Filing Flows › Allegro Microsystems (ALGM) › Who owns the stock
Who owns Allegro Microsystems (ALGM) stock
351 funds reported Allegro Microsystems (ALGM) shares in their latest 13F filings, worth $9.6B in all. The largest holder is FMR LLC ($1.8B). Last quarter 187 funds added to their stakes and 135 cut them. Members of Congress and other officials disclosed 1 trade (1 buys, 0 sales).
Largest holders (13F)
| Fund | Shares | Value | Change | Quarter |
|---|---|---|---|---|
| FMR LLC | 25,581,021 | $1.8B | decrease | 2026-06-30 |
| BlackRock | 13,889,324 | $967M | increase | 2026-06-30 |
| Invesco | 13,678,393 | $952M | increase | 2026-06-30 |
| Capital Research Global Investors | 12,006,396 | $836M | decrease | 2026-06-30 |
| Vanguard Portfolio Management LLC | 7,668,472 | $534M | decrease | 2026-06-30 |
| State Street | 5,676,421 | $395M | increase | 2026-06-30 |
| Vanguard Capital Management LLC | 5,508,806 | $384M | increase | 2026-06-30 |
| Vanguard Group | 14,202,528 | $375M | decrease | 2025-12-31 |
| Price T Rowe Associates | 3,710,288 | $258M | increase | 2026-06-30 |
| Clearbridge Investments, LLC | 2,946,239 | $205M | increase | 2026-06-30 |
| Geode Capital Management, LLC | 2,644,929 | $184M | increase | 2026-06-30 |
| Dimensional Fund Advisors LP | 2,123,963 | $148M | decrease | 2026-06-30 |
| Morgan Stanley | 1,809,335 | $126M | decrease | 2026-06-30 |
| Loomis Sayles & Co L P | 1,619,931 | $113M | decrease | 2026-06-30 |
| Goldman Sachs Group | 1,575,057 | $110M | increase | 2026-06-30 |
Trades by Congress and other officials
| Date | Who | Trade | Amount |
|---|---|---|---|
| 2026-09-29 | Gilbert Cisneros | purchase | $1K–$15K |
Allegro Microsystems' latest quarter
Allegro Microsystems, Q2 FY27: revenue $277M (+29% year over year), operating margin 12.8%, net earnings $23.3M, operating cash flow $36.8M. The chart follows the revenue to costs, profit and cash.
Questions
Who owns the most ALGM stock?
By the latest 13F filings: FMR LLC ($1.8B); BlackRock ($967M); Invesco ($952M); Capital Research Global Investors ($836M); Vanguard Portfolio Management LLC ($534M).
Has Congress traded ALGM stock?
Officials disclosed 1 trade on file: 1 buys and 0 sales. The latest: Gilbert Cisneros, purchase on 2026-09-29.
What is the short interest in ALGM?
10,404,154 shares were sold short at the 2026-10-15 settlement, -8.62% of the float.
Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.