Allegro MicrosystemsALGM
13F holders, Q3 2025 (September 30)296holders +23
66new positions
42sold out
5famous investors
$29.20avg. 13F price*
At the end of Q3 2025, 296 institutions reported holding Allegro Microsystems Inc. (ALGM) in their 13F filings, up 23 from Q2 2025. 66 opened new positions and 42 sold out. The largest holders were FMR LLC ($802.1M), Capital Research Global Investors ($491.3M) and Vanguard Group Inc. ($417.4M). 5 famous investors held it, including Steve Cohen (0.1% of Point72 Asset Management's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Joel Greenblatt (0.0% of Gotham Asset Management's portfolio).
- Company
- Allegro Microsystems Inc.
- CUSIP
- 01749D105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 66 | $77.0M |
| Exits | 42 | $78.5M |
All 13F filers, Q2 2025 → Q3 2025: 6,844,011 shares bought and 15,555,685 shares sold, net −8,711,674 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 296 holders
| FMR LLC | 0.04% | Add +0.8% | 27,467,843 | $802.1M |
| Capital Research Global Investors | 0.09% | Add +5.8% | 16,824,722 | $491.3M |
| Vanguard Group Inc. | 0.01% | Add +0.6% | 14,293,465 | $417.4M |
| BlackRock, Inc. | 0.01% | Reduce -3.5% | 11,377,418 | $332.2M |
| JPMorgan Chase & Co. | 0.01% | Reduce -3.5% | 7,731,267 | $225.8M |
| Invesco Ltd. | 0.02% | Reduce -15.1% | 5,312,427 | $155.1M |
| State Street Corp. | 0.01% | Add +1.7% | 5,281,285 | $154.2M |
| Clearbridge Investments, LLC | 0.06% | Reduce -7.3% | 2,932,806 | $85.6M |
| Alliancebernstein L.P. | 0.02% | Reduce -2.5% | 2,690,496 | $78.6M |
| Geode Capital Management, LLC | 0.00% | Reduce -1.5% | 2,369,129 | $69.2M |
| Macquarie Group Ltd. | 0.07% | Reduce -14.8% | 2,197,274 | $64.2M |
| Dimensional Fund Advisors LP | 0.01% | Reduce -6.5% | 1,970,550 | $57.5M |
| Morgan Stanley | 0.00% | Reduce -6.6% | 1,939,029 | $56.6M |
| Principal Financial Group Inc. | 0.03% | Reduce -11.3% | 1,914,074 | $55.9M |
| Adage Capital Partners Gp, L.L.C. | 0.07% | Reduce -27.6% | 1,576,627 | $46.0M |
| Segall Bryant & Hamill, LLC | 0.52% | Reduce -0.3% | 1,323,726 | $38.7M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +4.5% | 1,294,993 | $37.8M |
| Analog Century Management LP | 1.84% | Reduce -14.3% | 1,174,953 | $34.3M |
| Wellington Management Group LLP | 0.01% | Reduce -56.0% | 1,160,917 | $33.9M |
| T. Rowe Price Investment Management, Inc. | 0.02% | Reduce -15.7% | 1,085,198 | $31.7M |
| Northern Trust Corp. | 0.00% | Reduce -4.5% | 1,010,857 | $29.5M |
| Point72 Asset Management | 0.07% | Add +235.0% | 986,800 | $28.8M |
| Bank of America Corp. | 0.00% | Add +107.7% | 952,679 | $27.8M |
| Voya Investment Management LLC | 0.03% | Add +31.5% | 942,076 | $27.5M |
| Raymond James Financial Inc. | 0.01% | Reduce -26.2% | 926,358 | $27.0M |
| Frontier Capital Management Co. LLC | 0.23% | Reduce -62.1% | 895,797 | $26.2M |
| Millennium Management | 0.02% | Add +18.1% | 802,626 | $23.4M |
| Loomis Sayles & Co. L P | 0.03% | Add +20.4% | 802,023 | $23.4M |
| Bank of New York Mellon Corp | 0.00% | Reduce -23.9% | 793,515 | $23.2M |
| Silvercrest Asset Management Group LLC | 0.13% | Reduce -0.8% | 685,061 | $20.0M |
| GW&K Investment Management, LLC | 0.18% | Reduce -3.0% | 683,505 | $20.0M |
| Royal Bank of Canada | 0.00% | Reduce -24.3% | 642,474 | $18.8M |
| UBS Group AG | 0.00% | Reduce -12.2% | 579,278 | $16.9M |
| First Trust Advisors LP | 0.01% | Reduce -4.3% | 551,593 | $16.1M |
| Balyasny Asset Management L.P. | 0.03% | Reduce -66.2% | 498,331 | $14.6M |
| S Squared Technology, LLC | 4.41% | No change | 397,451 | $11.6M |
| Allspring Global Investments Holdings, LLC | 0.02% | Reduce -7.9% | 360,186 | $10.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +45.4% | 345,346 | $10.1M |
| Squarepoint Ops LLC | 0.02% | New | 339,926 | $9.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -30.2% | 337,478 | $9.9M |
| Citadel Advisors | 0.01% | Reduce -78.2% | 331,631 | $9.7M |
| Ameriprise Financial Inc. | 0.00% | Reduce -21.6% | 326,922 | $9.5M |
| Rhumbline Advisers | 0.01% | Reduce -5.1% | 312,924 | $9.1M |
