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, Q4 2025
Institutional positions in Allegro Microsystems, Inc. as of Dec 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
- 294
- +5 vs. Q3 2025
- Shares held
- 136.5M
- +1.07M (+0.8%) vs. Q3 2025
- Total value
- $3.60B
- −$352.0M (−8.9%) vs. Q3 2025
- New holders
- 56
- 79 more added
- Sold out
- 51
- 122 more reduced
7 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Allegro Microsystems, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Mackenzie Financial Corp | 8,809 | $235.9K | 0.00% | −876−9.0% | Reduced |
| Securian Asset Management, Inc | 9,027 | $238.1K | 0.01% | −258−2.8% | Reduced |
| Profund Advisors LLC | 9,244 | $243.9K | 0.01% | +288+3.2% | Added |
| Federated Hermes, Inc. | 9,973 | $263.1K | 0.00% | −1,102−10.0% | Reduced |
| Stifel Financial Corp | 10,050 | $265.1K | 0.00% | +62+0.6% | Added |
| Commerce Bank | 10,255 | $270.5K | 0.00% | −110−1.1% | Reduced |
| American Century Companies Inc | 10,274 | $271.0K | 0.00% | 00.0% | Unchanged |
| Mercer Global Advisors Inc | 10,502 | $277.0K | 0.00% | +1,977+23.2% | Added |
| IMC-Chicago, LLC | 10,618 | $280.1K | 0.00% | −112,219−91.4% | Reduced |
| State of Wyoming | 10,669 | $281.4K | 0.03% | −5,340−33.4% | Reduced |
| Banque Pictet & Cie SA | 10,770 | $284.1K | 0.00% | −2,533−19.0% | Reduced |
| Yorktown Management & Research Co Inc | 11,300 | $298.1K | 0.24% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 11,812 | $311.6K | 0.00% | −3,634−23.5% | Reduced |
| The PNC Financial Services Group, Inc. | 11,820 | $311.8K | 0.00% | −2,893−19.7% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 11,895 | $313.8K | 0.00% | −497−4.0% | Reduced |
| Cetera Investment Advisers | 11,901 | $313.9K | 0.00% | −3,075−20.5% | Reduced |
| Pinpoint Asset Management (Singapore) Pte. Ltd. | 12,050 | $317.9K | 0.07% | +12,050 | New |
| State of Alaska, Department of Revenue | 12,136 | $320.0K | 0.00% | −1,345−10.0% | Reduced |
| Teacher Retirement System of Texas | 12,705 | $335.2K | 0.00% | −11,401−47.3% | Reduced |
| Xponance, Inc. | 12,736 | $336.0K | 0.00% | −2,278−15.2% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 12,752 | $336.4K | 0.00% | +12,752 | New |
| Inceptionr LLC | 12,939 | $341.3K | 0.09% | +3,057+30.9% | Added |
| Holocene Advisors, LP | 12,962 | $341.9K | 0.00% | +12,962 | New |
| Wealth Enhancement Advisory Services, LLC | 11,081 | $349.4K | 0.00% | +11,081 | New |
| Keybank National Association | 13,565 | $357.8K | 0.00% | −853−5.9% | Reduced |
| Walleye Trading LLC | 13,875 | $366.0K | 0.01% | −16,050−53.6% | Reduced |
| Circle Wealth Management, LLC | 14,002 | $369.4K | 0.01% | −3,715−21.0% | Reduced |
| CWM, LLC | 14,053 | $371.0K | 0.00% | −2,993−17.6% | Reduced |
| Bank of Montreal | 14,075 | $371.3K | 0.00% | +770+5.8% | Added |
| Vident Advisory, LLC | 14,220 | $375.1K | 0.00% | −49−0.3% | Reduced |
| JustInvest LLC | 14,268 | $376.4K | 0.00% | +419+3.0% | Added |
| SG Americas Securities, LLC | 14,754 | $389.0K | 0.00% | −11,369−43.5% | Reduced |
| CI Private Wealth, LLC | 14,457 | $407.6K | 0.00% | +4,423+44.1% | Added |
| Virginia Retirement Systems Et Al | 16,169 | $426.5K | 0.00% | −1,100−6.4% | Reduced |
| Altfest L J & Co Inc | 16,287 | $429.7K | 0.05% | +16,287 | New |
| Vontobel Holding Ltd. | 16,413 | $433.0K | 0.00% | −1,311−7.4% | Reduced |
| Rockefeller Capital Management L.P. | 16,876 | $445.2K | 0.00% | +13,918+470.5% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 17,085 | $450.7K | 0.00% | +5,581+48.5% | Added |
| TSG Advice Partners, LLC | 17,167 | $452.9K | 0.07% | +17,167 | New |
| Parallax Volatility Advisers, L.P. | 17,291 | $456.1K | 0.01% | −9,007−34.2% | Reduced |
| Integrated Wealth Concepts LLC | 17,976 | $474.2K | 0.01% | +17,976 | New |
| Canada Pension Plan Investment Board | 18,000 | $474.8K | 0.00% | +11,800+190.3% | Added |
| Campbell & CO Investment Adviser LLC | 18,255 | $481.6K | 0.02% | +18,255 | New |
| Victory Capital Management Inc | 18,721 | $493.9K | 0.00% | +29+0.2% | Added |
| Ethic Inc. | 19,069 | $503.0K | 0.01% | −531−2.7% | Reduced |
| Deutsche Bank AG | 20,182 | $532.4K | 0.00% | +5,189+34.6% | Added |
| ProShare Advisors LLC | 20,773 | $548.0K | 0.00% | +4,069+24.4% | Added |
| Pictet Asset Management Holding SA | 20,787 | $548.4K | 0.00% | +3,387+19.5% | Added |
