Allegro Microsystems, Inc.
ALGM- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0000866291
In the last 90 days, Allegro Microsystems, Inc. insiders filed 0 open-market purchases and 2 sales; 375 institutions reported holding it in 13F filings for Q2 2026, worth $10.2B in total; Maverick Capital is the only superinvestor holding it.
13F holders, Q1 2025
Institutional positions in Allegro Microsystems, Inc. as of Mar 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 292
- +38 vs. Q4 2024
- Shares held
- 157.6M
- +15.7M (+11.1%) vs. Q4 2024
- Total value
- $3.96B
- +$859.2M (+27.7%) vs. Q4 2024
- New holders
- 70
- 105 more added
- Sold out
- 32
- 82 more reduced
2 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ALGM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 375 | $10.2B |
| Q1 2026 | 322 | $4.32B |
| Q4 2025 | 294 | $3.60B |
| Q3 2025 | 296 | $3.97B |
| Q2 2025 | 274 | $4.99B |
| Q1 2025 | 292 | $3.96B |
| Q4 2024 | 256 | $3.11B |
| Q3 2024 | 248 | $3.32B |
| Q2 2024 | 268 | $3.03B |
| Q1 2024 | 277 | $2.80B |
| Q4 2023 | 288 | $2.91B |
| Q3 2023 | 312 | $2.99B |
| Q2 2023 | 353 | $4.41B |
| Q1 2023 | 314 | $4.67B |
| Q4 2022 | 219 | $2.89B |
| Q3 2022 | 170 | $1.97B |
| Q2 2022 | 172 | $1.83B |
| Q1 2022 | 173 | $2.54B |
| Q4 2021 | 165 | $3.18B |
| Q3 2021 | 153 | $2.71B |
| Q2 2021 | 129 | $2.22B |
| Q1 2021 | 123 | $1.98B |
Institutions, Q1 2025
Shares, value and share of portfolio for each institution holding Allegro Microsystems, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 26,921,116 | $676.5M | 0.04% | +4,146,625+18.2% | Added |
| Vanguard Group Inc | 14,100,017 | $354.3M | 0.01% | +17,070+0.1% | Added |
| BlackRock, Inc. | 11,671,558 | $293.3M | 0.01% | −86,050−0.7% | Reduced |
| Capital Research Global Investors | 11,062,801 | $278.0M | 0.06% | +5,294,593+91.8% | Added |
| JPMorgan Chase & Co | 8,995,806 | $226.1M | 0.02% | −1,535,701−14.6% | Reduced |
| State Street Corp | 5,084,599 | $127.8M | 0.01% | −792,883−13.5% | Reduced |
| Invesco Ltd. | 4,835,641 | $121.5M | 0.02% | +2,746,880+131.5% | Added |
| Citadel Advisors LLC | 4,333,613 | $108.9M | 0.11% | +2,758,171+175.1% | Added |
| Wellington Management Group LLP | 3,248,890 | $81.6M | 0.02% | −744,792−18.6% | Reduced |
| Clearbridge Investments, LLC | 3,161,587 | $79.5M | 0.07% | −223,410−6.6% | Reduced |
| Frontier Capital Management Co LLC | 2,909,737 | $73.1M | 0.80% | +2,818,543+3,090.7% | Added |
| Morgan Stanley | 2,648,371 | $66.6M | 0.00% | −8,427−0.3% | Reduced |
| Macquarie Group Ltd | 2,636,014 | $66.2M | 0.08% | +1,157,239+78.3% | Added |
| Principal Financial Group Inc | 2,416,102 | $60.7M | 0.03% | +144,824+6.4% | Added |
| Millennium Management LLC | 2,402,978 | $60.4M | 0.06% | +1,078,025+81.4% | Added |
| Geode Capital Management, LLC | 2,388,084 | $60.0M | 0.00% | +23,502+1.0% | Added |
| Balyasny Asset Management LLC | 2,326,464 | $58.5M | 0.15% | +1,759,343+310.2% | Added |
| Summit Partners Public Asset Management, LLC | 2,271,600 | $57.1M | 2.74% | +1,377,600+154.1% | Added |
| Adage Capital Partners GP, L.L.C. | 2,108,423 | $53.0M | 0.10% | −625,137−22.9% | Reduced |
| Dimensional Fund Advisors LP | 1,968,079 | $49.5M | 0.01% | +248,805+14.5% | Added |
| Analog Century Management LP | 1,932,170 | $48.6M | 3.93% | −69,268−3.5% | Reduced |
