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, Q2 2025
Institutional positions in Allegro Microsystems, Inc. as of Jun 30, 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
- 274
- −15 vs. Q1 2025
- Shares held
- 146.0M
- −9.87M (−6.3%) vs. Q1 2025
- Total value
- $4.99B
- +$1.07B (+27.4%) vs. Q1 2025
- New holders
- 53
- 95 more added
- Sold out
- 68
- 103 more reduced
3 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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, Q2 2025
Shares, value and share of portfolio for each institution holding Allegro Microsystems, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 27,247,473 | $931.6M | 0.05% | +326,357+1.2% | Added |
| Capital Research Global Investors | 15,904,357 | $543.8M | 0.11% | +4,841,556+43.8% | Added |
| Vanguard Group Inc | 14,205,939 | $485.7M | 0.01% | +105,922+0.8% | Added |
| BlackRock, Inc. | 11,789,868 | $403.1M | 0.01% | +118,310+1.0% | Added |
| JPMorgan Chase & Co | 8,013,498 | $274.0M | 0.02% | −982,308−10.9% | Reduced |
| Invesco Ltd. | 6,254,575 | $213.8M | 0.04% | +1,418,934+29.3% | Added |
| State Street Corp | 5,193,001 | $177.5M | 0.01% | +108,402+2.1% | Added |
| Clearbridge Investments, LLC | 3,163,764 | $108.2M | 0.09% | +2,177+0.1% | Added |
| Alliancebernstein L.P. | 2,759,872 | $94.4M | 0.03% | +1,806,183+189.4% | Added |
| Wellington Management Group LLP | 2,636,839 | $90.2M | 0.02% | −612,051−18.8% | Reduced |
| Macquarie Group Ltd | 2,579,328 | $88.2M | 0.11% | −56,686−2.2% | Reduced |
| Geode Capital Management, LLC | 2,405,986 | $82.3M | 0.01% | +17,902+0.7% | Added |
| Frontier Capital Management Co LLC | 2,365,957 | $80.9M | 0.75% | −543,780−18.7% | Reduced |
| Adage Capital Partners GP, L.L.C. | 2,177,560 | $74.5M | 0.13% | +69,137+3.3% | Added |
| Principal Financial Group Inc | 2,157,337 | $73.8M | 0.04% | −258,765−10.7% | Reduced |
| Dimensional Fund Advisors LP | 2,107,804 | $72.1M | 0.02% | +139,725+7.1% | Added |
| Morgan Stanley | 2,076,352 | $71.0M | 0.00% | −572,019−21.6% | Reduced |
| Citadel Advisors LLC | 1,519,408 | $51.9M | 0.05% | −2,814,205−64.9% | Reduced |
| Balyasny Asset Management LLC | 1,472,089 | $50.3M | 0.11% | −854,375−36.7% | Reduced |
| Norges Bank | 1,407,943 | $48.1M | 0.01% | +141,895+11.2% | Added |
| Analog Century Management LP | 1,371,590 | $46.9M | 2.75% | −560,580−29.0% | Reduced |
| Segall Bryant & Hamill, LLC | 1,328,254 | $45.4M | 0.64% | +16,728+1.3% | Added |
| T. Rowe Price Investment Management, Inc. | 1,287,841 | $44.0M | 0.03% | +7,595+0.6% | Added |
| Raymond James Financial Inc | 1,255,182 | $42.9M | 0.01% | +261,842+26.4% | Added |
| Neuberger Berman Group LLC | 1,244,415 | $42.5M | 0.03% | +786,645+171.8% | Added |
| Charles Schwab Investment Management Inc | 1,239,325 | $42.4M | 0.01% | +72,410+6.2% | Added |
| Summit Partners Public Asset Management, LLC | 1,154,000 | $39.5M | 1.54% | −1,117,600−49.2% | Reduced |
| Northern Trust Corp | 1,058,724 | $36.2M | 0.00% | −31,055−2.8% | Reduced |
