Allegro MicrosystemsALGM
13F holders, Q4 2025 (December 31)294holders −2
48new positions
50sold out
8famous investors
$26.39avg. 13F price*
At the end of Q4 2025, 294 institutions reported holding Allegro Microsystems Inc. (ALGM) in their 13F filings, down 2 from Q3 2025. 48 opened new positions and 50 sold out. The largest holders were FMR LLC ($623.5M), Vanguard Group Inc. ($374.7M) and Capital Research Global Investors ($345.9M). 8 famous investors held it, including Steve Cohen (0.0% of Point72 Asset Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Allegro Microsystems Inc.
- CUSIP
- 01749D105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 48 | $65.8M |
| Exits | 50 | $98.8M |
All 13F filers, Q3 2025 → Q4 2025: 14,425,819 shares bought and 16,892,232 shares sold, net −2,466,413 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 294 holders
| FMR LLC | 0.03% | Reduce -13.9% | 23,635,746 | $623.5M |
| Vanguard Group Inc. | 0.01% | Reduce -0.6% | 14,202,528 | $374.7M |
| Capital Research Global Investors | 0.06% | Reduce -22.1% | 13,111,292 | $345.9M |
| BlackRock, Inc. | 0.01% | Add +7.2% | 12,201,457 | $321.9M |
| Invesco Ltd. | 0.02% | Add +44.0% | 7,651,051 | $201.8M |
| JPMorgan Chase & Co. | 0.01% | Reduce -5.0% | 7,347,422 | $193.8M |
| State Street Corp. | 0.00% | Add +1.5% | 5,359,488 | $141.4M |
| Clearbridge Investments, LLC | 0.06% | Reduce -0.6% | 2,916,785 | $76.9M |
| Adage Capital Partners Gp, L.L.C. | 0.11% | Add +77.8% | 2,803,944 | $74.0M |
| Citadel Advisors | 0.05% | Add +672.1% | 2,560,520 | $67.5M |
| Geode Capital Management, LLC | 0.00% | Add +1.1% | 2,393,968 | $63.2M |
| Morgan Stanley | 0.00% | Add +15.2% | 2,233,136 | $58.9M |
| Dimensional Fund Advisors LP | 0.01% | Add +8.6% | 2,140,147 | $56.5M |
| Nomura Asset Management International Inc. | 0.08% | — | 2,036,212 | $53.7M |
| Analog Century Management LP | 2.45% | Add +60.9% | 1,890,072 | $49.9M |
| Principal Financial Group Inc. | 0.02% | Reduce -9.0% | 1,742,296 | $46.0M |
| Norges Bank | 0.00% | — | 1,457,805 | $38.5M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +5.2% | 1,362,418 | $35.9M |
| Millennium Management | 0.03% | Add +67.2% | 1,341,739 | $35.4M |
| Segall Bryant & Hamill, LLC | 0.45% | Reduce -5.7% | 1,248,310 | $32.9M |
| Alliancebernstein L.P. | 0.01% | Reduce -57.3% | 1,148,652 | $30.3M |
| Point72 Asset Management | 0.05% | Add +13.4% | 1,119,265 | $29.5M |
| Wellington Management Group LLP | 0.01% | Reduce -4.7% | 1,106,337 | $29.2M |
| Northern Trust Corp. | 0.00% | Add +0.4% | 1,014,999 | $26.8M |
| Voya Investment Management LLC | 0.03% | Reduce -0.2% | 940,358 | $24.8M |
| Raymond James Financial Inc. | 0.01% | Reduce -1.9% | 908,441 | $24.0M |
| Loomis Sayles & Co. L P | 0.03% | Add +3.4% | 829,239 | $21.9M |
| Balyasny Asset Management L.P. | 0.04% | Add +62.6% | 810,460 | $21.4M |
| Goldman Sachs Group Inc. | 0.00% | Add +130.6% | 796,329 | $21.0M |
| Schonfeld Strategic Advisors LLC | 0.10% | Add +838.1% | 754,824 | $19.9M |
| Bank of New York Mellon Corp | 0.00% | Reduce -5.4% | 750,586 | $19.8M |
| Marshall Wace, LLP | 0.02% | Add +417.5% | 714,579 | $18.9M |
| Silvercrest Asset Management Group LLC | 0.12% | Reduce -1.4% | 675,703 | $17.8M |
| GW&K Investment Management, LLC | 0.15% | Reduce -2.1% | 669,146 | $17.7M |
| Bank of America Corp. | 0.00% | Reduce -39.5% | 576,655 | $15.2M |
| Talos Eurisko Asset Management LP | 2.62% | New | 560,200 | $14.8M |
| Frontier Capital Management Co. LLC | 0.15% | Reduce -41.4% | 524,931 | $13.8M |
| S Squared Technology, LLC | 4.67% | Add +15.1% | 457,451 | $12.1M |
| First Trust Advisors LP | 0.01% | Reduce -18.6% | 448,980 | $11.8M |
| Renaissance Technologies | 0.02% | New | 436,200 | $11.5M |
| Engineers Gate Manager LP | 0.13% | Add +506.7% | 419,600 | $11.1M |
| Alyeska Investment Group, L.P. | 0.03% | New | 400,000 | $10.6M |
| Man Group plc | 0.02% | Add +79.8% | 387,105 | $10.2M |
| Ameriprise Financial Inc. | 0.00% | Add +14.2% | 373,490 | $9.9M |
| Allspring Global Investments Holdings, LLC | 0.02% | Reduce -1.1% | 356,026 | $9.6M |
