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, Q2 2026
Institutional positions in Allegro Microsystems, Inc. as of Jun 30, 2026. 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
- 375
- +58 vs. Q1 2026
- Shares held
- 148.2M
- +9.97M (+7.2%) vs. Q1 2026
- Total value
- $10.2B
- +$5.91B (+136.7%) vs. Q1 2026
- New holders
- 101
- 117 more added
- Sold out
- 43
- 107 more reduced
5 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Allegro Microsystems, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Fieldview Capital Management, LLC | 0 | $0 | 0.00% | −10,251−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −9,886−100.0% | Sold out |
| Bailard, Inc. | 0 | $0 | 0.00% | −8,100−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −7,652−100.0% | Sold out |
| SIH Partners, LLLP | 0 | $0 | 0.00% | −6,872−100.0% | Sold out |
| Machina Capital S.A.S. | 0 | $0 | 0.00% | −6,847−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −6,685−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −3,515−100.0% | Sold out |
| Eurizon Capital SGR S.p.A. | 0 | $0 | 0.00% | −2,523−100.0% | Sold out |
| Federation des caisses Desjardins du Quebec | 0 | $0 | 0.00% | −1,646−100.0% | Sold out |
| Kemnay Advisory Services Inc. | 0 | $0 | 0.00% | −634−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −429−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −154−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −149−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −98−100.0% | Sold out |
| Atwood & Palmer Inc | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Rachor Investment Advisory Services, LLC | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Janus Henderson Group PLC | – | – | – | – | Not filed |
| TSG Advice Partners, LLC | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |
| Skopos Labs, Inc. | – | – | – | – | Not filed |
| Sunbelt Securities, Inc. | – | – | – | – | Not filed |