ALGM ALLEGRO MICROSYSTEMS, INC.: institutional ownership and insider trading
401 funds reported holding $10.7B of ALLEGRO MICROSYSTEMS, INC. in their latest 13F filings; in Q2 2026 funds net bought $730M, with 96 new positions and 39 funds selling out; over the last 12 months insiders bought $0 and sold $5.22M on the open market.
Famous investors holding ALGM
- Two Sigma (Two Sigma Investments): $24.2M, 0.0% of the portfolio
- Lee Ainslie (Maverick Capital): $703K, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $13.7M, 0.0% of the portfolio
Largest institutional holders of ALGM
- FMR LLC — $1.78B
- BlackRock, Inc. (BLK) — $967M
- Invesco Ltd. (IVZ) — $952M
- JPMORGAN CHASE & CO (JPM, AMJB, VYLD, JPM-PC, JPM-PD, JPM-PJ, JPM-PK, JPM-PL, JPM-PM) — $845M
- Capital Research Global Investors — $836M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $534M
- STATE STREET CORP (STT, STT-PG) — $395M
- VANGUARD CAPITAL MANAGEMENT LLC — $384M
- VANGUARD GROUP INC — $375M
- PRICE T ROWE ASSOCIATES INC /MD/ — $258M
Recent ALGM insider trades
- Aug 17, 2026: Raubacher Jennie sold 1,000 shares ($45.3K)
- Aug 10, 2026: Hagen Erin sold 2,285 shares ($101K)
- Jun 3, 2026: Madormo Richard sold 5,000 shares ($264K)
- May 22, 2026: Coleman Troy sold 4,500 shares ($206K)
Members of Congress trading ALGM
- Sep 29, 2026: Gilbert Ray Cisneros, Jr. bought $1.00K–$15.0K
- Oct 17, 2024: Josh Gottheimer bought $1.00K–$15.0K
- Sep 16, 2024: Josh Gottheimer sold $1.00K–$15.0K
- Jan 11, 2024: Josh Gottheimer bought $1.00K–$15.0K
- Dec 11, 2023: Josh Gottheimer sold part of $1.00K–$15.0K
5%+ owners
- Invesco Ltd.: 7.3% (Schedule 13G, filed Aug 13, 2026)
- BlackRock, Inc.: 6.9% (Schedule 13G/A, filed Jul 27, 2026)
- JPMORGAN CHASE & CO: 6.8% (Schedule 13G, filed Jul 16, 2026)
- FMR LLC: 5.3% (Schedule 13G/A, filed Oct 7, 2026)