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, Q1 2026
Institutional positions in Allegro Microsystems, Inc. as of Mar 31, 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
- 322
- +33 vs. Q4 2025
- Shares held
- 138.3M
- +17.5M (+14.5%) vs. Q4 2025
- Total value
- $4.32B
- +$1.13B (+35.5%) vs. Q4 2025
- New holders
- 69
- 126 more added
- Sold out
- 36
- 86 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Allegro Microsystems, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Engineers Gate Manager LP | 36,541 | $1.15M | 0.01% | −383,059−91.3% | Reduced |
| Public Employees Retirement System of Ohio | 36,618 | $1.15M | 0.00% | −1,275−3.4% | Reduced |
| Tudor Investment Corp Et Al | 37,128 | $1.17M | 0.01% | +11,463+44.7% | Added |
| Jones Financial Companies LLLP | 39,942 | $1.20M | 0.00% | +39,564+10,466.7% | Added |
| Handelsbanken Fonder AB | 40,000 | $1.26M | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 40,342 | $1.27M | 0.00% | −47,958−54.3% | Reduced |
| Teachers Retirement System of the State of Kentucky | 40,633 | $1.28M | 0.01% | +1,000+2.5% | Added |
| Van Eck Associates Corp | 41,766 | $1.32M | 0.00% | −13,730−24.7% | Reduced |
| Maverick Capital LtdSuperinvestorMaverick Capital | 42,224 | $1.33M | 0.02% | +42,224 | New |
| ExodusPoint Capital Management, LP | 44,900 | $1.42M | 0.01% | +44,900 | New |
| Envestnet Asset Management Inc | 44,940 | $1.42M | 0.00% | +8,131+22.1% | Added |
| Y-Intercept (Hong Kong) Ltd | 45,132 | $1.42M | 0.03% | +45,132 | New |
| New York State Common Retirement Fund | 46,338 | $1.46M | 0.00% | −4,600−9.0% | Reduced |
| Gsa Capital Partners LLP | 46,767 | $1.48M | 0.09% | +46,767 | New |
| Natixis Advisors, L.P. | 47,380 | $1.49M | 0.00% | +8,050+20.5% | Added |
| Mutual of America Capital Management LLC | 47,575 | $1.50M | 0.02% | −4,043−7.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 48,604 | $1.53M | 0.00% | +5,872+13.7% | Added |
| Summit Trail Advisors, LLC | 50,223 | $1.58M | 0.02% | −42,283−45.7% | Reduced |
| Vanguard Global Advisers, LLC | 50,746 | $1.60M | 0.00% | +50,746 | New |
| Boothbay Fund Management, LLC | 51,418 | $1.62M | 0.04% | +51,418 | New |
| Treasurer of the State of North Carolina | 52,687 | $1.66M | 0.01% | +1,122+2.2% | Added |
| Police & Firemen's Retirement System of New Jersey | 53,322 | $1.68M | 0.01% | +1,045+2.0% | Added |
| Guggenheim Capital LLC | 53,690 | $1.69M | 0.01% | +8,119+17.8% | Added |
| Summit Partners Public Asset Management, LLC | 54,000 | $1.70M | 0.08% | +54,000 | New |
| Needham Investment Management LLC | 55,000 | $1.73M | 0.09% | +15,000+37.5% | Added |
| BW Gestao de Investimentos Ltda. | 55,000 | $1.73M | 0.08% | +55,000 | New |
| Amalgamated Bank | 55,796 | $1.76M | 0.01% | +1,471+2.7% | Added |
| Sphera Management Technology Funds Ltd | 57,150 | $1.80M | 1.02% | +17,150+42.9% | Added |
| Janus Henderson Group PLC | 57,329 | $1.81M | 0.00% | 00.0% | Unchanged |
