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 |
|---|---|---|---|---|---|
| Simplex Trading, LLC | 8,391 | $245.0K | 0.01% | +8,391 | New |
| Sherman Porfolios, LLC | 7,698 | $224.8K | 0.08% | +7,698 | New |
| Johnson Investment Counsel Inc | 7,659 | $223.6K | 0.00% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 7,635 | $223.0K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 7,609 | $222.2K | 0.00% | −338−4.3% | Reduced |
| Group One Trading, L.P. | 7,177 | $209.6K | 0.01% | −45,684−86.4% | Reduced |
| Advisor Group Holdings, Inc. | 6,165 | $189.0K | 0.00% | +574+10.3% | Added |
| Canada Pension Plan Investment Board | 6,200 | $181.0K | 0.00% | +100+1.6% | Added |
| Assetmark, Inc | 6,040 | $176.4K | 0.00% | −302−4.8% | Reduced |
| Centaurus Financial, Inc. | 5,516 | $161.0K | 0.01% | +5,516 | New |
| Quest Partners LLC | 5,074 | $148.2K | 0.01% | −2,684−34.6% | Reduced |
| 1620 Investment Advisors, Inc. | 4,782 | $139.6K | 0.09% | −162−3.3% | Reduced |
| Global Retirement Partners, LLC | 4,494 | $131.2K | 0.00% | +4,373+3,614.0% | Added |
| Point72 Europe (London) LLP | 4,181 | $122.1K | 0.01% | +4,181 | New |
| Nisa Investment Advisors, LLC | 3,945 | $115.2K | 0.00% | +1,735+78.5% | Added |
| KBC Group NV | 3,694 | $108.0K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 3,177 | $92.8K | 0.01% | +308+10.7% | Added |
| Tower Research Capital LLC (TRC) | 3,026 | $88.4K | 0.00% | +1,025+51.2% | Added |
| Rockefeller Capital Management L.P. | 2,958 | $86.4K | 0.00% | +2,958 | New |
| STRS Ohio | 2,943 | $85.9K | 0.00% | −26,179−89.9% | Reduced |
| GWM Advisors LLC | 2,483 | $72.5K | 0.00% | +2,463+12,315.0% | Added |
| TD Waterhouse Canada Inc. | 2,459 | $69.9K | 0.00% | −579−19.1% | Reduced |
| Umb Bank N A | 1,861 | $54.3K | 0.00% | +26+1.4% | Added |
| SRS Capital Advisors, Inc. | 1,841 | $53.8K | 0.00% | +1,367+288.4% | Added |
| US Bancorp | 1,670 | $48.8K | 0.00% | +91+5.8% | Added |
| Fifth Third Bancorp | 1,267 | $37.0K | 0.00% | +45+3.7% | Added |
| Essential Partners LLC | 1,200 | $35.0K | 0.01% | +1,200 | New |
| Quarry LP | 975 | $28.5K | 0.01% | −523−34.9% | Reduced |
| Quent Capital, LLC | 946 | $27.6K | 0.00% | +946 | New |
| CoreCap Advisors, LLC | 900 | $26.3K | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 894 | $26.1K | 0.00% | +47+5.5% | Added |
| Hantz Financial Services, Inc. | 901 | $26.0K | 0.00% | +419+86.9% | Added |
| Sound Income Strategies, LLC | 855 | $23.7K | 0.00% | +163+23.6% | Added |
| Caitong International Asset Management Co., Ltd | 780 | $22.8K | 0.02% | +780 | New |
| Quadrant Capital Group LLC | 779 | $22.7K | 0.00% | +779 | New |
| Allworth Financial LP | 678 | $19.8K | 0.00% | +184+37.2% | Added |
| Signaturefd, LLC | 606 | $17.7K | 0.00% | −22−3.5% | Reduced |
| Hurley Capital, LLC | 603 | $17.6K | 0.01% | 00.0% | Unchanged |
| FNY Investment Advisers, LLC | 595 | $17.0K | 0.01% | +260+77.6% | Added |
| EverSource Wealth Advisors, LLC | 574 | $16.8K | 0.00% | −214−27.2% | Reduced |
| SBI Securities Co., Ltd. | 519 | $15.2K | 0.00% | +234+82.1% | Added |
| Clearstead Advisors, LLC | 481 | $14.0K | 0.00% | +378+367.0% | Added |
| Cloud Capital Management, LLC | 513 | $14.0K | 0.01% | +513 | New |
| Covestor Ltd | 441 | $13.0K | 0.01% | −201−31.3% | Reduced |
| Bessemer Group Inc | 432 | $13.0K | 0.00% | 00.0% | Unchanged |
| Rise Advisors, LLC | 424 | $12.4K | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 394 | $11.5K | 0.00% | +394 | New |
