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 |
|---|---|---|---|---|---|
| Amalgamated Bank | 56,767 | $1.66M | 0.01% | −2,500−4.2% | Reduced |
| Mutual of America Capital Management LLC | 57,256 | $1.67M | 0.02% | −7,755−11.9% | Reduced |
| Janus Henderson Group PLC | 57,329 | $1.67M | 0.00% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 58,578 | $1.71M | 0.00% | +11,639+24.8% | Added |
| Van Eck Associates Corp | 60,707 | $1.77M | 0.00% | +30,890+103.6% | Added |
| Caption Management, LLC | 62,974 | $1.84M | 0.11% | +47,974+319.8% | Added |
| MetLife Investment Management | 63,706 | $1.86M | 0.01% | −6,561−9.3% | Reduced |
| State of New Jersey Common Pension Fund D | 68,882 | $2.01M | 0.01% | −3,810−5.2% | Reduced |
| Engineers Gate Manager LP | 69,166 | $2.02M | 0.02% | +69,166 | New |
| Quantbot Technologies LP | 71,708 | $2.09M | 0.06% | +54,528+317.4% | Added |
| HRT Financial LP | 74,395 | $2.17M | 0.01% | −56,436−43.1% | Reduced |
| Paloma Partners Management Co | 75,000 | $2.19M | 0.44% | +75,000 | New |
| Schroder Investment Management Group | 75,401 | $2.20M | 0.00% | +75,401 | New |
| Schonfeld Strategic Advisors LLC | 80,465 | $2.35M | 0.02% | −354,843−81.5% | Reduced |
| Summit Trail Advisors, LLC | 82,233 | $2.40M | 0.03% | +70,703+613.2% | Added |
| Manufacturers Life Insurance Company, The | 84,637 | $2.47M | 0.00% | −9,014−9.6% | Reduced |
| State of Tennessee, Treasury Department | 86,631 | $2.53M | 0.01% | −6,734−7.2% | Reduced |
| HSBC Holdings PLC | 86,851 | $2.53M | 0.00% | +48,911+128.9% | Added |
| SEI Investments Co | 88,128 | $2.57M | 0.00% | +1,776+2.1% | Added |
| Candriam Luxembourg S.C.A. | 89,175 | $2.60M | 0.01% | +89,175 | New |
| Jain Global LLC | 89,935 | $2.63M | 0.03% | +8,123+9.9% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 90,592 | $2.65M | 0.00% | −58,385−39.2% | Reduced |
| State Board of Administration of Florida Retirement System | 92,797 | $2.71M | 0.00% | +8,214+9.7% | Added |
| Price T Rowe Associates Inc | 96,630 | $2.82M | 0.00% | +7,303+8.2% | Added |
| Point72 Hong Kong Ltd | 98,300 | $2.87M | 0.13% | +98,300 | New |
| Royce & Associates LP | 102,230 | $2.99M | 0.03% | +102,230 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 105,967 | $3.09M | 0.00% | −10,956−9.4% | Reduced |
| State of Wisconsin Investment Board | 111,839 | $3.27M | 0.01% | −4,813−4.1% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 115,830 | $3.38M | 0.05% | 00.0% | Unchanged |
| California State Teachers Retirement System | 118,744 | $3.47M | 0.00% | +60.0% | Added |
| IMC-Chicago, LLC | 122,837 | $3.59M | 0.06% | +122,837 | New |
| Gotham Asset Management, LLC | 124,488 | $3.64M | 0.02% | +116,138+1,390.9% | Added |
| Susquehanna International Group, LLP | 126,758 | $3.70M | 0.01% | −27,356−17.8% | Reduced |
| Castleark Management LLC | 133,508 | $3.90M | 0.11% | +30,348+29.4% | Added |
| Marshall Wace, LLP | 138,086 | $4.03M | 0.00% | +138,086 | New |
| BNP Paribas Arbitrage, SA | 144,571 | $4.22M | 0.00% | +125,854+672.4% | Added |
| ArrowMark Colorado Holdings LLC | 149,649 | $4.37M | 0.08% | −77,728−34.2% | Reduced |
| Barclays PLC | 151,025 | $4.41M | 0.00% | +33,266+28.2% | Added |
| Wells Fargo & Company | 151,563 | $4.43M | 0.00% | −13,926−8.4% | Reduced |
| Two Sigma Investments, LP | 161,348 | $4.71M | 0.01% | −185,458−53.5% | Reduced |
| Trillium Asset Management, LLC | 166,544 | $4.86M | 0.13% | −144,285−46.4% | Reduced |
| Trexquant Investment LP | 189,448 | $5.53M | 0.06% | +189,448 | New |
| Retirement Systems of Alabama | 190,895 | $5.57M | 0.02% | −9,886−4.9% | Reduced |
| Legal & General Group Plc | 196,977 | $5.75M | 0.00% | −5,504−2.7% | Reduced |
| Jane Street Group, LLC | 210,348 | $6.14M | 0.01% | +210,348 | New |
| Man Group plc | 215,287 | $6.29M | 0.01% | +215,287 | New |
| Pier Capital, LLC | 235,118 | $6.87M | 1.07% | −27,035−10.3% | Reduced |
| Nuveen, LLC | 241,927 | $7.06M | 0.00% | −3,702−1.5% | Reduced |
| Neuberger Berman Group LLC | 249,564 | $7.29M | 0.01% | −994,851−79.9% | Reduced |
| AQR Capital Management LLC | 250,384 | $7.31M | 0.00% | +229,655+1,107.9% | Added |
