ALLEGRO MICROSYSTEMS, INC. ALGM
CIK 0000866291 · CUSIP 01749D105
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | FMR LLC CIK 315066 · View history | $676.53M 26,921,116 shares | 0.04% | +4.15M(+18.20%)Added | SEC filing ↗ May 12, 2025 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $354.33M 14,100,017 shares | 0.01% | +17.07K(+0.10%)Added | SEC filing ↗ May 9, 2025 | ▾ |
| 03 | BlackRock, Inc. CIK 2012383 · View history | $293.31M 11,671,558 shares | 0.01% | -86.05K(-0.70%)Reduced | SEC filing ↗ May 2, 2025 | ▾ |
| 04 | Capital Research Global Investors CIK 1422848 · View history | $278.01M 11,062,801 shares | 0.06% | +5.29M(+91.80%)Added | SEC filing ↗ May 12, 2025 | ▾ |
| 05 | JPMORGAN CHASE & CO CIK 19617 · View history | $226.06M 8,995,806 shares | 0.02% | -1.54M(-14.60%)Reduced | SEC filing ↗ May 12, 2025 | ▾ |
| 06 | STATE STREET CORP CIK 93751 · View history | $127.78M 5,084,599 shares | 0.01% | -792.88K(-13.50%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 07 | Invesco Ltd. CIK 914208 · View history | $121.52M 4,835,641 shares | 0.02% | +2.75M(+131.50%)Added | SEC filing ↗ May 12, 2025 | ▾ |
| 08 | CITADEL ADVISORS LLC CIK 1423053 · View history | $108.90M 4,333,613 shares | 0.11% | +2.76M(+175.10%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 09 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history | $81.64M 3,248,890 shares | 0.02% | -744.79K(-18.60%)Reduced | SEC filing ↗ May 13, 2025 | ▾ |
| 10 | Clearbridge Investments, LLC CIK 1348883 · View history | $79.45M 3,161,587 shares | 0.07% | -223.41K(-6.60%)Reduced | SEC filing ↗ May 13, 2025 | ▾ |
| 11 | FRONTIER CAPITAL MANAGEMENT CO LLC CIK 351173 · View history | $73.12M 2,909,737 shares | 0.80% | +2.82M(+3,090.70%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 12 | MORGAN STANLEY CIK 895421 · View history | $66.55M 2,648,371 shares | 0.00% | -8.43K(-0.30%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 13 | MACQUARIE GROUP LTD CIK 1418333 · Amended · View history | $66.24M 2,636,014 shares | 0.08% | +1.16M(+78.30%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 14 | PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history | $60.72M 2,416,102 shares | 0.03% | +144.82K(+6.40%)Added | SEC filing ↗ Apr 28, 2025 | ▾ |
| 15 | MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history | $60.39M 2,402,978 shares | 0.06% | +1.08M(+81.40%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 16 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $60.03M 2,388,084 shares | 0.00% | +23.50K(+1.00%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 17 | Balyasny Asset Management L.P. CIK 1218710 · View history | $58.46M 2,326,464 shares | 0.15% | +1.76M(+310.20%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 18 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC CIK 1638555 · View history | $57.09M 2,271,600 shares | 2.74% | +1.38M(+154.10%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 19 | ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history | $52.98M 2,108,423 shares | 0.10% | -625.14K(-22.90%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 20 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $49.46M 1,968,079 shares | 0.01% | +248.81K(+14.50%)Added | SEC filing ↗ May 13, 2025 | ▾ |
Showing 20 / 293 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
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