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, Q3 2025
Institutional positions in Allegro Microsystems, Inc. as of Sep 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
- 296
- +25 vs. Q2 2025
- Shares held
- 135.9M
- −8.71M (−6.0%) vs. Q2 2025
- Total value
- $3.97B
- −$974.6M (−19.7%) vs. Q2 2025
- New holders
- 66
- 79 more added
- Sold out
- 41
- 108 more reduced
3 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Allegro Microsystems, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| New York State Common Retirement Fund | 50,938 | $1.49M | 0.00% | −3,200−5.9% | Reduced |
| XTX Topco Ltd | 50,358 | $1.47M | 0.08% | +40,907+432.8% | Added |
| Acadian Asset Management LLC | 48,240 | $1.40M | 0.00% | +48,240 | New |
| Fox Run Management, L.L.C. | 47,590 | $1.39M | 0.22% | +47,590 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 42,732 | $1.25M | 0.00% | 00.0% | Unchanged |
| Natixis Advisors, L.P. | 41,687 | $1.22M | 0.00% | −1,043−2.4% | Reduced |
| Ecofi Investissements SA | 41,200 | $1.20M | 1.44% | +14,100+52.0% | Added |
| Massachusetts Financial Services Co | 40,390 | $1.18M | 0.00% | −472,655−92.1% | Reduced |
| Needham Investment Management LLC | 40,000 | $1.17M | 0.08% | −10,000−20.0% | Reduced |
| Handelsbanken Fonder AB | 40,000 | $1.17M | 0.00% | +6,000+17.6% | Added |
| Sphera Management Technology Funds Ltd | 40,000 | $1.17M | 0.59% | +40,000 | New |
| Teachers Retirement System of the State of Kentucky | 39,633 | $1.16M | 0.01% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 39,247 | $1.15M | 0.00% | +291+0.7% | Added |
| Yousif Capital Management, LLC | 38,749 | $1.13M | 0.01% | −4,902−11.2% | Reduced |
| Axq Capital, LP | 38,656 | $1.13M | 0.43% | +38,656 | New |
| Moody National Bank Trust Division | 38,467 | $1.12M | 0.09% | 00.0% | Unchanged |
| Arizona State Retirement System | 38,293 | $1.12M | 0.01% | +685+1.8% | Added |
| LPL Financial LLC | 37,510 | $1.10M | 0.00% | +1,415+3.9% | Added |
| Envestnet Asset Management Inc | 37,383 | $1.09M | 0.00% | −15,273−29.0% | Reduced |
| Louisiana State Employees Retirement System | 34,500 | $1.01M | 0.02% | −2,300−6.3% | Reduced |
| New York State Teachers Retirement System | 32,300 | $943.0K | 0.00% | −1,300−3.9% | Reduced |
| LMR Partners LLP | 32,000 | $934.4K | 0.01% | +32,000 | New |
| Comerica Bank | 31,947 | $932.8K | 0.00% | −47,043−59.6% | Reduced |
| Magnetar Financial LLC | 31,907 | $931.7K | 0.01% | +31,907 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 31,818 | $929.1K | 0.00% | −1,770−5.3% | Reduced |
| Lazard Asset Management LLC | 31,652 | $924.2K | 0.00% | −146,170−82.2% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 31,652 | $924.2K | 0.00% | 00.0% | Unchanged |
| Walleye Trading LLC | 29,925 | $873.8K | 0.01% | +29,925 | New |
| State of Michigan Retirement System | 29,500 | $861.4K | 0.00% | −1,900−6.1% | Reduced |
| Verition Fund Management LLC | 29,024 | $847.5K | 0.00% | −29,762−50.6% | Reduced |
| Alps Advisors Inc | 28,983 | $846.3K | 0.00% | +845+3.0% | Added |
| Thrivent Financial for Lutherans | 28,483 | $832.0K | 0.00% | −2,298−7.5% | Reduced |
| Lisanti Capital Growth, LLC | 27,940 | $815.8K | 0.20% | −82,035−74.6% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 27,634 | $806.9K | 0.01% | −1,554−5.3% | Reduced |
| KLP Kapitalforvaltning AS | 27,500 | $803.0K | 0.00% | 00.0% | Unchanged |
| New Mexico Educational Retirement Board | 27,081 | $791.0K | 0.02% | −4,800−15.1% | Reduced |
| Parallax Volatility Advisers, L.P. | 26,298 | $767.9K | 0.02% | +26,298 | New |
| SG Americas Securities, LLC | 26,123 | $763.0K | 0.00% | +7,469+40.0% | Added |
| Prentiss Smith & Co Inc | 25,060 | $731.8K | 0.41% | +25,060 | New |
| Oregon Public Employees Retirement Fund | 24,937 | $728.2K | 0.01% | −1,800−6.7% | Reduced |
| Teacher Retirement System of Texas | 24,106 | $703.9K | 0.00% | +4,533+23.2% | Added |
| Synovus Financial Corp | 23,670 | $691.2K | 0.01% | −77−0.3% | Reduced |
| Ensign Peak Advisors, Inc | 23,466 | $685.2K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 23,240 | $678.6K | 0.02% | −2,142−8.4% | Reduced |
| Sherbrooke Park Advisers LLC | 22,778 | $665.1K | 0.31% | +22,778 | New |