| Swiss National Bank | 250,900 | $7.33M | 0.00% | +4,700+1.9% | Added |
| Cubist Systematic Strategies, LLC | 273,675 | $7.99M | 0.11% | +273,675 | New |
| Peregrine Capital Management LLC | 274,477 | $8.01M | 0.24% | +39,552+16.8% | Added |
| Rhumbline Advisers | 312,924 | $9.14M | 0.01% | −16,946−5.1% | Reduced |
| Ameriprise Financial Inc | 326,922 | $9.55M | 0.00% | −90,232−21.6% | Reduced |
| Citadel Advisors LLC | 331,631 | $9.68M | 0.01% | −1,187,777−78.2% | Reduced |
| UBS Asset Management Americas Inc | 337,478 | $9.85M | 0.00% | −145,845−30.2% | Reduced |
| Squarepoint Ops LLC | 339,926 | $9.93M | 0.02% | +339,926 | New |
| Goldman Sachs Group Inc | 345,346 | $10.1M | 0.00% | +107,785+45.4% | Added |
| Allspring Global Investments Holdings, LLC | 360,186 | $10.2M | 0.02% | −30,918−7.9% | Reduced |
| S Squared Technology, LLC | 397,451 | $11.6M | 4.41% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 498,331 | $14.6M | 0.03% | −973,758−66.1% | Reduced |
| First Trust Advisors LP | 551,593 | $16.1M | 0.01% | −24,885−4.3% | Reduced |
| UBS Group AG | 579,278 | $16.9M | 0.00% | −80,362−12.2% | Reduced |
| Royal Bank of Canada | 642,474 | $18.8M | 0.00% | −206,037−24.3% | Reduced |
| GW&K Investment Management, LLC | 683,505 | $20.0M | 0.18% | −21,313−3.0% | Reduced |
| Silvercrest Asset Management Group LLC | 685,061 | $20.0M | 0.13% | −5,304−0.8% | Reduced |
| Bank of New York Mellon Corp | 793,515 | $23.2M | 0.00% | −248,905−23.9% | Reduced |
| Loomis Sayles & Co L P | 802,023 | $23.4M | 0.03% | +135,662+20.4% | Added |
| Millennium Management LLC | 802,626 | $23.4M | 0.02% | +123,008+18.1% | Added |
| Frontier Capital Management Co LLC | 895,797 | $26.2M | 0.23% | −1,470,160−62.1% | Reduced |
| Raymond James Financial Inc | 926,358 | $27.0M | 0.01% | −328,824−26.2% | Reduced |
| Voya Investment Management LLC | 942,076 | $27.5M | 0.03% | +225,633+31.5% | Added |
| Bank of America Corp | 952,679 | $27.8M | 0.00% | +493,910+107.7% | Added |
| Point72 Asset Management, L.P. | 986,800 | $28.8M | 0.06% | +692,245+235.0% | Added |
| Northern Trust Corp | 1,010,857 | $29.5M | 0.00% | −47,867−4.5% | Reduced |
| T. Rowe Price Investment Management, Inc. | 1,085,198 | $31.7M | 0.02% | −202,643−15.7% | Reduced |
| Wellington Management Group LLP | 1,160,917 | $33.9M | 0.01% | −1,475,922−56.0% | Reduced |
| Analog Century Management LP | 1,174,953 | $34.3M | 1.84% | −196,637−14.3% | Reduced |
| Charles Schwab Investment Management Inc | 1,294,993 | $37.8M | 0.01% | +55,668+4.5% | Added |
| Segall Bryant & Hamill, LLC | 1,323,726 | $38.7M | 0.51% | −4,528−0.3% | Reduced |
| Adage Capital Partners GP, L.L.C. | 1,576,627 | $46.0M | 0.07% | −600,933−27.6% | Reduced |
| Principal Financial Group Inc | 1,914,074 | $55.9M | 0.03% | −243,263−11.3% | Reduced |
| Morgan Stanley | 1,939,029 | $56.6M | 0.00% | −137,323−6.6% | Reduced |
| Dimensional Fund Advisors LP | 1,970,550 | $57.5M | 0.01% | −137,254−6.5% | Reduced |
| Macquarie Group Ltd | 2,197,274 | $64.2M | 0.07% | −382,054−14.8% | Reduced |
| Geode Capital Management, LLC | 2,369,129 | $69.2M | 0.00% | −36,857−1.5% | Reduced |
| Alliancebernstein L.P. | 2,690,496 | $78.6M | 0.02% | −69,376−2.5% | Reduced |
| Clearbridge Investments, LLC | 2,932,806 | $85.6M | 0.06% | −230,958−7.3% | Reduced |
| State Street Corp | 5,281,285 | $154.2M | 0.01% | +88,284+1.7% | Added |
| Invesco Ltd. | 5,312,427 | $155.1M | 0.02% | −942,148−15.1% | Reduced |
| JPMorgan Chase & Co | 7,731,267 | $225.8M | 0.01% | −282,231−3.5% | Reduced |
| BlackRock, Inc. | 11,377,418 | $332.2M | 0.01% | −412,450−3.5% | Reduced |
| Vanguard Group Inc | 14,293,465 | $417.4M | 0.01% | +87,526+0.6% | Added |
| Capital Research Global Investors | 16,824,722 | $491.3M | 0.09% | +920,365+5.8% | Added |
| FMR LLC | 27,467,843 | $802.1M | 0.04% | +220,370+0.8% | Added |
| Summit Partners Public Asset Management, LLC | 0 | $0 | 0.00% | −1,154,000−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −176,538−100.0% | Sold out |
| G2 Investment Partners Management LLC | 0 | $0 | 0.00% | −130,000−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −128,830−100.0% | Sold out |