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 |
|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | 93,651 | $3.20M | 0.00% | −7,984−7.9% | Reduced |
| Castleark Management LLC | 103,160 | $3.53M | 0.11% | +103,160 | New |
| Lisanti Capital Growth, LLC | 109,975 | $3.76M | 1.04% | +30,920+39.1% | Added |
| Susquehanna Portfolio Strategies, LLC | 115,830 | $3.96M | 0.09% | +115,830 | New |
| State of Wisconsin Investment Board | 116,652 | $3.99M | 0.01% | −35,341−23.3% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 116,923 | $4.00M | 0.00% | −15,192−11.5% | Reduced |
| Lightrock Netherlands B.V. | 137,752 | $4.01M | 1.10% | −55,000−28.5% | Reduced |
| Barclays PLC | 117,759 | $4.03M | 0.00% | −6,417−5.2% | Reduced |
| California State Teachers Retirement System | 118,738 | $4.06M | 0.00% | −36,698−23.6% | Reduced |
| ExodusPoint Capital Management, LP | 128,830 | $4.41M | 0.05% | +128,830 | New |
| G2 Investment Partners Management LLC | 130,000 | $4.44M | 0.97% | +130,000 | New |
| HRT Financial LP | 130,831 | $4.47M | 0.02% | +130,831 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 148,977 | $5.09M | 0.01% | −8,220−5.2% | Reduced |
| Susquehanna International Group, LLP | 154,114 | $5.27M | 0.01% | +15,354+11.1% | Added |
| Wells Fargo & Company | 165,489 | $5.66M | 0.00% | +4,451+2.8% | Added |
| Citigroup Inc | 176,538 | $6.04M | 0.00% | +77,524+78.3% | Added |
| Lazard Asset Management LLC | 177,822 | $6.08M | 0.01% | −86,819−32.8% | Reduced |
| Retirement Systems of Alabama | 200,781 | $6.86M | 0.02% | +668+0.3% | Added |
| Legal & General Group Plc | 202,481 | $6.92M | 0.00% | +6,698+3.4% | Added |
| ArrowMark Colorado Holdings LLC | 227,377 | $7.77M | 0.14% | −60,989−21.1% | Reduced |
| Peregrine Capital Management LLC | 234,925 | $8.03M | 0.24% | −33,491−12.5% | Reduced |
| Goldman Sachs Group Inc | 237,561 | $8.12M | 0.00% | +47,647+25.1% | Added |
| Nuveen, LLC | 245,629 | $8.40M | 0.00% | +121,892+98.5% | Added |
| Swiss National Bank | 246,200 | $8.42M | 0.01% | −3,300−1.3% | Reduced |
| Pier Capital, LLC | 262,153 | $8.96M | 1.37% | −22,614−7.9% | Reduced |
| Point72 Asset Management, L.P. | 294,555 | $10.1M | 0.02% | +294,555 | New |
| Trillium Asset Management, LLC | 310,829 | $10.6M | 0.29% | −15,763−4.8% | Reduced |
| Rhumbline Advisers | 329,870 | $11.3M | 0.01% | −393−0.1% | Reduced |
| Two Sigma Investments, LP | 346,806 | $11.9M | 0.02% | +237,814+218.2% | Added |
| Allspring Global Investments Holdings, LLC | 391,104 | $13.5M | 0.02% | −3,468−0.9% | Reduced |
| S Squared Technology, LLC | 397,451 | $13.6M | 5.73% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 417,154 | $14.3M | 0.00% | −86,072−17.1% | Reduced |
| Schonfeld Strategic Advisors LLC | 435,308 | $14.9M | 0.11% | −601,056−58.0% | Reduced |
| Bank of America Corp | 458,769 | $15.7M | 0.00% | −834,466−64.5% | Reduced |
| UBS Asset Management Americas Inc | 483,323 | $16.5M | 0.00% | +128,713+36.3% | Added |
| Massachusetts Financial Services Co | 513,045 | $17.5M | 0.01% | −97,122−15.9% | Reduced |
| First Trust Advisors LP | 576,478 | $19.7M | 0.02% | +29,531+5.4% | Added |
| UBS Group AG | 659,640 | $22.6M | 0.00% | −800,778−54.8% | Reduced |
| Loomis Sayles & Co L P | 666,361 | $22.8M | 0.03% | −374,221−36.0% | Reduced |
| Millennium Management LLC | 679,618 | $23.2M | 0.02% | −1,723,360−71.7% | Reduced |
| Silvercrest Asset Management Group LLC | 690,365 | $23.6M | 0.16% | +31,004+4.7% | Added |
| GW&K Investment Management, LLC | 704,818 | $24.1M | 0.22% | −349,938−33.2% | Reduced |
| Voya Investment Management LLC | 716,443 | $24.5M | 0.02% | +47,431+7.1% | Added |
| Royal Bank of Canada | 848,511 | $29.0M | 0.01% | +730,588+619.5% | Added |
| Bank of New York Mellon Corp | 1,042,420 | $35.6M | 0.01% | +45,847+4.6% | Added |
| Northern Trust Corp | 1,058,724 | $36.2M | 0.00% | −31,055−2.8% | Reduced |
| Summit Partners Public Asset Management, LLC | 1,154,000 | $39.5M | 1.54% | −1,117,600−49.2% | Reduced |
| Charles Schwab Investment Management Inc | 1,239,325 | $42.4M | 0.01% | +72,410+6.2% | Added |
