Allegro MicroSystems, Inc.
MX ˙ BMV ˙ US01749D1054
SecurityMX:ALGM / Allegro MicroSystems, Inc.
InstitutionState of Wyoming
Latest Disclosed Ownership13,834 shares
Latest Disclosed Value $ 436,186
State of Wyoming reports 29.67% increase in ownership of ALGM / Allegro MicroSystems, Inc.

On May 13, 2026 - State of Wyoming filed a 13F-HR form disclosing ownership of 13,834 shares of Allegro MicroSystems, Inc. (MX:ALGM) valued at $436,186 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 10,669 shares of Allegro MicroSystems, Inc.. This represents a change in shares of 29.67% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 13,834 3,165 29.67 436 55.16 0.0517
2026-02-10 2025-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 10,669 -5,340 -33.36 281 -39.83 0.0308
2025-11-04 2025-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 16,009 12,943 422.15 467 349.04 0.0533
2025-08-19 2025-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 3,066 110 3.72 105 40.54 0.0128
2025-05-14 2025-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 2,956 283 10.59 74 27.59 0.0098
2025-02-14 2024-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 2,673 -89 -3.22 58 -9.37 0.0075
2024-11-14 2024-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 2,762 240 9.52 64 -9.86 0.0092
2024-08-14 2024-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 2,522 278 12.39 71 18.33 0.0117
2024-05-14 2024-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 2,244 1,206 116.18 60 93.55 0.0101
2024-02-15 2023-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 1,038 130 14.32 31 6.90 0.0059
2023-11-14 2023-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 908 298 48.85 29 7.41 0.0062
2023-08-14 2023-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 610 610 28 0.0080
2023-05-12 2023-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 0 -2,393 -100.00 0 -100.00
2023-02-15 2022-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 2,393 -1,955 -44.96 72 -25.26 0.0239
2022-11-14 2022-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 4,348 4,348 95 0.0469
2022-05-13 2022-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 0 -1,015 -100.00 0 -100.00
2022-02-11 2021-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 1,015 1,015 37 0.0172
2022-02-11 2021-06-30 13F/A-1 ALLEGRO MICROSYSTEMS COM 01749D105 0 0
2022-02-11 2021-06-30 13F/A-2 ALLEGRO MICROSYSTEMS COM 01749D105 0 -303 -100.00 0 -100.00
2022-02-11 2021-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 0 -303 0
2022-02-14 2021-03-31 13F/A-1 ALLEGRO MICROSYSTEMS COM 01749D105 303 303 8 0.0131
2022-02-08 2021-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 303 303 8 0.0131
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.