| Peregrine Capital Management LLC | 0.24% | Add +16.8% | 274,477 | $8.0M |
| Cubist Systematic Strategies, LLC | 0.11% | New | 273,675 | $8.0M |
| Swiss National Bank | 0.00% | Add +1.9% | 250,900 | $7.3M |
| AQR Capital Management | 0.00% | Add +1107.9% | 250,384 | $7.3M |
| Neuberger Berman Group LLC | 0.01% | Reduce -80.0% | 249,564 | $7.3M |
| Nuveen, LLC | 0.00% | Reduce -1.5% | 241,927 | $7.1M |
| Pier Capital, LLC | 1.07% | Reduce -10.3% | 235,118 | $6.9M |
| Man Group plc | 0.01% | New | 215,287 | $6.3M |
| Jane Street Group, LLC | 0.01% | New | 210,348 | $6.1M |
| Legal & General Group Plc | 0.00% | Reduce -2.7% | 196,977 | $5.8M |
| Retirement Systems of Alabama | 0.02% | Reduce -4.9% | 190,895 | $5.6M |
| Trexquant Investment LP | 0.06% | New | 189,448 | $5.5M |
| Trillium Asset Management, LLC | 0.13% | Reduce -46.4% | 166,544 | $4.9M |
| Two Sigma Investments, LP | 0.01% | Reduce -53.5% | 161,348 | $4.7M |
| Wells Fargo & Company | 0.00% | Reduce -8.4% | 151,563 | $4.4M |
| Barclays PLC | 0.00% | Add +28.3% | 151,025 | $4.4M |
| ArrowMark Colorado Holdings LLC | 0.08% | Reduce -34.2% | 149,649 | $4.4M |
| BNP Paribas Financial Markets | 0.00% | Add +672.4% | 144,571 | $4.2M |
| Marshall Wace, LLP | 0.00% | New | 138,086 | $4.0M |
| Castleark Management LLC | 0.11% | Add +29.4% | 133,508 | $3.9M |
| Susquehanna International Group, LLP | 0.01% | Reduce -17.8% | 126,758 | $3.7M |
| Gotham Asset Management | 0.02% | Add +1390.9% | 124,488 | $3.6M |
| IMC-Chicago, LLC | 0.06% | New | 122,837 | $3.6M |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 118,744 | $3.5M |
| Susquehanna Portfolio Strategies, LLC | 0.05% | No change | 115,830 | $3.4M |
| State of Wisconsin Investment Board | 0.01% | Reduce -4.1% | 111,839 | $3.3M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -9.4% | 105,967 | $3.1M |
| Royce & Associates LP | 0.03% | New | 102,230 | $3.0M |
| Point72 Hong Kong Ltd | 0.13% | New | 98,300 | $2.9M |
| T. Rowe Price Associates Inc. | 0.00% | Add +8.2% | 96,630 | $2.8M |
| State Board of Administration of Florida Retirement System | 0.00% | Add +9.7% | 92,797 | $2.7M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -39.2% | 90,592 | $2.6M |
| Jain Global LLC | 0.04% | Add +9.9% | 89,935 | $2.6M |
| Candriam S.C.A. | 0.01% | New | 89,175 | $2.6M |
| Sei Investments Co. | 0.00% | Add +2.1% | 88,128 | $2.6M |
| HSBC Holdings PLC | 0.00% | Add +128.9% | 86,851 | $2.5M |
| State of Tennessee, Department of Treasury | 0.01% | Reduce -7.2% | 86,631 | $2.5M |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -9.6% | 84,637 | $2.5M |
| Summit Trail Advisors, LLC | 0.03% | Add +613.2% | 82,233 | $2.4M |
| Schonfeld Strategic Advisors LLC | 0.02% | Reduce -81.5% | 80,465 | $2.3M |
| Schroder Investment Management Group | 0.00% | New | 75,401 | $2.2M |
| Paloma Partners Management Co | 1.00% | New | 75,000 | $2.2M |
| HRT Financial LP | 0.01% | Reduce -43.1% | 74,395 | $2.2M |
| Quantbot Technologies LP | 0.06% | Add +317.4% | 71,708 | $2.1M |
| Engineers Gate Manager LP | 0.02% | New | 69,166 | $2.0M |
| State of New Jersey Common Pension Fund D | 0.01% | Reduce -5.2% | 68,882 | $2.0M |
| MetLife Investment Management, LLC | 0.01% | Reduce -9.3% | 63,706 | $1.9M |
| Caption Management, LLC | 0.11% | Add +319.8% | 62,974 | $1.8M |
| Van Eck Associates Corp. | 0.00% | Add +103.6% | 60,707 | $1.8M |
| Quantinno Capital Management LP | 0.00% | Add +24.8% | 58,578 | $1.7M |
| Janus Henderson Group PLC | 0.00% | No change | 57,329 | $1.7M |
| Mutual of America Capital Management LLC | 0.02% | Reduce -11.9% | 57,256 | $1.7M |
| Amalgamated Bank | 0.01% | Reduce -4.2% | 56,767 | $1.7M |
| Kennedy Capital Management LLC | 0.04% | Reduce -22.9% | 56,613 | $1.7M |
| Treasurer of the State of North Carolina | 0.01% | Reduce -3.7% | 55,337 | $1.6M |
| Police & Firemen's Retirement System of New Jersey | 0.01% | Add +17.9% | 54,082 | $1.6M |
| Occudo Quantitative Strategies LP | 0.19% | Add +173.0% | 53,934 | $1.6M |
"% of holder's portfolio" is ALGM's weight in each manager's 13F, not the share of Allegro Microsystems Inc. the manager owns.