| Advisory Services Network, LLC | 380 | $11.1K | 0.00% | +380 | New |
| Rothschild Investment LLC | 377 | $11.0K | 0.00% | +337+842.5% | Added |
| Global X Japan Co., Ltd. | 315 | $9.20K | 0.00% | −172−35.3% | Reduced |
| Wealthspire Advisors, LLC | 290 | $8.47K | 0.00% | +290 | New |
| Huntington National Bank | 258 | $7.53K | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 253 | $7.39K | 0.00% | 00.0% | Unchanged |
| Medallion Wealth Advisors, LLC | 250 | $7.30K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 234 | $6.83K | 0.00% | +10+4.5% | Added |
| Spire Wealth Management | 226 | $6.60K | 0.00% | 00.0% | Unchanged |
| Optiver Holding B.V. | 220 | $6.42K | 0.00% | +220 | New |
| Ci Investments Inc. | 207 | $6.00K | 0.00% | +207 | New |
| Massmutual Trust Co FSB | 201 | $5.87K | 0.00% | 00.0% | Unchanged |
| Rakuten Securities, Inc. | 178 | $5.20K | 0.00% | +166+1,383.3% | Added |
| LGT Financial Advisors LLC | 157 | $4.58K | 0.01% | 00.0% | Unchanged |
| Truvestments Capital LLC | 154 | $4.50K | 0.00% | +154 | New |
| Versant Capital Management, Inc | 147 | $4.29K | 0.00% | +127+635.0% | Added |
| Leonteq Securities AG | 135 | $3.94K | 0.00% | −45−25.0% | Reduced |
| Harbour Investments, Inc. | 131 | $3.83K | 0.00% | +131 | New |
| Mather Group, LLC. | 125 | $3.65K | 0.00% | +125 | New |
| Concord Wealth Partners | 120 | $3.50K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 111 | $3.24K | 0.00% | +111 | New |
| Principal Securities, Inc. | 104 | $3.04K | 0.00% | −228−68.7% | Reduced |
| Bell Investment Advisors, Inc | 101 | $2.95K | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 104 | $2.94K | 0.00% | −90−46.4% | Reduced |
| Farmers & Merchants Investments Inc | 85 | $2.48K | 0.00% | 00.0% | Unchanged |
| Kilter Group LLC | 81 | $2.37K | 0.00% | +17+26.6% | Added |
| Jones Financial Companies LLLP | 61 | $1.81K | 0.00% | −209−77.4% | Reduced |
| Ronald Blue Trust, Inc. | 46 | $1.34K | 0.00% | 00.0% | Unchanged |
| Root Financial Partners, LLC | 42 | $1.23K | 0.00% | +42 | New |
| Larson Financial Group LLC | 38 | $1.11K | 0.00% | +38 | New |
| Fortitude Family Office, LLC | 35 | $1.02K | 0.00% | 00.0% | Unchanged |
| Guerra Advisors Inc | 30 | $876 | 0.00% | +30 | New |
| Cornerstone Planning Group LLC | 12 | $809 | 0.00% | −3−20.0% | Reduced |
| IFP Advisors, Inc | 27 | $788 | 0.00% | +27 | Added |
| Heartwood Wealth Advisors LLC | 27 | $788 | 0.00% | +27 | New |
| Bogart Wealth, LLC | 23 | $672 | 0.00% | 00.0% | Unchanged |
| Bare Financial Services, Inc | 23 | $672 | 0.00% | 00.0% | Unchanged |
| Atlantic Trust, LLC | 20 | $584 | 0.00% | 00.0% | Unchanged |
| Cromwell Holdings LLC | 19 | $555 | 0.00% | 00.0% | Unchanged |
| MV Capital Management, Inc. | 14 | $409 | 0.00% | 00.0% | Unchanged |
| South State Corp. | 10 | $292 | 0.00% | 00.0% | Unchanged |
| Kayne Anderson Rudnick Investment Management LLC | 9 | $263 | 0.00% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 9 | $263 | 0.00% | 00.0% | Unchanged |
| IMA Wealth, Inc. | 8 | $234 | 0.00% | 00.0% | Unchanged |
| GPS Wealth Strategies Group, LLC | 6 | $175 | 0.00% | 00.0% | Unchanged |
| Creative Financial Designs Inc | 5 | $146 | 0.00% | 00.0% | Unchanged |
| Atlantic Union Bankshares Corp | 5 | $146 | 0.00% | 00.0% | Unchanged |
| TFC Financial Management | 1 | $30 | 0.00% | 00.0% | Unchanged |
| Avion Wealth | 34 | $0 | 0.00% | +17+100.0% | 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 |