Allegro MicrosystemsALGM
13F holders, Q1 2025 (March 31)291holders +35
66new positions
32sold out
3famous investors
$25.14avg. 13F price*
At the end of Q1 2025, 291 institutions reported holding Allegro Microsystems Inc. (ALGM) in their 13F filings, up 35 from Q4 2024. 66 opened new positions and 32 sold out. The largest holders were FMR LLC ($676.5M), Vanguard Group Inc. ($354.3M) and BlackRock, Inc. ($293.3M). 3 famous investors held it, including Ken Griffin (0.1% of Citadel Advisors's portfolio), Israel Englander (0.1% of Millennium Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Allegro Microsystems Inc.
- CUSIP
- 01749D105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 66 | $174.8M |
| Exits | 32 | $73.8M |
All 13F filers, Q4 2024 → Q1 2025: 36,366,153 shares bought and 20,792,906 shares sold, net +15,573,247 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 291 holders
| FMR LLC | 0.04% | Add +18.2% | 26,921,116 | $676.5M |
| Vanguard Group Inc. | 0.01% | Add +0.1% | 14,100,017 | $354.3M |
| BlackRock, Inc. | 0.01% | Reduce -0.7% | 11,671,558 | $293.3M |
| Capital Research Global Investors | 0.06% | Add +91.8% | 11,062,801 | $278.0M |
| JPMorgan Chase & Co. | 0.02% | Reduce -14.6% | 8,995,806 | $226.1M |
| State Street Corp. | 0.01% | Reduce -13.5% | 5,084,599 | $127.8M |
| Invesco Ltd. | 0.02% | Add +131.5% | 4,835,641 | $121.5M |
| Citadel Advisors | 0.11% | Add +175.1% | 4,333,613 | $108.9M |
| Wellington Management Group LLP | 0.02% | Reduce -18.6% | 3,248,890 | $81.6M |
| Clearbridge Investments, LLC | 0.07% | Reduce -6.6% | 3,161,587 | $79.5M |
| Frontier Capital Management Co. LLC | 0.80% | Add +3090.7% | 2,909,737 | $73.1M |
| Morgan Stanley | 0.00% | Reduce -0.3% | 2,648,371 | $66.6M |
| Macquarie Group Ltd. | 0.08% | Add +78.3% | 2,636,014 | $66.2M |
| Principal Financial Group Inc. | 0.03% | Add +6.4% | 2,416,102 | $60.7M |
| Millennium Management | 0.06% | Add +81.4% | 2,402,978 | $60.4M |
| Geode Capital Management, LLC | 0.00% | Add +1.0% | 2,388,084 | $60.0M |
| Balyasny Asset Management L.P. | 0.15% | Add +310.2% | 2,326,464 | $58.5M |
| Summit Partners Public Asset Management, LLC | 2.74% | Add +154.1% | 2,271,600 | $57.1M |
| Adage Capital Partners Gp, L.L.C. | 0.10% | Reduce -22.9% | 2,108,423 | $53.0M |
| Dimensional Fund Advisors LP | 0.01% | Add +14.5% | 1,968,079 | $49.5M |
| Analog Century Management LP | 3.93% | Reduce -3.5% | 1,932,170 | $48.6M |
| Kodai Capital Management LP | 1.65% | New | 1,655,806 | $41.6M |
| Freestone Grove Partners LP | 0.41% | Add +330.4% | 1,603,200 | $40.3M |
| UBS Group AG | 0.01% | Add +8.8% | 1,460,418 | $36.7M |
| Segall Bryant & Hamill, LLC | 0.51% | New | 1,311,526 | $33.0M |
| Bank of America Corp. | 0.00% | Add +281.0% | 1,293,235 | $32.5M |
| T. Rowe Price Investment Management, Inc. | 0.02% | Reduce -38.0% | 1,280,246 | $32.2M |
| Norges Bank | 0.00% | Add +2.8% | 1,266,048 | $31.8M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +2.8% | 1,166,915 | $29.3M |
| Northern Trust Corp. | 0.00% | Add +1.4% | 1,089,779 | $27.4M |
| GW&K Investment Management, LLC | 0.25% | Add +2.4% | 1,054,756 | $26.5M |
| Loomis Sayles & Co. L P | 0.04% | Add +19.1% | 1,040,582 | $26.1M |
| Schonfeld Strategic Advisors LLC | 0.18% | Reduce -36.1% | 1,036,364 | $26.0M |
| Bank of New York Mellon Corp | 0.01% | Reduce -6.0% | 996,573 | $25.0M |
| Raymond James Financial Inc. | 0.01% | Add +43.4% | 993,340 | $25.0M |
| Alliancebernstein L.P. | 0.01% | Add +80.6% | 953,689 | $24.0M |
| Cinctive Capital Management LP | 1.89% | New | 942,702 | $23.7M |
| Paloma Partners Management Co | 6.42% | Reduce -66.3% | 708,968 | $17.8M |
| Voya Investment Management LLC | 0.02% | Add +4384.6% | 669,012 | $16.8M |
| Silvercrest Asset Management Group LLC | 0.12% | Add +3.4% | 659,361 | $16.6M |
| Massachusetts Financial Services Co. | 0.01% | Reduce -43.1% | 610,167 | $15.3M |
| First Trust Advisors LP | 0.01% | Reduce -31.5% | 546,947 | $13.7M |
| Oasis Management Co Ltd. | 4.57% | New | 530,210 | $13.3M |
| FIFTHDELTA Ltd | 3.18% | New | 505,600 | $12.7M |
