Allegro MicrosystemsALGM
13F holders, Q2 2026 (June 30)375holders +53
94new positions
43sold out
3famous investors
$69.00avg. 13F price*
At the end of Q2 2026, 375 institutions reported holding Allegro Microsystems Inc. (ALGM) in their 13F filings, up 53 from Q1 2026. 94 opened new positions and 43 sold out. The largest holders were FMR LLC ($1.8B), BlackRock, Inc. ($967.0M) and Invesco Ltd. ($952.3M). 3 famous investors held it, including Joel Greenblatt (0.1% of Gotham Asset Management's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and Lee Ainslie (0.0% of Maverick Capital's portfolio).
- Company
- Allegro Microsystems Inc.
- CUSIP
- 01749D105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 94 | $137.8M |
| Exits | 43 | $57.7M |
All 13F filers, Q1 2026 → Q2 2026: 21,379,168 shares bought and 12,771,996 shares sold, net +8,607,172 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 375 holders
| FMR LLC | 0.08% | Reduce -6.7% | 25,581,021 | $1.8B |
| BlackRock, Inc. | 0.01% | Add +11.2% | 13,889,324 | $967.0M |
| Invesco Ltd. | 0.08% | Add +56.3% | 13,678,393 | $952.3M |
| JPMorgan Chase & Co. | 0.05% | Add +47.1% | 12,723,790 | $844.9M |
| Capital Research Global Investors | 0.12% | Reduce -3.5% | 12,006,396 | $835.9M |
| Vanguard Portfolio Management LLC | 0.02% | Reduce -3.2% | 7,668,472 | $533.9M |
| State Street Corp. | 0.01% | Add +8.6% | 5,676,421 | $395.2M |
| Vanguard Capital Management LLC | 0.01% | Add +0.8% | 5,508,806 | $383.5M |
| T. Rowe Price Associates Inc. | 0.03% | Add +3160.4% | 3,710,288 | $258.3M |
| Clearbridge Investments, LLC | 0.17% | Add +2.9% | 2,946,239 | $205.1M |
| Geode Capital Management, LLC | 0.01% | Add +7.7% | 2,644,929 | $184.2M |
| Dimensional Fund Advisors LP | 0.03% | Reduce -2.1% | 2,123,963 | $147.8M |
| Morgan Stanley | 0.01% | Reduce -20.5% | 1,809,335 | $126.0M |
| Loomis Sayles & Co. L P | 0.14% | Reduce -3.2% | 1,619,931 | $112.8M |
| Goldman Sachs Group Inc. | 0.01% | Add +9.6% | 1,575,057 | $109.7M |
| Principal Financial Group Inc. | 0.05% | Reduce -16.8% | 1,489,791 | $103.7M |
| Massachusetts Financial Services Co. | 0.03% | Add +1983.1% | 1,443,495 | $100.5M |
| Charles Schwab Investment Management Inc. | 0.01% | Reduce -2.2% | 1,360,525 | $94.7M |
| Norges Bank | 0.01% | — | 1,294,958 | $90.2M |
| Northern Trust Corp. | 0.01% | Add +11.6% | 1,167,135 | $81.3M |
| Nomura Asset Management International Inc. | 0.12% | Reduce -44.3% | 1,159,503 | $80.7M |
| Adage Capital Partners Gp, L.L.C. | 0.11% | Reduce -23.4% | 1,121,950 | $78.1M |
| Voya Investment Management LLC | 0.07% | Reduce -33.7% | 966,871 | $67.3M |
| Raymond James Financial Inc. | 0.02% | Reduce -6.8% | 928,060 | $64.6M |
| Bank of America Corp. | 0.00% | Add +7.8% | 921,728 | $64.2M |
| Wellington Management Group LLP | 0.01% | Add +21.1% | 814,937 | $56.7M |
| Vanguard Fiduciary Trust Co. | 0.01% | Add +4.5% | 800,030 | $55.7M |
| UBS Group AG | 0.01% | Add +79.4% | 780,945 | $54.4M |
| Nuveen, LLC | 0.01% | Reduce -23.7% | 722,645 | $50.3M |
| Bank of New York Mellon Corp | 0.01% | Reduce -3.5% | 716,952 | $49.9M |
| Kennedy Capital Management LLC | 0.85% | Reduce -24.2% | 689,668 | $48.0M |
| First Trust Advisors LP | 0.03% | Add +64.9% | 684,022 | $47.6M |
| GW&K Investment Management, LLC | 0.36% | Add +1.1% | 666,812 | $46.4M |
| Ameriprise Financial Inc. | 0.01% | Add +69.5% | 608,793 | $43.0M |
| Allspring Global Investments Holdings, LLC | 0.06% | Add +101.7% | 620,540 | $39.2M |
| Alliancebernstein L.P. | 0.01% | Reduce -30.3% | 1,201,203 | $37.9M |
| Silvercrest Asset Management Group LLC | 0.24% | Reduce -24.1% | 537,082 | $37.4M |
| Lord, Abbett & Co. LLC | 0.11% | Reduce -0.9% | 525,863 | $36.6M |
| T. Rowe Price Investment Management, Inc. | 0.02% | Reduce -7.8% | 517,648 | $36.0M |
| AQR Capital Management | 0.01% | Add +43.1% | 493,753 | $33.4M |
| Aperture Investors, LLC | 3.28% | Reduce -37.5% | 443,427 | $30.9M |
| Braun Stacey Associates Inc. | 0.72% | New | 366,493 | $25.5M |
| Two Sigma Investments, LP | 0.02% | Reduce -46.2% | 343,994 | $23.9M |
| Rhumbline Advisers | 0.02% | Add +8.1% | 333,507 | $23.2M |