| Neuberger Berman Group LLC | 57,977 | $1.83M | 0.00% | −61,764−51.6% | Reduced |
| MetLife Investment Management | 61,051 | $1.92M | 0.01% | +463+0.8% | Added |
| State of New Jersey Common Pension Fund D | 62,022 | $1.96M | 0.01% | −30,906−33.3% | Reduced |
| Entropy Technologies, LP | 67,719 | $2.14M | 0.10% | +31,824+88.7% | Added |
| XTX Topco Ltd | 68,567 | $2.16M | 0.04% | +42,929+167.4% | Added |
| Massachusetts Financial Services Co | 69,297 | $2.18M | 0.00% | −10,860−13.5% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 70,956 | $2.24M | 0.00% | −3,410−4.6% | Reduced |
| Wells Fargo & Company | 73,461 | $2.32M | 0.00% | +8,088+12.4% | Added |
| State of Tennessee, Treasury Department | 79,237 | $2.50M | 0.01% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 81,072 | $2.56M | 0.00% | −1,178−1.4% | Reduced |
| Candriam Luxembourg S.C.A. | 86,073 | $2.71M | 0.01% | −1,815−2.1% | Reduced |
| State Board of Administration of Florida Retirement System | 92,797 | $2.93M | 0.01% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 94,953 | $2.99M | 0.01% | −2,656−2.7% | Reduced |
| Brevan Howard Capital Management LP | 95,099 | $3.00M | 0.03% | +95,099 | New |
| Russell Investments Group, Ltd. | 96,083 | $3.03M | 0.00% | +74,834+352.2% | Added |
| Citigroup Inc | 106,154 | $3.35M | 0.00% | −147−0.1% | Reduced |
| Price T Rowe Associates Inc | 113,799 | $3.59M | 0.00% | +12,433+12.3% | Added |
| Susquehanna International Group, LLP | 115,383 | $3.64M | 0.00% | −18,897−14.1% | Reduced |
| Vanguard Asset Management, Ltd | 116,069 | $3.66M | 0.00% | +116,069 | New |
| ArrowMark Colorado Holdings LLC | 120,784 | $3.81M | 0.10% | −18,977−13.6% | Reduced |
| Canada Pension Plan Investment Board | 122,000 | $3.85M | 0.00% | +104,000+577.8% | Added |
| Renaissance Technologies LLC | 123,900 | $3.91M | 0.01% | −312,300−71.6% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 127,393 | $4.02M | 0.01% | +43,583+52.0% | Added |
| Walleye Capital LLC | 130,668 | $4.12M | 0.03% | +127,063+3,524.6% | Added |
| Trexquant Investment LP | 133,800 | $4.22M | 0.03% | +54,314+68.3% | Added |
| Quantinno Capital Management LP | 133,902 | $4.22M | 0.01% | +68,549+104.9% | Added |
| Trillium Asset Management, LLC | 127,557 | $4.44M | 0.15% | −8,464−6.2% | Reduced |
| Castleark Management LLC | 147,420 | $4.65M | 0.15% | +147,420 | New |
| California State Teachers Retirement System | 149,826 | $4.72M | 0.00% | +26,828+21.8% | Added |
| Legal & General Group Plc | 164,671 | $5.19M | 0.00% | −20,977−11.3% | Reduced |
| Roubaix Capital, LLC | 169,993 | $5.36M | 2.50% | +169,993 | New |
| Kettle Hill Capital Management, LLC | 181,531 | $5.72M | 1.43% | +181,531 | New |
| Retirement Systems of Alabama | 193,195 | $6.09M | 0.02% | +3,340+1.8% | Added |
| G2 Investment Partners Management LLC | 208,569 | $6.58M | 1.62% | +208,569 | New |
| Granahan Investment Management Inc | 215,001 | $6.78M | 0.33% | +125,144+139.3% | Added |
