ALLEGRO MICROSYSTEMS INC COM is a security (CUSIP 01749D105) tracked across SEC portfolio filings. 355 institutional managers reported $4.1B on Form 13F as of 2026-06-30; 38 registered fund positions totaling $992.2M via N-PORT as of 2026-05-31.
Showing 15 of 355 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| FMR LLC | BOSTON, MA | $864.6M | 27,421,206 |
| BlackRock, Inc. | New York, NY | $394.0M | 12,494,868 |
| Capital Research Global Investors | Los Angeles, CA | $392.1M | 12,435,558 |
| VANGUARD GROUP INC | Valley Forge, PA | $374.7M | 14,202,528 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $242.6M | 8,652,068 |
| STATE STREET CORP | BOSTON, MA | $164.8M | 5,228,104 |
| PRINCIPAL FINANCIAL GROUP INC | DES MOINES, IA | $103.7M | 1,489,791 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Boston, MA | $100.5M | 1,443,495 |
| Clearbridge Investments, LLC | New York, NY | $90.3M | 2,863,710 |
| GEODE CAPITAL MANAGEMENT, LLC | BOSTON, MA | $77.5M | 2,456,820 |
| MORGAN STANLEY | NEW YORK, NY | $71.7M | 2,275,285 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $68.4M | 2,170,487 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | PHILADELPHIA, PA | $65.6M | 2,080,641 |
| LOOMIS SAYLES & CO L P | BOSTON, MA | $52.8M | 1,674,108 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Boston, MA | $46.2M | 1,464,737 |
Showing 15 of 38 fund positions by value.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| Capital World Growth & Income Fund | Capital World Growth & Income Fund | $283.7M | 17.77% |
| Invesco Small Cap Value Fund | AIM Sector Funds (Invesco Sector Funds) | $215.3M | 200.23% |
| SMALLCAP World Fund Inc | SMALLCAP World Fund Inc | $178.2M | 21.98% |
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $118.0M | 48.73% |
| VANGUARD EXPLORER FUND | VANGUARD EXPLORER FUND | $62.3M | 28.60% |
| VANGUARD EXTENDED MARKET INDEX FUND | VANGUARD INDEX FUNDS | $43.6M | 5.36% |
| Fidelity Growth Company Fund | Fidelity Mt. Vernon Street Trust | $26.8M | 2.72% |
| LORD ABBETT DEVELOPING GROWTH FUND INC | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $18.5M | 83.44% |
| Fidelity Advisor Stock Selector Mid Cap Fund | Fidelity Advisor Series I | $12.4M | 48.85% |
| T. Rowe Price Small-Cap Value Fund, Inc. | T. ROWE PRICE SMALL-CAP VALUE FUND, INC. | $6.5M | 7.06% |
| Optimum Small-Mid Cap Growth Fund | Optimum Fund Trust | $4.7M | 62.40% |
| Columbia Mid Cap Index Fund | COLUMBIA FUNDS SERIES TRUST | $4.2M | 16.70% |
| TAX MANAGED SMALL CAP PORTFOLIO | Tax-Managed Small-Cap Portfolio | $3.6M | 195.13% |
| U.S. MICRO CAP PORTFOLIO | DFA INVESTMENT DIMENSIONS GROUP INC | $3.2M | 4.31% |
| VOYA SMALLCAP OPPORTUNITIES PORTFOLIO | Voya Variable Products Trust | $2.8M | 164.96% |