 9.0%.
How this was made
The 30-second read
Why it matters
Beneficial ownership at 13.7% with sole dispositive power can matter for perceived influence, but the text does not describe any new stake acquisition, control intent, or corporate event.
Market read
Traders may monitor for follow-on filings or activism signals, but this specific article mainly updates ownership reporting.
What to watch
The filing mentions other holders (e.g., Select Semiconductors Portfolio) but provides no change in their stakes or any intent to influence corporate actions, limiting tradable conclusions.
Background
The article summarizes an amended SEC Schedule 13G/A disclosure of beneficial ownership for Allegro MicroSystems, filed by FMR LLC and Abigail P. Johnson.
Ticker impact
FMR LLC and Abigail P. Johnson filed an amended Schedule 13G showing 13.7% beneficial ownership of Allegro MicroSystems as of June 30, 2026.
Low near-term impact; any reaction would likely be sentiment-driven around ownership/control rather than fundamentals.
The filing discloses beneficial ownership and voting/dispositive power, with no accompanying transaction, guidance, or corporate action described.
Market effects
Minor read-through for semiconductor ownership concentration, but no sector-wide catalyst is provided.
None indicated; the disclosure is US SEC filing related.
None indicated; no cross-border transaction or global regulatory action is described.
Counterpoint
A 13G/A can reflect routine rebalancing or reporting updates rather than a change in investment thesis, so price impact may be overstated.
Key entities
- issuerALLEGRO MICROSYSTEMS INC
Subject of the amended Schedule 13G/A ownership disclosure.
- reporting_personFMR LLC
Reports 25,581,021.49 shares, 13.7% beneficial ownership, sole dispositive power.
- reporting_personAbigail P. Johnson
Reports the same 25,581,021.49 shares, 13.7% beneficial ownership, sole dispositive power.
- other_holderSelect Semiconductors Portfolio
Mentioned as having 16,739,387 shares, 9.0% of outstanding common stock as of June 30, 2026.