| SEI Investments Co | 218,976 | $6.90M | 0.01% | +122,065+126.0% | Added |
| Pier Capital, LLC | 226,566 | $7.14M | 1.18% | −4,618−2.0% | Reduced |
| Balyasny Asset Management LLC | 245,910 | $7.75M | 0.02% | −564,550−69.7% | Reduced |
| Swiss National Bank | 256,400 | $8.08M | 0.00% | +1,000+0.4% | Added |
| Peregrine Capital Management LLC | 259,764 | $8.19M | 0.30% | −11,124−4.1% | Reduced |
| HRT Financial LP | 261,772 | $8.25M | 0.02% | +171,428+189.8% | Added |
| Frontier Capital Management Co LLC | 264,031 | $8.32M | 0.09% | −260,900−49.7% | Reduced |
| Sirios Capital Management L P | 298,421 | $9.41M | 1.14% | +298,421 | New |
| Man Group plc | 306,349 | $9.66M | 0.02% | −80,756−20.9% | Reduced |
| Jacobs Levy Equity Management, Inc | 308,102 | $9.71M | 0.04% | +308,102 | New |
| Rhumbline Advisers | 308,407 | $9.72M | 0.01% | +8,192+2.7% | Added |
| Gotham Asset Management, LLC | 312,246 | $9.85M | 0.03% | +239,153+327.2% | Added |
| Allspring Global Investments Holdings, LLC | 307,624 | $10.2M | 0.02% | −48,402−13.6% | Reduced |
| AQR Capital Management LLC | 345,126 | $10.3M | 0.00% | +17,153+5.2% | Added |
| UBS Asset Management Americas Inc | 345,057 | $10.9M | 0.00% | +14,348+4.3% | Added |
| Ameriprise Financial Inc | 359,282 | $11.3M | 0.00% | −14,208−3.8% | Reduced |
| Citadel Advisors LLC | 399,444 | $12.6M | 0.01% | −2,161,076−84.4% | Reduced |
| First Trust Advisors LP | 414,897 | $13.1M | 0.01% | −34,083−7.6% | Reduced |
| UBS Group AG | 435,381 | $13.7M | 0.00% | +161,082+58.7% | Added |
| S Squared Technology, LLC | 457,451 | $14.4M | 5.46% | 00.0% | Unchanged |
| Talos Asset Management LP | 493,173 | $15.5M | 2.66% | −67,027−12.0% | Reduced |
| Lightrock Netherlands B.V. | 507,990 | $16.0M | 3.61% | +153,600+43.3% | Added |
| Lord, Abbett & Co. LLC | 530,455 | $16.7M | 0.05% | +530,455 | New |
| T. Rowe Price Investment Management, Inc. | 561,344 | $17.7M | 0.01% | +211,995+60.7% | Added |
| Two Sigma Investments, LP | 639,841 | $20.2M | 0.02% | +328,916+105.8% | Added |
| GW&K Investment Management, LLC | 659,576 | $20.8M | 0.18% | −9,570−1.4% | Reduced |
| Wellington Management Group LLP | 673,096 | $21.2M | 0.00% | −433,241−39.2% | Reduced |
| Silvercrest Asset Management Group LLC | 707,891 | $22.3M | 0.16% | +32,188+4.8% | Added |
| Aperture Investors, LLC | 709,674 | $22.4M | 2.83% | +709,674 | New |
| Marshall Wace, LLP | 739,780 | $23.3M | 0.02% | +25,201+3.5% | Added |
| Bank of New York Mellon Corp | 743,292 | $23.4M | 0.00% | −7,294−1.0% | Reduced |
| Vanguard Fiduciary Trust Co | 765,886 | $24.1M | 0.01% | +765,886 | New |
| Bank of America Corp | 855,453 | $27.0M | 0.00% | +278,798+48.3% | Added |
| Kennedy Capital Management, Inc. | 910,039 | $28.7M | 0.61% | +865,179+1,928.6% | Added |
| Nuveen, LLC | 947,502 | $29.9M | 0.01% | +705,575+291.6% | Added |
| Raymond James Financial Inc | 995,753 | $31.4M | 0.01% | +87,312+9.6% | Added |