| Kodai Capital Management LP | 1,655,806 | $41.6M | 1.65% | +1,655,806 | New |
| Freestone Grove Partners LP | 1,603,200 | $40.3M | 0.42% | +1,230,709+330.4% | Added |
| UBS Group AG | 1,460,418 | $36.7M | 0.01% | +118,718+8.8% | Added |
| Segall Bryant & Hamill, LLC | 1,311,526 | $33.0M | 0.51% | +1,311,526 | New |
| Bank of America Corp | 1,293,235 | $32.5M | 0.00% | +953,785+281.0% | Added |
| T. Rowe Price Investment Management, Inc. | 1,280,246 | $32.2M | 0.02% | −785,633−38.0% | Reduced |
| Norges Bank | 1,266,048 | $31.8M | 0.00% | +34,282+2.8% | Added |
| Charles Schwab Investment Management Inc | 1,166,915 | $29.3M | 0.01% | +31,568+2.8% | Added |
| Northern Trust Corp | 1,089,779 | $27.4M | 0.00% | +15,346+1.4% | Added |
| GW&K Investment Management, LLC | 1,054,756 | $26.5M | 0.25% | +24,434+2.4% | Added |
| Loomis Sayles & Co L P | 1,040,582 | $26.1M | 0.04% | +167,115+19.1% | Added |
| Schonfeld Strategic Advisors LLC | 1,036,364 | $26.0M | 0.18% | −584,524−36.1% | Reduced |
| Bank of New York Mellon Corp | 996,573 | $25.0M | 0.00% | −63,578−6.0% | Reduced |
| Raymond James Financial Inc | 993,340 | $25.0M | 0.01% | +300,505+43.4% | Added |
| Alliancebernstein L.P. | 953,689 | $24.0M | 0.01% | +425,516+80.6% | Added |
| Cinctive Capital Management LP | 942,702 | $23.7M | 1.89% | +942,702 | New |
| Paloma Partners Management Co | 708,968 | $17.8M | 3.34% | −1,394,832−66.3% | Reduced |
| Voya Investment Management LLC | 669,012 | $16.8M | 0.02% | +654,094+4,384.6% | Added |
| Silvercrest Asset Management Group LLC | 659,361 | $16.6M | 0.12% | +21,790+3.4% | Added |
| Massachusetts Financial Services Co | 610,167 | $15.3M | 0.01% | −462,767−43.1% | Reduced |
| First Trust Advisors LP | 546,947 | $13.7M | 0.01% | −251,104−31.5% | Reduced |
| Oasis Management Co Ltd. | 530,210 | $13.3M | 4.48% | +530,210 | New |
| FIFTHDELTA Ltd | 505,600 | $12.7M | 3.18% | +505,600 | New |
| Ameriprise Financial Inc | 503,226 | $12.6M | 0.00% | +142,702+39.6% | Added |
| Walleye Capital LLC | 489,300 | $12.3M | 0.14% | −226,143−31.6% | Reduced |
| Alyeska Investment Group, L.P. | 469,589 | $11.8M | 0.05% | +44,588+10.5% | Added |
| Neuberger Berman Group LLC | 457,770 | $11.5M | 0.01% | +457,770 | New |
| Talos Asset Management LP | 449,600 | $11.3M | 4.79% | −293,544−39.5% | Reduced |
| Allspring Global Investments Holdings, LLC | 394,572 | $10.3M | 0.02% | +371,987+1,647.1% | Added |
| S Squared Technology, LLC | 397,451 | $9.99M | 5.11% | +30,000+8.2% | Added |
| SEI Investments Co | 382,662 | $9.62M | 0.01% | +9,267+2.5% | Added |
| UBS Asset Management Americas Inc | 354,610 | $8.91M | 0.00% | +85,607+31.8% | Added |
| Rhumbline Advisers | 330,263 | $8.30M | 0.01% | +4,428+1.4% | Added |
| Trillium Asset Management, LLC | 326,592 | $8.21M | 0.24% | +69,782+27.2% | Added |
| Janus Henderson Group PLC | 327,192 | $8.13M | 0.00% | +269,863+470.7% | Added |
| Westfield Capital Management Co LP | 303,672 | $7.63M | 0.04% | −1,944,000−86.5% | Reduced |
| ArrowMark Colorado Holdings LLC | 288,366 | $7.25M | 0.12% | +21,117+7.9% | Added |
| Jain Global LLC | 284,953 | $7.16M | 0.15% | +94,991+50.0% | Added |
| Pier Capital, LLC | 284,767 | $7.16M | 1.20% | −158,054−35.7% | Reduced |
| Comerica Bank | 273,170 | $6.86M | 0.03% | −376,565−58.0% | Reduced |