| S Squared Technology, LLC | 7.18% | Reduce -27.3% | 332,451 | $23.1M |
| Segall Bryant & Hamill, LLC | 0.27% | Reduce -68.2% | 332,440 | $23.1M |
| Frontier Capital Management Co. LLC | 0.21% | Add +25.3% | 330,904 | $23.0M |
| CIBC Bancorp USA Inc. | 0.03% | New | 327,536 | $22.8M |
| Gotham Asset Management | 0.05% | Add +4.2% | 325,436 | $22.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -6.3% | 323,297 | $22.5M |
| HRT Financial LP | 0.04% | Add +20.9% | 316,439 | $22.0M |
| Russell Investments Group, Ltd. | 0.02% | Add +183.5% | 272,403 | $19.0M |
| Balyasny Asset Management L.P. | 0.04% | Add +8.7% | 267,283 | $18.6M |
| Swiss National Bank | 0.01% | Reduce -2.1% | 250,900 | $17.5M |
| Federated Hermes, Inc. | 0.02% | Add +2305.4% | 237,367 | $16.5M |
| Pier Capital, LLC | 2.10% | Add +0.5% | 227,777 | $15.9M |
| Granite Investment Partners, LLC | 0.77% | New | 215,679 | $15.0M |
| Lightrock Netherlands B.V. | 2.84% | Reduce -59.4% | 206,490 | $14.4M |
| Peregrine Capital Management LLC | 0.45% | Reduce -22.8% | 200,422 | $14.0M |
| Granahan Investment Management, LLC | 0.46% | Reduce -13.7% | 185,461 | $12.9M |
| Talos Eurisko Asset Management LP | 1.87% | Reduce -63.0% | 182,600 | $12.7M |
| Susquehanna International Group, LLP | 0.01% | Add +54.8% | 178,568 | $12.4M |
| Sei Investments Co. | 0.01% | Reduce -22.5% | 169,643 | $11.8M |
| Retirement Systems of Alabama | 0.04% | Reduce -12.3% | 169,402 | $11.8M |
| Quantinno Capital Management LP | 0.01% | Add +24.1% | 166,217 | $11.6M |
| Legal & General Group Plc | 0.00% | Add +0.0% | 164,734 | $11.5M |
| Citigroup Inc. | 0.00% | Add +39.6% | 148,210 | $10.3M |
| California State Teachers Retirement System | 0.01% | Reduce -3.5% | 144,618 | $10.1M |
| Nippon Life Global Investors Americas, Inc. | 0.40% | New | 143,870 | $10.0M |
| Trillium Asset Management, LLC | 0.31% | Add +12.4% | 143,348 | $10.0M |
| Castleark Management LLC | 0.27% | Reduce -3.7% | 141,900 | $9.9M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.01% | Add +5.1% | 133,903 | $9.3M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.01% | Add +2.6% | 119,149 | $8.3M |
| Royal Bank of Canada | 0.00% | Add +257.6% | 108,497 | $7.6M |
| Lisanti Capital Growth, LLC | 1.65% | New | 107,865 | $7.5M |
| State Board of Administration of Florida Retirement System | 0.01% | Add +3.6% | 96,177 | $6.7M |
| Man Group plc | 0.01% | Reduce -69.0% | 95,101 | $6.6M |
| Wells Fargo & Company | 0.00% | Add +29.2% | 94,917 | $6.6M |
| Edgestream Partners, L.P. | 0.19% | New | 92,188 | $6.4M |
| Manufacturers Life Insurance Company, The | 0.01% | Add +13.0% | 91,616 | $6.4M |
| New York State Common Retirement Fund | 0.01% | Add +92.3% | 89,119 | $6.2M |
| Deutsche Bank AG | 0.00% | Add +268.0% | 88,759 | $6.2M |
| State of Wisconsin Investment Board | 0.01% | Reduce -7.2% | 88,089 | $6.1M |
| Envestnet Asset Management Inc. | 0.00% | Add +91.1% | 85,884 | $6.0M |
| Candriam S.C.A. | 0.03% | Reduce -1.6% | 84,708 | $5.9M |
| ArrowMark Colorado Holdings LLC | 0.24% | Reduce -31.0% | 83,361 | $5.8M |
| Natixis Advisors, LLC | 0.01% | Add +61.8% | 76,653 | $5.3M |
| LPL Financial LLC | 0.00% | Add +98.4% | 71,589 | $5.0M |
| Van Eck Associates Corp. | 0.00% | Add +68.8% | 70,504 | $4.9M |
| Algert Global LLC | 0.05% | Add +868.0% | 65,240 | $4.5M |
| MetLife Investment Management, LLC | 0.02% | Add +5.9% | 64,638 | $4.5M |
| Holocene Advisors, LP | 0.01% | New | 63,010 | $4.4M |
| State of Tennessee, Department of Treasury | 0.01% | Reduce -21.3% | 62,389 | $4.3M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.01% | Add +25.8% | 61,148 | $4.3M |
| Handelsbanken Fonder AB | 0.01% | Add +49.8% | 59,900 | $4.2M |
| Informed Momentum Co LLC | 0.37% | New | 59,485 | $4.1M |
| Guggenheim Capital LLC | 0.03% | Add +10.5% | 59,349 | $4.1M |
| Neuberger Berman Group LLC | 0.00% | Add +2.1% | 59,204 | $4.1M |
| Amalgamated Bank | 0.03% | Add +4.7% | 58,401 | $4.1M |
| Jupiter Topco LLC | 0.00% | — | 57,329 | $4.0M |
"% of holder's portfolio" is ALGM's weight in each manager's 13F, not the share of Allegro Microsystems Inc. the manager owns.