| Bank of New York Mellon Corp | 1,042,420 | $35.6M | 0.01% | +45,847+4.6% | Added |
| Royal Bank of Canada | 848,511 | $29.0M | 0.01% | +730,588+619.5% | Added |
| Voya Investment Management LLC | 716,443 | $24.5M | 0.02% | +47,431+7.1% | Added |
| GW&K Investment Management, LLC | 704,818 | $24.1M | 0.22% | −349,938−33.2% | Reduced |
| Silvercrest Asset Management Group LLC | 690,365 | $23.6M | 0.16% | +31,004+4.7% | Added |
| Millennium Management LLC | 679,618 | $23.2M | 0.02% | −1,723,360−71.7% | Reduced |
| Loomis Sayles & Co L P | 666,361 | $22.8M | 0.03% | −374,221−36.0% | Reduced |
| UBS Group AG | 659,640 | $22.6M | 0.00% | −800,778−54.8% | Reduced |
| First Trust Advisors LP | 576,478 | $19.7M | 0.02% | +29,531+5.4% | Added |
| Massachusetts Financial Services Co | 513,045 | $17.5M | 0.01% | −97,122−15.9% | Reduced |
| UBS Asset Management Americas Inc | 483,323 | $16.5M | 0.00% | +128,713+36.3% | Added |
| Bank of America Corp | 458,769 | $15.7M | 0.00% | −834,466−64.5% | Reduced |
| Schonfeld Strategic Advisors LLC | 435,308 | $14.9M | 0.11% | −601,056−58.0% | Reduced |
| Ameriprise Financial Inc | 417,154 | $14.3M | 0.00% | −86,072−17.1% | Reduced |
| S Squared Technology, LLC | 397,451 | $13.6M | 5.73% | 00.0% | Unchanged |
| Allspring Global Investments Holdings, LLC | 391,104 | $13.5M | 0.02% | −3,468−0.9% | Reduced |
| Two Sigma Investments, LP | 346,806 | $11.9M | 0.02% | +237,814+218.2% | Added |
| Rhumbline Advisers | 329,870 | $11.3M | 0.01% | −393−0.1% | Reduced |
| Trillium Asset Management, LLC | 310,829 | $10.6M | 0.29% | −15,763−4.8% | Reduced |
| Point72 Asset Management, L.P. | 294,555 | $10.1M | 0.02% | +294,555 | New |
| Pier Capital, LLC | 262,153 | $8.96M | 1.37% | −22,614−7.9% | Reduced |
| Swiss National Bank | 246,200 | $8.42M | 0.01% | −3,300−1.3% | Reduced |
| Nuveen, LLC | 245,629 | $8.40M | 0.00% | +121,892+98.5% | Added |
| Goldman Sachs Group Inc | 237,561 | $8.12M | 0.00% | +47,647+25.1% | Added |
| Peregrine Capital Management LLC | 234,925 | $8.03M | 0.24% | −33,491−12.5% | Reduced |
| ArrowMark Colorado Holdings LLC | 227,377 | $7.77M | 0.14% | −60,989−21.1% | Reduced |
| Legal & General Group Plc | 202,481 | $6.92M | 0.00% | +6,698+3.4% | Added |
| Retirement Systems of Alabama | 200,781 | $6.86M | 0.02% | +668+0.3% | Added |
| Lazard Asset Management LLC | 177,822 | $6.08M | 0.01% | −86,819−32.8% | Reduced |
| Citigroup Inc | 176,538 | $6.04M | 0.00% | +77,524+78.3% | Added |
| Wells Fargo & Company | 165,489 | $5.66M | 0.00% | +4,451+2.8% | Added |
| Susquehanna International Group, LLP | 154,114 | $5.27M | 0.01% | +15,354+11.1% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 148,977 | $5.09M | 0.01% | −8,220−5.2% | Reduced |
| HRT Financial LP | 130,831 | $4.47M | 0.02% | +130,831 | New |
| G2 Investment Partners Management LLC | 130,000 | $4.44M | 0.97% | +130,000 | New |
| ExodusPoint Capital Management, LP | 128,830 | $4.41M | 0.05% | +128,830 | New |