| Prelude Capital Management, LLC | 22,728 | $663.7K | 0.05% | +22,728 | New |
| Creative Planning | 22,677 | $662.2K | 0.00% | +4,085+22.0% | Added |
| Advisors Asset Management, Inc. | 22,499 | $657.0K | 0.01% | +466+2.1% | Added |
| Guggenheim Capital LLC | 20,234 | $590.8K | 0.00% | +1,533+8.2% | Added |
| Y-Intercept (Hong Kong) Ltd | 20,222 | $590.5K | 0.01% | +20,222 | New |
| Ethic Inc. | 19,600 | $572.3K | 0.01% | −4,158−17.5% | Reduced |
| Quantessence Capital LLC | 19,463 | $568.3K | 0.18% | +19,463 | New |
| Victory Capital Management Inc | 18,692 | $545.8K | 0.00% | −3,743−16.7% | Reduced |
| Vontobel Holding Ltd. | 17,724 | $517.5K | 0.00% | +17,724 | New |
| Circle Wealth Management, LLC | 17,717 | $517.3K | 0.01% | 00.0% | Unchanged |
| Pictet Asset Management Holding SA | 17,400 | $508.1K | 0.00% | 00.0% | Unchanged |
| Virginia Retirement Systems Et Al | 17,269 | $504.3K | 0.00% | +3,200+22.7% | Added |
| CWM, LLC | 17,046 | $498.0K | 0.00% | +13,369+363.6% | Added |
| ProShare Advisors LLC | 16,704 | $487.8K | 0.00% | −4,668−21.8% | Reduced |
| Graham Capital Management, L.P. | 16,336 | $477.0K | 0.02% | +10,289+170.2% | Added |
| Pacer Advisors, Inc. | 16,310 | $476.3K | 0.00% | +16,310 | New |
| State of Wyoming | 16,009 | $467.5K | 0.05% | +12,943+422.1% | Added |
| Pathstone Holdings, LLC | 15,446 | $451.0K | 0.00% | −4,679−23.2% | Reduced |
| Xponance, Inc. | 15,014 | $438.4K | 0.00% | −2,165−12.6% | Reduced |
| Deutsche Bank AG | 14,993 | $437.8K | 0.00% | +1,087+7.8% | Added |
| Cetera Investment Advisers | 14,976 | $437.3K | 0.00% | +14,976 | New |
| Point72 (DIFC) Ltd | 14,812 | $432.5K | 0.03% | +14,812 | New |
| The PNC Financial Services Group, Inc. | 14,713 | $429.6K | 0.00% | +381+2.7% | Added |
| Russell Investments Group, Ltd. | 14,496 | $423.3K | 0.00% | +2,853+24.5% | Added |
| Keybank National Association | 14,418 | $421.0K | 0.00% | −4,997−25.7% | Reduced |
| Vident Advisory, LLC | 14,269 | $416.7K | 0.00% | +2,446+20.7% | Added |
| Voleon Capital Management LP | 14,099 | $411.7K | 0.01% | +14,099 | New |
| JustInvest LLC | 13,849 | $404.4K | 0.00% | −374−2.6% | Reduced |
| State of Alaska, Department of Revenue | 13,481 | $393.0K | 0.00% | −1,191−8.1% | Reduced |
| Bank of Montreal | 13,305 | $388.5K | 0.00% | −1,706−11.4% | Reduced |
| Banque Pictet & Cie SA | 13,303 | $388.4K | 0.00% | −86−0.6% | Reduced |
| Prudential Financial Inc | 12,845 | $375.1K | 0.00% | −2,839−18.1% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 12,392 | $361.8K | 0.00% | −14,491−53.9% | Reduced |
| Brevan Howard Capital Management LP | 11,822 | $345.2K | 0.00% | +11,822 | New |
| Bayforest Capital Ltd | 11,808 | $344.8K | 0.16% | −7,192−37.9% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 11,504 | $335.9K | 0.00% | −2,838−19.8% | Reduced |
| Worldquant Millennium Advisors LLC | 11,407 | $333.1K | 0.00% | +11,407 | New |
| Yorktown Management & Research Co Inc | 11,300 | $330.0K | 0.26% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 11,075 | $323.4K | 0.00% | −1,129−9.3% | Reduced |
| Two Sigma Advisers, LP | 10,800 | $315.4K | 0.00% | +10,800 | New |
| Virtu Financial LLC | 10,393 | $303.0K | 0.02% | +10,393 | New |
| Commerce Bank | 10,365 | $302.7K | 0.00% | −565−5.2% | Reduced |
| American Century Companies Inc | 10,274 | $300.0K | 0.00% | +955+10.2% | Added |
| Diversified Trust Co | 10,107 | $295.1K | 0.01% | +10,107 | New |
| Point72 Asia (Singapore) Pte. Ltd. | 10,049 | $293.4K | 0.05% | +10,049 | New |
| CI Private Wealth, LLC | 10,034 | $293.0K | 0.00% | −7,205−41.8% | Reduced |
| Stifel Financial Corp | 9,988 | $291.6K | 0.00% | +9,988 | New |
| Inceptionr LLC | 9,882 | $288.6K | 0.07% | +9,882 | New |
| Amundi | 10,042 | $283.4K | 0.00% | +31+0.3% | Added |
| Mackenzie Financial Corp | 9,685 | $282.8K | 0.00% | +9,685 | New |
| Securian Asset Management, Inc | 9,285 | $271.1K | 0.01% | −590−6.0% | Reduced |
| Two Sigma Securities, LLC | 9,263 | $270.5K | 0.04% | +9,263 | New |
| Profund Advisors LLC | 8,956 | $261.5K | 0.01% | +15+0.2% | Added |
| Mercer Global Advisors Inc | 8,525 | $248.9K | 0.00% | +8,525 | New |
| Semanteon Capital Management, LP | 8,504 | $248.3K | 0.31% | +8,504 | New |