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 |
|---|---|---|---|---|---|
| Paloma Partners Management Co | 0 | $0 | 0.00% | −75,000−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −71,708−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −62,974−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −53,934−100.0% | Sold out |
| Ecofi Investissements SA | 0 | $0 | 0.00% | −41,200−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −38,656−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −32,000−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −31,907−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −29,024−100.0% | Sold out |
| Lisanti Capital Growth, LLC | 0 | $0 | 0.00% | −27,940−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −22,778−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −22,728−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −20,222−100.0% | Sold out |
| Quantessence Capital LLC | 0 | $0 | 0.00% | −19,463−100.0% | Sold out |
| Voleon Capital Management LP | 0 | $0 | 0.00% | −14,099−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −11,822−100.0% | Sold out |
| Bayforest Capital Ltd | 0 | $0 | 0.00% | −11,808−100.0% | Sold out |
| Worldquant Millennium Advisors LLC | 0 | $0 | 0.00% | −11,407−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −10,393−100.0% | Sold out |
| Diversified Trust Co | 0 | $0 | 0.00% | −10,107−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −9,263−100.0% | Sold out |
| Semanteon Capital Management, LP | 0 | $0 | 0.00% | −8,504−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −8,391−100.0% | Sold out |
| Sherman Porfolios, LLC | 0 | $0 | 0.00% | −7,698−100.0% | Sold out |
| Johnson Investment Counsel Inc | 0 | $0 | 0.00% | −7,659−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −7,177−100.0% | Sold out |
| Centaurus Financial, Inc. | 0 | $0 | 0.00% | −5,516−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −975−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −595−100.0% | Sold out |
| Cloud Capital Management, LLC | 0 | $0 | 0.00% | −513−100.0% | Sold out |
| Rise Advisors, LLC | 0 | $0 | 0.00% | −424−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −380−100.0% | Sold out |
| Wealthspire Advisors, LLC | 0 | $0 | 0.00% | −290−100.0% | Sold out |
| Medallion Wealth Advisors, LLC | 0 | $0 | 0.00% | −250−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −220−100.0% | Sold out |
| Ci Investments Inc. | 0 | $0 | 0.00% | −207−100.0% | Sold out |
| LGT Financial Advisors LLC | 0 | $0 | 0.00% | −157−100.0% | Sold out |
| Harbour Investments, Inc. | 0 | $0 | 0.00% | −131−100.0% | Sold out |
| Mather Group, LLC. | 0 | $0 | 0.00% | −125−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −111−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −104−100.0% | Sold out |
| Heartwood Wealth Advisors LLC | 0 | $0 | 0.00% | −27−100.0% | Sold out |
| Bare Financial Services, Inc | 0 | $0 | 0.00% | −23−100.0% | Sold out |
| Atlantic Trust, LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| GPS Wealth Strategies Group, LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | – | – | – | – | Not filed |
| Point72 Hong Kong Ltd | – | – | – | – | Not filed |
| Synovus Financial Corp | – | – | – | – | Not filed |
| Point72 (DIFC) Ltd | – | – | – | – | Not filed |
| Point72 Asia (Singapore) Pte. Ltd. | – | – | – | – | Not filed |
| Point72 Europe (London) LLP | – | – | – | – | Not filed |
| Guerra Advisors Inc | – | – | – | – | Not filed |