| California State Teachers Retirement System | 118,738 | $4.06M | 0.00% | −36,698−23.6% | Reduced |
| Barclays PLC | 117,759 | $4.03M | 0.00% | −6,417−5.2% | Reduced |
| Lightrock Netherlands B.V. | 137,752 | $4.01M | 1.10% | −55,000−28.5% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 116,923 | $4.00M | 0.00% | −15,192−11.5% | Reduced |
| State of Wisconsin Investment Board | 116,652 | $3.99M | 0.01% | −35,341−23.3% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 115,830 | $3.96M | 0.09% | +115,830 | New |
| Lisanti Capital Growth, LLC | 109,975 | $3.76M | 1.04% | +30,920+39.1% | Added |
| Castleark Management LLC | 103,160 | $3.53M | 0.11% | +103,160 | New |
| Manufacturers Life Insurance Company, The | 93,651 | $3.20M | 0.00% | −7,984−7.9% | Reduced |
| State of Tennessee, Treasury Department | 93,365 | $3.19M | 0.01% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 89,327 | $3.06M | 0.00% | +12,038+15.6% | Added |
| SEI Investments Co | 86,352 | $2.95M | 0.00% | −296,310−77.4% | Reduced |
| State Board of Administration of Florida Retirement System | 84,583 | $2.89M | 0.01% | +190+0.2% | Added |
| Jain Global LLC | 81,812 | $2.80M | 0.04% | −203,141−71.3% | Reduced |
| Comerica Bank | 78,990 | $2.70M | 0.01% | −194,180−71.1% | Reduced |
| Bridgewater Associates, LP | 77,321 | $2.64M | 0.01% | +77,321 | New |
| Kennedy Capital Management, Inc. | 73,395 | $2.51M | 0.06% | −46,055−38.6% | Reduced |
| State of New Jersey Common Pension Fund D | 72,692 | $2.49M | 0.01% | −4,658−6.0% | Reduced |
| MetLife Investment Management | 70,267 | $2.40M | 0.01% | −2,081−2.9% | Reduced |
| Itau Unibanco Holding S.A. | 70,000 | $2.39M | 0.09% | +70,000 | New |
| Mutual of America Capital Management LLC | 65,011 | $2.22M | 0.02% | −2,272−3.4% | Reduced |
| Amalgamated Bank | 59,267 | $2.03M | 0.02% | −1,027−1.7% | Reduced |
| Verition Fund Management LLC | 58,786 | $2.01M | 0.01% | −56,084−48.8% | Reduced |
| Treasurer of the State of North Carolina | 57,486 | $1.97M | 0.01% | +3,908+7.3% | Added |
| Janus Henderson Group PLC | 57,329 | $1.96M | 0.00% | −269,863−82.5% | Reduced |
| New York State Common Retirement Fund | 54,138 | $1.85M | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 52,861 | $1.81M | 0.06% | +8,576+19.4% | Added |
| Envestnet Asset Management Inc | 52,656 | $1.80M | 0.00% | −52,310−49.8% | Reduced |
| Polymer Capital Management (US) LLC | 50,300 | $1.72M | 0.28% | −72,507−59.0% | Reduced |
| Needham Investment Management LLC | 50,000 | $1.71M | 0.14% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 46,939 | $1.60M | 0.01% | +7,177+18.0% | Added |
| Police & Firemen's Retirement System of New Jersey | 45,882 | $1.57M | 0.01% | +3,744+8.9% | Added |
| Robeco Schweiz AG | 45,000 | $1.54M | 0.04% | +45,000 | New |
| Yousif Capital Management, LLC | 43,651 | $1.49M | 0.02% | −761−1.7% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 42,732 | $1.46M | 0.00% | +5,515+14.8% | Added |
| Natixis Advisors, L.P. | 42,730 | $1.46M | 0.00% | +4,167+10.8% | Added |