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 |
|---|---|---|---|---|---|
| Kennedy Capital Management, Inc. | 44,860 | $1.18M | 0.03% | −11,753−20.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 42,732 | $1.13M | 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 |
| Handelsbanken Fonder AB | 40,000 | $1.05M | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 39,811 | $1.05M | 0.00% | −47,040−54.2% | Reduced |
| Teachers Retirement System of the State of Kentucky | 39,633 | $1.04M | 0.01% | 00.0% | Unchanged |
| Natixis Advisors, L.P. | 39,330 | $1.04M | 0.00% | −2,357−5.7% | Reduced |
| Moody National Bank Trust Division | 38,467 | $1.01M | 0.10% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 37,893 | $999.6K | 0.00% | −1,354−3.4% | Reduced |
| Royal Bank of Canada | 37,534 | $990.0K | 0.00% | −604,940−94.2% | Reduced |
| Envestnet Asset Management Inc | 36,809 | $971.0K | 0.00% | −574−1.5% | Reduced |
| Intech Investment Management LLC | 36,173 | $954.2K | 0.01% | +36,173 | New |
| Arizona State Retirement System | 36,039 | $950.7K | 0.01% | −2,254−5.9% | Reduced |
| Entropy Technologies, LP | 35,895 | $946.9K | 0.05% | +35,895 | New |
| Louisiana State Employees Retirement System | 34,300 | $904.8K | 0.02% | −200−0.6% | Reduced |
| Fox Run Management, L.L.C. | 32,747 | $863.9K | 0.13% | −14,843−31.2% | Reduced |
| Pinnacle Financial Partners, Inc. | 32,476 | $856.7K | 0.01% | +32,476 | New |
| LPL Financial LLC | 32,473 | $856.6K | 0.00% | −5,037−13.4% | Reduced |
| Pacer Advisors, Inc. | 32,313 | $852.4K | 0.00% | +16,003+98.1% | Added |
| New York State Teachers Retirement System | 32,200 | $849.0K | 0.00% | −100−0.3% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 31,037 | $818.8K | 0.00% | −781−2.5% | Reduced |
| MML Investors Services, LLC | 30,892 | $814.9K | 0.00% | +30,892 | New |
| Comerica Bank | 29,905 | $788.9K | 0.00% | −2,042−6.4% | Reduced |
| Alps Advisors Inc | 29,789 | $785.8K | 0.00% | +806+2.8% | Added |
| Lecap Asset Management Ltd | 29,696 | $783.4K | 0.31% | +29,696 | New |
| State of Michigan Retirement System | 29,300 | $772.9K | 0.00% | −200−0.7% | Reduced |
| Bridgefront Capital, LLC | 28,801 | $759.8K | 0.19% | +28,801 | New |
| Thrivent Financial for Lutherans | 27,929 | $737.0K | 0.00% | −554−1.9% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 27,750 | $732.0K | 0.01% | +116+0.4% | Added |
| PEAK6 LLC | 27,542 | $726.6K | 0.02% | +27,542 | New |
| KLP Kapitalforvaltning AS | 27,500 | $725.5K | 0.00% | 00.0% | Unchanged |
| New Mexico Educational Retirement Board | 27,081 | $714.0K | 0.02% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 25,665 | $677.0K | 0.00% | +25,665 | New |
| XTX Topco Ltd | 25,638 | $676.3K | 0.02% | −24,720−49.1% | Reduced |
| Creative Planning | 25,406 | $670.2K | 0.00% | +2,729+12.0% | Added |
| Prentiss Smith & Co Inc | 25,060 | $661.1K | 0.39% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 24,737 | $652.6K | 0.01% | −200−0.8% | Reduced |
| Advisors Asset Management, Inc. | 23,744 | $626.4K | 0.01% | +1,245+5.5% | 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 |
| Amundi | 23,256 | $613.5K | 0.00% | +13,214+131.6% | Added |
| Toroso Investments, LLC | 23,135 | $610.3K | 0.00% | +23,135 | New |
| Ameritas Investment Partners, Inc. | 22,731 | $599.6K | 0.02% | −509−2.2% | Reduced |
| Graham Capital Management, L.P. | 22,533 | $594.4K | 0.02% | +6,197+37.9% | Added |
| Russell Investments Group, Ltd. | 21,249 | $560.5K | 0.00% | +6,753+46.6% | Added |
| Pictet Asset Management Holding SA | 20,787 | $548.4K | 0.00% | +3,387+19.5% | Added |
| ProShare Advisors LLC | 20,773 | $548.0K | 0.00% | +4,069+24.4% | Added |
| Deutsche Bank AG | 20,182 | $532.4K | 0.00% | +5,189+34.6% | Added |
| Ethic Inc. | 19,069 | $503.0K | 0.01% | −531−2.7% | Reduced |
| Victory Capital Management Inc | 18,721 | $493.9K | 0.00% | +29+0.2% | Added |