| Neuberger Berman Group LLC | 1,244,415 | $42.5M | 0.03% | +786,645+171.8% | Added |
| Raymond James Financial Inc | 1,255,182 | $42.9M | 0.01% | +261,842+26.4% | Added |
| T. Rowe Price Investment Management, Inc. | 1,287,841 | $44.0M | 0.03% | +7,595+0.6% | Added |
| Segall Bryant & Hamill, LLC | 1,328,254 | $45.4M | 0.64% | +16,728+1.3% | Added |
| Analog Century Management LP | 1,371,590 | $46.9M | 2.75% | −560,580−29.0% | Reduced |
| Norges Bank | 1,407,943 | $48.1M | 0.01% | +141,895+11.2% | Added |
| Balyasny Asset Management LLC | 1,472,089 | $50.3M | 0.11% | −854,375−36.7% | Reduced |
| Citadel Advisors LLC | 1,519,408 | $51.9M | 0.05% | −2,814,205−64.9% | Reduced |
| Morgan Stanley | 2,076,352 | $71.0M | 0.00% | −572,019−21.6% | Reduced |
| Dimensional Fund Advisors LP | 2,107,804 | $72.1M | 0.02% | +139,725+7.1% | Added |
| Principal Financial Group Inc | 2,157,337 | $73.8M | 0.04% | −258,765−10.7% | Reduced |
| Adage Capital Partners GP, L.L.C. | 2,177,560 | $74.5M | 0.13% | +69,137+3.3% | Added |
| Frontier Capital Management Co LLC | 2,365,957 | $80.9M | 0.75% | −543,780−18.7% | Reduced |
| Geode Capital Management, LLC | 2,405,986 | $82.3M | 0.01% | +17,902+0.7% | Added |
| Macquarie Group Ltd | 2,579,328 | $88.2M | 0.11% | −56,686−2.2% | Reduced |
| Wellington Management Group LLP | 2,636,839 | $90.2M | 0.02% | −612,051−18.8% | Reduced |
| Alliancebernstein L.P. | 2,759,872 | $94.4M | 0.03% | +1,806,183+189.4% | Added |
| Clearbridge Investments, LLC | 3,163,764 | $108.2M | 0.09% | +2,177+0.1% | Added |
| State Street Corp | 5,193,001 | $177.5M | 0.01% | +108,402+2.1% | Added |
| Invesco Ltd. | 6,254,575 | $213.8M | 0.04% | +1,418,934+29.3% | Added |
| JPMorgan Chase & Co | 8,013,498 | $274.0M | 0.02% | −982,308−10.9% | Reduced |
| BlackRock, Inc. | 11,789,868 | $403.1M | 0.01% | +118,310+1.0% | Added |
| Vanguard Group Inc | 14,205,939 | $485.7M | 0.01% | +105,922+0.8% | Added |
| Capital Research Global Investors | 15,904,357 | $543.8M | 0.11% | +4,841,556+43.8% | Added |
| FMR LLC | 27,247,473 | $931.6M | 0.05% | +326,357+1.2% | Added |
| Ecofi Investissements SA | 27,100 | – | – | −34,100−55.7% | Reduced |
| Activest Wealth Management | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −1,603,200−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −942,702−100.0% | Sold out |
| Paloma Partners Management Co | 0 | $0 | 0.00% | −708,968−100.0% | Sold out |
| Oasis Management Co Ltd. | 0 | $0 | 0.00% | −530,210−100.0% | Sold out |
| FIFTHDELTA Ltd | 0 | $0 | 0.00% | −505,600−100.0% | Sold out |
| Alyeska Investment Group, L.P. | 0 | $0 | 0.00% | −469,589−100.0% | Sold out |
| Talos Asset Management LP | 0 | $0 | 0.00% | −449,600−100.0% | Sold out |
| Westfield Capital Management Co LP | 0 | $0 | 0.00% | −303,672−100.0% | Sold out |
| Meridiem Capital Partners LP | 0 | $0 | 0.00% | −249,920−100.0% | Sold out |
| Polar Asset Management Partners Inc. | 0 | $0 | 0.00% | −232,055−100.0% | Sold out |
| Osterweis Capital Management Inc | 0 | $0 | 0.00% | −179,290−100.0% | Sold out |
| TIG Advisors, LLC | 0 | $0 | 0.00% | −161,253−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −144,303−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −105,698−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −93,404−100.0% | Sold out |
| Kettle Hill Capital Management, LLC | 0 | $0 | 0.00% | −93,393−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −87,580−100.0% | Sold out |
| New Age Alpha Advisors, LLC | 0 | $0 | 0.00% | −85,071−100.0% | Sold out |
| Royce & Associates LP | 0 | $0 | 0.00% | −78,153−100.0% | Sold out |
| Credit Industriel Et Commercial | 0 | $0 | 0.00% | −56,206−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −46,016−100.0% | Sold out |
| Groupe la Francaise | 0 | $0 | 0.00% | −37,137−100.0% | Sold out |
| IMC-Chicago, LLC | 0 | $0 | 0.00% | −34,676−100.0% | Sold out |
| Ardsley Advisory Partners LP | 0 | $0 | 0.00% | −32,500−100.0% | Sold out |
| Granahan Investment Management Inc | 0 | $0 | 0.00% | −31,956−100.0% | Sold out |