| Ameriprise Financial Inc. | 0.00% | Add +39.6% | 503,226 | $12.6M |
| Walleye Capital LLC | 0.15% | Reduce -31.6% | 489,300 | $12.3M |
| Alyeska Investment Group, L.P. | 0.05% | Add +10.5% | 469,589 | $11.8M |
| Neuberger Berman Group LLC | 0.01% | New | 457,770 | $11.5M |
| Talos Eurisko Asset Management LP | 4.79% | Reduce -39.5% | 449,600 | $11.3M |
| Allspring Global Investments Holdings, LLC | 0.02% | Add +1647.0% | 394,572 | $10.3M |
| S Squared Technology, LLC | 5.11% | Add +8.2% | 397,451 | $10.0M |
| Sei Investments Co. | 0.01% | Add +2.5% | 382,662 | $9.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +31.8% | 354,610 | $8.9M |
| Rhumbline Advisers | 0.01% | Add +1.4% | 330,263 | $8.3M |
| Trillium Asset Management, LLC | 0.24% | Add +27.2% | 326,592 | $8.2M |
| Janus Henderson Group PLC | 0.00% | Add +470.7% | 327,192 | $8.1M |
| Westfield Capital Management Co. LP | 0.04% | Reduce -86.5% | 303,672 | $7.6M |
| ArrowMark Colorado Holdings LLC | 0.12% | Add +7.9% | 288,366 | $7.2M |
| Jain Global LLC | 0.15% | Add +50.0% | 284,953 | $7.2M |
| Pier Capital, LLC | 1.20% | Reduce -35.7% | 284,767 | $7.2M |
| Comerica Bank | 0.03% | Reduce -58.0% | 273,170 | $6.9M |
| Peregrine Capital Management LLC | 0.22% | New | 268,416 | $6.7M |
| Lazard Asset Management LLC | 0.01% | Reduce -34.6% | 264,641 | $6.7M |
| Meridiem Capital Partners LP | 0.69% | Reduce -78.3% | 249,920 | $6.3M |
| Swiss National Bank | 0.00% | Reduce -1.5% | 249,500 | $6.3M |
| Polar Asset Management Partners Inc. | 0.27% | Reduce -38.7% | 232,055 | $5.8M |
| Retirement Systems of Alabama | 0.02% | Add +0.1% | 200,113 | $5.0M |
| Legal & General Group Plc | 0.00% | Add +3.4% | 195,783 | $4.9M |
| Lightrock Netherlands B.V. | 1.28% | Reduce -5.3% | 192,752 | $4.9M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -10.4% | 189,914 | $4.8M |
| Osterweis Capital Management Inc. | 0.30% | New | 179,290 | $4.5M |
| Nuveen, LLC | 0.00% | — | 123,737 | $4.1M |
| TIG Advisors, LLC | 0.26% | New | 161,253 | $4.1M |
| Wells Fargo & Company | 0.00% | Add +16.8% | 161,038 | $4.0M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.01% | Add +12.1% | 157,197 | $4.0M |
| California State Teachers Retirement System | 0.00% | Add +29.5% | 155,436 | $3.9M |
| State of Wisconsin Investment Board | 0.01% | Add +31.2% | 151,993 | $3.8M |
| BNP Paribas Financial Markets | 0.00% | Reduce -76.5% | 150,574 | $3.8M |
| Corebridge Financial, Inc. | 0.02% | Reduce -2.3% | 144,303 | $3.6M |
| Susquehanna International Group, LLP | 0.01% | Add +105.5% | 138,760 | $3.5M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -48.6% | 132,115 | $3.3M |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.02% | Add +354.9% | 131,250 | $3.3M |
| Barclays PLC | 0.00% | Reduce -20.6% | 124,176 | $3.1M |
| Polymer Capital Management (US) LLC | 0.93% | New | 122,807 | $3.1M |
| Kennedy Capital Management LLC | 0.07% | Reduce -26.6% | 119,450 | $3.0M |
| Royal Bank of Canada | 0.00% | Add +70.0% | 117,923 | $3.0M |
| Verition Fund Management LLC | 0.02% | Reduce -3.9% | 114,870 | $2.9M |
| Two Sigma Investments, LP | 0.01% | Reduce -92.4% | 108,992 | $2.7M |
| Jane Street Group, LLC | 0.00% | Add +159.2% | 105,698 | $2.7M |
| Envestnet Asset Management Inc. | 0.00% | Add +36.7% | 104,966 | $2.6M |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -0.6% | 101,635 | $2.6M |
| Citigroup Inc. | 0.00% | Reduce -25.7% | 99,014 | $2.5M |
| Holocene Advisors, LP | 0.01% | Reduce -55.6% | 93,404 | $2.3M |
| Kettle Hill Capital Management, LLC | 0.64% | Reduce -88.7% | 93,393 | $2.3M |
| State of Tennessee, Department of Treasury | 0.01% | No change | 93,365 | $2.3M |
| Squarepoint Ops LLC | 0.01% | Add +584.1% | 87,580 | $2.2M |
| New Age Alpha Advisors, LLC | 0.10% | Reduce -29.5% | 85,071 | $2.1M |
| State Board of Administration of Florida Retirement System | 0.00% | Add +5.7% | 84,393 | $2.1M |
| Lisanti Capital Growth, LLC | 0.59% | New | 79,055 | $2.0M |
| Royce & Associates LP | 0.02% | New | 78,153 | $2.0M |
"% of holder's portfolio" is ALGM's weight in each manager's 13F, not the share of Allegro Microsystems Inc. the manager owns.