| Lightrock Netherlands B.V. | 1.94% | New | 354,390 | $9.3M |
| Squarepoint Ops LLC | 0.02% | Add +4.1% | 353,991 | $9.3M |
| T. Rowe Price Investment Management, Inc. | 0.01% | Reduce -67.8% | 349,349 | $9.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -2.0% | 330,709 | $8.7M |
| AQR Capital Management | 0.00% | Add +31.0% | 327,973 | $8.7M |
| Two Sigma Investments, LP | 0.01% | Add +92.7% | 310,925 | $8.2M |
| Rhumbline Advisers | 0.01% | Reduce -4.1% | 300,215 | $7.9M |
| UBS Group AG | 0.00% | Reduce -52.6% | 274,299 | $7.2M |
| Peregrine Capital Management LLC | 0.22% | Reduce -1.3% | 270,888 | $7.1M |
| Swiss National Bank | 0.00% | Add +1.8% | 255,400 | $6.7M |
| Nuveen, LLC | 0.00% | No change | 241,927 | $6.4M |
| Pier Capital, LLC | 0.97% | Reduce -1.7% | 231,184 | $6.1M |
| BNP Paribas Financial Markets | 0.00% | Add +37.5% | 198,785 | $5.2M |
| Retirement Systems of Alabama | 0.02% | Reduce -0.5% | 189,855 | $5.0M |
| Legal & General Group Plc | 0.00% | Reduce -5.8% | 185,648 | $4.9M |
| Jane Street Group, LLC | 0.01% | Reduce -13.9% | 181,178 | $4.8M |
| Trillium Asset Management, LLC | 0.11% | Reduce -18.3% | 136,021 | $3.7M |
| ArrowMark Colorado Holdings LLC | 0.08% | Reduce -6.6% | 139,761 | $3.7M |
| Susquehanna International Group, LLP | 0.00% | Add +5.9% | 134,280 | $3.5M |
| California State Teachers Retirement System | 0.00% | Add +3.6% | 122,998 | $3.2M |
| Neuberger Berman Group LLC | 0.00% | Reduce -52.0% | 119,741 | $3.2M |
| State of Tennessee, Department of Treasury | 0.01% | Reduce -8.5% | 79,237 | $2.9M |
| Citigroup Inc. | 0.00% | New | 106,301 | $2.8M |
| T. Rowe Price Associates Inc. | 0.00% | Add +4.9% | 101,366 | $2.7M |
| State of Wisconsin Investment Board | 0.01% | Reduce -12.7% | 97,609 | $2.6M |
| Sei Investments Co. | 0.00% | Add +10.0% | 96,911 | $2.6M |
| State of New Jersey Common Pension Fund D | 0.01% | Add +34.9% | 92,928 | $2.5M |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 92,797 | $2.4M |
| Summit Trail Advisors, LLC | 0.04% | Add +12.5% | 92,506 | $2.4M |
| HRT Financial LP | 0.01% | Add +21.4% | 90,344 | $2.4M |
| Granahan Investment Management, LLC | 0.10% | New | 89,857 | $2.4M |
| Barclays PLC | 0.00% | Reduce -41.5% | 88,300 | $2.3M |
| Candriam S.C.A. | 0.01% | Reduce -1.4% | 87,888 | $2.3M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -7.5% | 83,810 | $2.2M |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -2.8% | 82,250 | $2.2M |
| Massachusetts Financial Services Co. | 0.00% | Add +98.5% | 80,157 | $2.1M |
| Trexquant Investment LP | 0.02% | Reduce -58.0% | 79,486 | $2.1M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -29.8% | 74,366 | $2.0M |
| Gotham Asset Management | 0.01% | Reduce -41.3% | 73,093 | $1.9M |
| Two Sigma Advisers, LP | 0.00% | Add +556.5% | 70,900 | $1.9M |
| Wells Fargo & Company | 0.00% | Reduce -56.9% | 65,373 | $1.7M |
| Quantinno Capital Management LP | 0.00% | Add +11.6% | 65,353 | $1.7M |
| Hel Ved Capital Management Ltd | 0.57% | New | 62,850 | $1.7M |
| MetLife Investment Management, LLC | 0.01% | Reduce -4.9% | 60,588 | $1.6M |
| Janus Henderson Group PLC | 0.00% | No change | 57,329 | $1.5M |
| Van Eck Associates Corp. | 0.00% | Reduce -8.6% | 55,496 | $1.5M |
| D. E. Shaw & Co. | 0.00% | New | 55,304 | $1.5M |
| Amalgamated Bank | 0.01% | Reduce -4.3% | 54,325 | $1.4M |
| Police & Firemen's Retirement System of New Jersey | 0.01% | Reduce -3.3% | 52,277 | $1.4M |
| Mutual of America Capital Management LLC | 0.01% | Reduce -9.8% | 51,618 | $1.4M |
| Treasurer of the State of North Carolina | 0.00% | Reduce -6.8% | 51,565 | $1.4M |
| New York State Common Retirement Fund | 0.00% | No change | 50,938 | $1.3M |
| Qube Research & Technologies Ltd | 0.00% | New | 48,097 | $1.3M |
| Yousif Capital Management, LLC | 0.01% | Reduce -1.2% | 38,286 | $1.3M |
| Guggenheim Capital LLC | 0.01% | Add +125.2% | 45,571 | $1.2M |
"% of holder's portfolio" is ALGM's weight in each manager's 13F, not the share of Allegro Microsystems Inc. the manager owns.