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 2021
Institutional positions in Allegro Microsystems, Inc. as of Jun 30, 2021. 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
- 129
- +8 vs. Q1 2021
- Shares held
- 80.0M
- +3.88M (+5.1%) vs. Q1 2021
- Total value
- $2.22B
- +$286.3M (+14.8%) vs. Q1 2021
- New holders
- 34
- 53 more added
- Sold out
- 26
- 33 more reduced
2 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2021: 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 2021
Shares, value and share of portfolio for each institution holding Allegro Microsystems, Inc.; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Oep Capital Advisors, L.P. | 31,254,247 | $865.7M | 69.57% | 00.0% | Unchanged |
| Vanguard Group Inc | 5,191,637 | $143.8M | 0.00% | +1,234,086+31.2% | Added |
| Wells Fargo & Company | 3,691,926 | $102.3M | 0.02% | +952,511+34.8% | Added |
| Alliancebernstein L.P. | 3,475,245 | $96.3M | 0.04% | −36,869−1.0% | Reduced |
| JPMorgan Chase & Co | 3,424,393 | $94.9M | 0.01% | +620,572+22.1% | Added |
| Clearbridge Investments, LLC | 3,403,002 | $94.3M | 0.07% | +683,534+25.1% | Added |
| Invesco Ltd. | 3,183,899 | $88.2M | 0.02% | +810,257+34.1% | Added |
| Franklin Resources Inc | 2,190,178 | $60.7M | 0.02% | +2,903+0.1% | Added |
| Macquarie Group Ltd | 2,180,422 | $60.4M | 0.05% | +2,180,422 | New |
| BlackRock Inc. | 1,976,956 | $54.8M | 0.00% | −616,866−23.8% | Reduced |
| State Street Corp | 1,870,000 | $51.8M | 0.00% | +514,235+37.9% | Added |
| TimesSquare Capital Management, LLC | 1,850,110 | $51.2M | 0.42% | +198,210+12.0% | Added |
| Principal Financial Group Inc | 1,725,607 | $47.8M | 0.03% | +340,911+24.6% | Added |
| Federated Hermes, Inc. | 1,450,000 | $40.2M | 0.07% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 1,315,118 | $36.4M | 0.01% | −647,035−33.0% | Reduced |
| Shelter Haven Capital Management, L.P. | 1,266,876 | $35.1M | 12.55% | +607,539+92.1% | Added |
| Schroder Investment Management Group | 1,094,873 | $30.3M | 0.04% | +102,251+10.3% | Added |
| Bamco Inc | 875,000 | $24.2M | 0.06% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 655,730 | $18.2M | 0.00% | +30,810+4.9% | Added |
| ArrowMark Colorado Holdings LLC | 655,210 | $18.1M | 0.14% | −76,311−10.4% | Reduced |
| Adage Capital Partners GP, L.L.C. | 478,967 | $13.3M | 0.03% | −62,500−11.5% | Reduced |
| Pier Capital, LLC | 391,974 | $10.9M | 1.09% | −53,104−11.9% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 358,050 | $9.92M | 0.05% | +358,050 | New |
| Capital Research Global Investors | 318,541 | $8.82M | 0.00% | −53,159−14.3% | Reduced |
| Charles Schwab Investment Management Inc | 294,903 | $8.17M | 0.00% | +7,594+2.6% | Added |
| American Century Companies Inc | 279,240 | $7.74M | 0.01% | −47,569−14.6% | Reduced |
| Tocqueville Asset Management L.P. | 271,375 | $7.52M | 0.11% | −84,275−23.7% | Reduced |