| Russell Investments Group, Ltd. | 21,249 | $560.5K | 0.00% | +6,753+46.6% | Added |
| Graham Capital Management, L.P. | 22,533 | $594.4K | 0.02% | +6,197+37.9% | Added |
| Ameritas Investment Partners, Inc. | 22,731 | $599.6K | 0.02% | −509−2.2% | Reduced |
| Toroso Investments, LLC | 23,135 | $610.3K | 0.00% | +23,135 | New |
| Amundi | 23,256 | $613.5K | 0.00% | +13,214+131.6% | Added |
| Lazard Asset Management LLC | 23,712 | $625.5K | 0.00% | −7,940−25.1% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 23,712 | $625.5K | 0.00% | −7,940−25.1% | Reduced |
| Advisors Asset Management, Inc. | 23,744 | $626.4K | 0.01% | +1,245+5.5% | Added |
| Oregon Public Employees Retirement Fund | 24,737 | $652.6K | 0.01% | −200−0.8% | Reduced |
| Prentiss Smith & Co Inc | 25,060 | $661.1K | 0.39% | 00.0% | Unchanged |
| Creative Planning | 25,406 | $670.2K | 0.00% | +2,729+12.0% | Added |
| XTX Topco Ltd | 25,638 | $676.3K | 0.02% | −24,720−49.1% | Reduced |
| Tudor Investment Corp Et Al | 25,665 | $677.0K | 0.00% | +25,665 | New |
| New Mexico Educational Retirement Board | 27,081 | $714.0K | 0.02% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 27,500 | $725.5K | 0.00% | 00.0% | Unchanged |
| PEAK6 LLC | 27,542 | $726.6K | 0.02% | +27,542 | New |
| Northwestern Mutual Investment Management Company, LLC | 27,750 | $732.0K | 0.01% | +116+0.4% | Added |
| Thrivent Financial for Lutherans | 27,929 | $737.0K | 0.00% | −554−1.9% | Reduced |
| Bridgefront Capital, LLC | 28,801 | $759.8K | 0.19% | +28,801 | New |
| State of Michigan Retirement System | 29,300 | $772.9K | 0.00% | −200−0.7% | Reduced |
| Lecap Asset Management Ltd | 29,696 | $783.4K | 0.31% | +29,696 | New |
| Alps Advisors Inc | 29,789 | $785.8K | 0.00% | +806+2.8% | Added |
| Comerica Bank | 29,905 | $788.9K | 0.00% | −2,042−6.4% | Reduced |
| MML Investors Services, LLC | 30,892 | $814.9K | 0.00% | +30,892 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 31,037 | $818.8K | 0.00% | −781−2.5% | Reduced |
| New York State Teachers Retirement System | 32,200 | $849.0K | 0.00% | −100−0.3% | Reduced |
| Pacer Advisors, Inc. | 32,313 | $852.4K | 0.00% | +16,003+98.1% | Added |
| LPL Financial LLC | 32,473 | $856.6K | 0.00% | −5,037−13.4% | Reduced |
| Pinnacle Financial Partners, Inc. | 32,476 | $856.7K | 0.01% | +32,476 | New |
| Fox Run Management, L.L.C. | 32,747 | $863.9K | 0.13% | −14,843−31.2% | Reduced |
| Louisiana State Employees Retirement System | 34,300 | $904.8K | 0.02% | −200−0.6% | Reduced |
| Entropy Technologies, LP | 35,895 | $946.9K | 0.05% | +35,895 | New |
| Arizona State Retirement System | 36,039 | $950.7K | 0.01% | −2,254−5.9% | Reduced |
| Intech Investment Management LLC | 36,173 | $954.2K | 0.01% | +36,173 | New |
| Envestnet Asset Management Inc | 36,809 | $971.0K | 0.00% | −574−1.5% | Reduced |
| Royal Bank of Canada | 37,534 | $990.0K | 0.00% | −604,940−94.2% | Reduced |
| Public Employees Retirement System of Ohio | 37,893 | $999.6K | 0.00% | −1,354−3.4% | Reduced |
| Moody National Bank Trust Division | 38,467 | $1.01M | 0.10% | 00.0% | Unchanged |
| Natixis Advisors, L.P. | 39,330 | $1.04M | 0.00% | −2,357−5.7% | Reduced |
| Teachers Retirement System of the State of Kentucky | 39,633 | $1.04M | 0.01% | 00.0% | Unchanged |
| HSBC Holdings PLC | 39,811 | $1.05M | 0.00% | −47,040−54.2% | Reduced |
| Handelsbanken Fonder AB | 40,000 | $1.05M | 0.00% | 00.0% | Unchanged |
| Needham Investment Management LLC | 40,000 | $1.06M | 0.07% | 00.0% | Unchanged |
| Sphera Management Technology Funds Ltd | 40,000 | $1.06M | 0.55% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 42,732 | $1.13M | 0.00% | 00.0% | Unchanged |
| Kennedy Capital Management, Inc. | 44,860 | $1.18M | 0.03% | −11,753−20.8% | Reduced |
| Guggenheim Capital LLC | 45,571 | $1.20M | 0.01% | +25,337+125.2% | Added |
| Yousif Capital Management, LLC | 38,286 | $1.26M | 0.01% | −463−1.2% | Reduced |
| Qube Research & Technologies Ltd | 48,097 | $1.27M | 0.00% | +48,097 | New |
| New York State Common Retirement Fund | 50,938 | $1.34M | 0.00% | 00.0% | Unchanged |
| Treasurer of the State of North Carolina | 51,565 | $1.36M | 0.00% | −3,772−6.8% | Reduced |
| Mutual of America Capital Management LLC | 51,618 | $1.36M | 0.01% | −5,638−9.8% | Reduced |