| Campbell & CO Investment Adviser LLC | 18,255 | $481.6K | 0.02% | +18,255 | New |
| Canada Pension Plan Investment Board | 18,000 | $474.8K | 0.00% | +11,800+190.3% | Added |
| Integrated Wealth Concepts LLC | 17,976 | $474.2K | 0.01% | +17,976 | New |
| Parallax Volatility Advisers, L.P. | 17,291 | $456.1K | 0.01% | −9,007−34.2% | Reduced |
| TSG Advice Partners, LLC | 17,167 | $452.9K | 0.07% | +17,167 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 17,085 | $450.7K | 0.00% | +5,581+48.5% | Added |
| Rockefeller Capital Management L.P. | 16,876 | $445.2K | 0.00% | +13,918+470.5% | Added |
| Vontobel Holding Ltd. | 16,413 | $433.0K | 0.00% | −1,311−7.4% | Reduced |
| Altfest L J & Co Inc | 16,287 | $429.7K | 0.05% | +16,287 | New |
| Virginia Retirement Systems Et Al | 16,169 | $426.5K | 0.00% | −1,100−6.4% | Reduced |
| CI Private Wealth, LLC | 14,457 | $407.6K | 0.00% | +4,423+44.1% | Added |
| SG Americas Securities, LLC | 14,754 | $389.0K | 0.00% | −11,369−43.5% | Reduced |
| JustInvest LLC | 14,268 | $376.4K | 0.00% | +419+3.0% | Added |
| Vident Advisory, LLC | 14,220 | $375.1K | 0.00% | −49−0.3% | Reduced |
| Bank of Montreal | 14,075 | $371.3K | 0.00% | +770+5.8% | Added |
| CWM, LLC | 14,053 | $371.0K | 0.00% | −2,993−17.6% | Reduced |
| Circle Wealth Management, LLC | 14,002 | $369.4K | 0.01% | −3,715−21.0% | Reduced |
| Walleye Trading LLC | 13,875 | $366.0K | 0.01% | −16,050−53.6% | Reduced |
| Keybank National Association | 13,565 | $357.8K | 0.00% | −853−5.9% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 11,081 | $349.4K | 0.00% | +11,081 | New |
| Holocene Advisors, LP | 12,962 | $341.9K | 0.00% | +12,962 | New |
| Inceptionr LLC | 12,939 | $341.3K | 0.09% | +3,057+30.9% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 12,752 | $336.4K | 0.00% | +12,752 | New |
| Xponance, Inc. | 12,736 | $336.0K | 0.00% | −2,278−15.2% | Reduced |
| Teacher Retirement System of Texas | 12,705 | $335.2K | 0.00% | −11,401−47.3% | Reduced |
| State of Alaska, Department of Revenue | 12,136 | $320.0K | 0.00% | −1,345−10.0% | Reduced |
| Pinpoint Asset Management (Singapore) Pte. Ltd. | 12,050 | $317.9K | 0.07% | +12,050 | New |
| Cetera Investment Advisers | 11,901 | $313.9K | 0.00% | −3,075−20.5% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 11,895 | $313.8K | 0.00% | −497−4.0% | Reduced |
| The PNC Financial Services Group, Inc. | 11,820 | $311.8K | 0.00% | −2,893−19.7% | Reduced |
| Pathstone Holdings, LLC | 11,812 | $311.6K | 0.00% | −3,634−23.5% | Reduced |
| Yorktown Management & Research Co Inc | 11,300 | $298.1K | 0.24% | 00.0% | Unchanged |
| Banque Pictet & Cie SA | 10,770 | $284.1K | 0.00% | −2,533−19.0% | Reduced |
| State of Wyoming | 10,669 | $281.4K | 0.03% | −5,340−33.4% | Reduced |
| IMC-Chicago, LLC | 10,618 | $280.1K | 0.00% | −112,219−91.4% | Reduced |
| Mercer Global Advisors Inc | 10,502 | $277.0K | 0.00% | +1,977+23.2% | Added |
| American Century Companies Inc | 10,274 | $271.0K | 0.00% | 00.0% | Unchanged |
| Commerce Bank | 10,255 | $270.5K | 0.00% | −110−1.1% | Reduced |
| Stifel Financial Corp | 10,050 | $265.1K | 0.00% | +62+0.6% | Added |
| Federated Hermes, Inc. | 9,973 | $263.1K | 0.00% | −1,102−10.0% | Reduced |
| Profund Advisors LLC | 9,244 | $243.9K | 0.01% | +288+3.2% | Added |
| Securian Asset Management, Inc | 9,027 | $238.1K | 0.01% | −258−2.8% | Reduced |
| Mackenzie Financial Corp | 8,809 | $235.9K | 0.00% | −876−9.0% | Reduced |
| Prudential Financial Inc | 8,160 | $215.3K | 0.00% | −4,685−36.5% | Reduced |
| Evergreen Capital Management LLC | 8,048 | $212.3K | 0.00% | +8,048 | New |
| Aquatic Capital Management LLC | 7,994 | $210.9K | 0.01% | +7,994 | New |
| Jupiter Asset Management Ltd | 7,931 | $209.2K | 0.00% | +7,931 | New |
| Skandinaviska Enskilda Banken AB (publ) | 7,798 | $205.6K | 0.00% | +7,798 | New |
| Public Employees Retirement Association of Colorado | 7,635 | $201.0K | 0.00% | 00.0% | Unchanged |