| Bank of America Corp | 270,924 | $7.50M | 0.00% | +129,585+91.7% | Added |
| Morgan Stanley | 268,723 | $7.44M | 0.00% | −368,237−57.8% | Reduced |
| Northern Trust Corp | 254,654 | $7.05M | 0.00% | +23,377+10.1% | Added |
| S Squared Technology, LLC | 242,451 | $6.72M | 3.04% | +50,000+26.0% | Added |
| Nuveen Asset Management, LLC | 222,709 | $6.17M | 0.00% | +62,868+39.3% | Added |
| Norges Bank | 187,357 | $5.19M | 0.00% | +12,357+7.1% | Added |
| Ameriprise Financial Inc | 182,718 | $5.06M | 0.00% | +55,991+44.2% | Added |
| Next Century Growth Investors LLC | 180,840 | $5.01M | 0.39% | −24,519−11.9% | Reduced |
| Arrowstreet Capital, Limited Partnership | 169,925 | $4.71M | 0.01% | −35,759−17.4% | Reduced |
| Bank of New York Mellon Corp | 144,607 | $4.00M | 0.00% | +40,390+38.8% | Added |
| Swiss National Bank | 125,300 | $3.47M | 0.00% | +125,300 | New |
| Trillium Asset Management, LLC | 122,074 | $3.38M | 0.09% | +122,074 | New |
| Squarepoint Ops LLC | 105,711 | $2.93M | 0.02% | +711+0.7% | Added |
| Pentwater Capital Management LP | 105,521 | $2.92M | 0.03% | 00.0% | Unchanged |
| Millennium Management LLC | 101,669 | $2.82M | 0.00% | −86,966−46.1% | Reduced |
| Los Angeles Capital Management LLC | 99,699 | $2.76M | 0.01% | +80,154+410.1% | Added |
| Arosa Capital Management LP | 95,400 | $2.64M | 0.94% | −120,000−55.7% | Reduced |
| California State Teachers Retirement System | 89,328 | $2.47M | 0.00% | +7,038+8.6% | Added |
| Scopus Asset Management, L.P. | 88,219 | $2.44M | 0.04% | −129,143−59.4% | Reduced |
| Zweig-DiMenna Associates LLC | 87,323 | $2.42M | 0.15% | +87,323 | New |
| Engineers Gate Manager LP | 85,678 | $2.37M | 0.15% | +85,678 | New |
| Marshall Wace North America L.P. | 80,926 | $2.24M | 0.01% | −152,449−65.3% | Reduced |
| Penn Capital Management Co Inc | 80,070 | $2.22M | 0.22% | +8,446+11.8% | Added |
| Lazard Asset Management LLC | 78,007 | $2.16M | 0.00% | +35,052+81.6% | Added |
| Qube Research & Technologies Ltd | 71,524 | $1.98M | 0.02% | +2,302+3.3% | Added |
| UBS Asset Management Americas Inc | 60,764 | $1.68M | 0.00% | +44,427+271.9% | Added |
| New York State Common Retirement Fund | 54,300 | $1.50M | 0.00% | +4,000+8.0% | Added |
| Marshall Wace, LLP | 52,047 | $1.44M | 0.01% | −66,297−56.0% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 51,309 | $1.42M | 0.00% | +8,354+19.4% | Added |
| Rhumbline Advisers | 44,931 | $1.25M | 0.00% | +7,412+19.8% | Added |
| Needham Investment Management LLC | 44,873 | $1.24M | 0.18% | −131,280−74.5% | Reduced |
| SEI Investments Co | 44,587 | $1.24M | 0.00% | +25,592+134.7% | Added |
| Credit Suisse AG | 42,721 | $1.18M | 0.00% | −5,793−11.9% | Reduced |
| Deutsche Bank AG | 42,177 | $1.17M | 0.00% | +40,368+2,231.5% | Added |
| Occudo Quantitative Strategies LP | 42,143 | $1.17M | 0.18% | +42,143 | New |
| Cubist Systematic Strategies, LLC | 39,164 | $1.08M | 0.01% | −32,634−45.5% | Reduced |