| Peregrine Capital Management LLC | 268,416 | $6.75M | 0.22% | +268,416 | New |
| Lazard Asset Management LLC | 264,641 | $6.65M | 0.01% | −140,061−34.6% | Reduced |
| Meridiem Capital Partners LP | 249,920 | $6.28M | 0.69% | −900,146−78.3% | Reduced |
| Swiss National Bank | 249,500 | $6.27M | 0.00% | −3,700−1.5% | Reduced |
| Polar Asset Management Partners Inc. | 232,055 | $5.83M | 0.19% | −146,649−38.7% | Reduced |
| Retirement Systems of Alabama | 200,113 | $5.03M | 0.02% | +279+0.1% | Added |
| Legal & General Group Plc | 195,783 | $4.92M | 0.00% | +6,380+3.4% | Added |
| Lightrock Netherlands B.V. | 192,752 | $4.85M | 1.28% | −10,681−5.3% | Reduced |
| Goldman Sachs Group Inc | 189,914 | $4.77M | 0.00% | −22,100−10.4% | Reduced |
| Osterweis Capital Management Inc | 179,290 | $4.51M | 0.22% | +179,290 | New |
| Nuveen, LLC | 123,737 | $4.13M | 0.00% | +123,737 | New |
| TIG Advisors, LLC | 161,253 | $4.05M | 0.26% | +161,253 | New |
| Wells Fargo & Company | 161,038 | $4.05M | 0.00% | +23,192+16.8% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 157,197 | $3.95M | 0.01% | +16,952+12.1% | Added |
| California State Teachers Retirement System | 155,436 | $3.91M | 0.00% | +35,394+29.5% | Added |
| State of Wisconsin Investment Board | 151,993 | $3.82M | 0.01% | +36,158+31.2% | Added |
| BNP Paribas Arbitrage, SA | 150,574 | $3.78M | 0.00% | −488,683−76.4% | Reduced |
| Corebridge Financial, Inc. | 144,303 | $3.63M | 0.02% | −3,453−2.3% | Reduced |
| Susquehanna International Group, LLP | 138,760 | $3.49M | 0.01% | +71,227+105.5% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 132,115 | $3.32M | 0.00% | −124,752−48.6% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 131,250 | $3.30M | 0.02% | +102,400+354.9% | Added |
| Barclays PLC | 124,176 | $3.12M | 0.00% | −32,149−20.6% | Reduced |
| Polymer Capital Management (US) LLC | 122,807 | $3.09M | 0.93% | +122,807 | New |
| Kennedy Capital Management, Inc. | 119,450 | $3.00M | 0.07% | −43,316−26.6% | Reduced |
| Royal Bank of Canada | 117,923 | $2.96M | 0.00% | +48,554+70.0% | Added |
| Verition Fund Management LLC | 114,870 | $2.89M | 0.02% | −4,681−3.9% | Reduced |
| Two Sigma Investments, LP | 108,992 | $2.74M | 0.01% | −1,325,196−92.4% | Reduced |
| Jane Street Group, LLC | 105,698 | $2.66M | 0.00% | +64,925+159.2% | Added |
| Envestnet Asset Management Inc | 104,966 | $2.64M | 0.00% | +28,179+36.7% | Added |
| Manufacturers Life Insurance Company, The | 101,635 | $2.55M | 0.00% | −646−0.6% | Reduced |
| Citigroup Inc | 99,014 | $2.49M | 0.00% | −34,186−25.7% | Reduced |
| Holocene Advisors, LP | 93,404 | $2.35M | 0.01% | −116,814−55.6% | Reduced |
| Kettle Hill Capital Management, LLC | 93,393 | $2.35M | 0.64% | −729,608−88.7% | Reduced |
| State of Tennessee, Treasury Department | 93,365 | $2.35M | 0.01% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 87,580 | $2.20M | 0.01% | +74,777+584.1% | Added |
| New Age Alpha Advisors, LLC | 85,071 | $2.14M | 0.10% | −35,552−29.5% | Reduced |
| State Board of Administration of Florida Retirement System | 84,393 | $2.12M | 0.00% | +4,530+5.7% | Added |
| Lisanti Capital Growth, LLC | 79,055 | $1.99M | 0.59% | +79,055 | New |
| Royce & Associates LP | 78,153 | $1.96M | 0.02% | +78,153 | New |