| Raymond James & Associates | 37,304 | $1.03M | 0.00% | +6,521+21.2% | Added |
| Parametric Portfolio Associates LLC | 37,268 | $1.03M | 0.00% | −1,059−2.8% | Reduced |
| Cna Financial Corp | 35,049 | $971.0K | 0.27% | −2,660−7.1% | Reduced |
| Twinbeech Capital LP | 34,893 | $967.0K | 0.12% | +34,893 | New |
| Envestnet Asset Management Inc | 34,886 | $966.0K | 0.00% | +7,204+26.0% | Added |
| D. E. Shaw & Co., Inc. | 34,267 | $949.0K | 0.00% | +34,267 | New |
| Citigroup Inc | 33,745 | $935.0K | 0.00% | +27,027+402.3% | Added |
| Allstate Corp | 33,638 | $932.0K | 0.03% | +1,175+3.6% | Added |
| Legal & General Group Plc | 32,321 | $896.0K | 0.00% | +27,919+634.2% | Added |
| Man Group plc | 30,520 | $845.0K | 0.00% | −8,506−21.8% | Reduced |
| Public Employees Retirement System of Ohio | 29,329 | $812.0K | 0.00% | +4,677+19.0% | Added |
| Citadel Advisors LLC | 23,777 | $659.0K | 0.00% | +15,791+197.7% | Added |
| Jacobs Levy Equity Management, Inc | 21,799 | $604.0K | 0.00% | +21,799 | New |
| Hillsdale Investment Management Inc. | 21,800 | $603.0K | 0.05% | +21,800 | New |
| Paloma Partners Management Co | 20,021 | $555.0K | 0.01% | +20,021 | New |
| Dynamic Technology Lab Private Ltd | 19,154 | $531.0K | 0.05% | +19,154 | New |
| Avidian Wealth Solutions, LLC | 18,000 | $499.0K | 0.04% | 00.0% | Unchanged |
| Treasurer of the State of North Carolina | 17,880 | $495.0K | 0.00% | +860+5.1% | Added |
| Woodline Partners LP | 17,543 | $486.0K | 0.01% | −35,128−66.7% | Reduced |
| Quantbot Technologies LP | 17,247 | $477.0K | 0.04% | +17,247 | New |
| Voya Investment Management LLC | 16,569 | $459.0K | 0.00% | +6,312+61.5% | Added |
| Donoghue Forlines LLC | 15,528 | $430.0K | 0.08% | +2,328+17.6% | Added |
| M&T Bank Corp | 15,482 | $428.0K | 0.00% | +148+1.0% | Added |
| Arizona State Retirement System | 15,448 | $428.0K | 0.00% | +15,448 | New |
| Voloridge Investment Management, LLC | 15,345 | $425.0K | 0.00% | +15,345 | New |
| Handelsbanken Fonder AB | 13,700 | $379.0K | 0.00% | +13,700 | New |
| Belvedere Trading LLC | 14,156 | $368.0K | 0.15% | +14,156 | New |
| DuPont Capital Management Corp | 12,603 | $349.0K | 0.01% | 00.0% | Unchanged |
| Royal Bank of Canada | 11,848 | $328.0K | 0.00% | +7,270+158.8% | Added |
| Pathstone Family Office, LLC | 11,676 | $323.0K | 0.01% | +11,676 | New |
| Trexquant Investment LP | 11,546 | $320.0K | 0.03% | +11,546 | New |
| Two Sigma Investments, LP | 11,400 | $316.0K | 0.00% | −19,876−63.6% | Reduced |
| Russell Investments Group, Ltd. | 10,288 | $284.0K | 0.00% | −50,412−83.1% | Reduced |
| Amalgamated Bank | 9,869 | $273.0K | 0.00% | +9,869 | New |
| Wellington Management Group LLP | 9,794 | $271.0K | 0.00% | +9,794 | New |
| Victory Capital Management Inc | 9,560 | $265.0K | 0.00% | +9,560 | New |
| HSBC Holdings PLC | 9,352 | $259.0K | 0.00% | +9,352 | New |