Allegro MicroSystems, Inc.
MX ˙ BMV ˙ US01749D1054
SecurityMX:ALGM / Allegro MicroSystems, Inc.
InstitutionGlobal X Japan Co., Ltd.
Latest Disclosed Ownership492 shares
Latest Disclosed Value $ 15,513
Global X Japan Co., Ltd. reports 56.19% increase in ownership of ALGM / Allegro MicroSystems, Inc.

On April 13, 2026 - Global X Japan Co., Ltd. filed a 13F-HR form disclosing ownership of 492 shares of Allegro MicroSystems, Inc. (MX:ALGM) valued at $15,513 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 315 shares of Allegro MicroSystems, Inc.. This represents a change in shares of 56.19% 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)
2026-04-13 2026-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 492 177 56.19 16 87.50 0.0008
2026-01-13 2025-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 315 0 0.00 8 -11.11 0.0006
2025-10-15 2025-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 315 -172 -35.32 9 -43.75 0.0008
2025-07-11 2025-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 487 0 0.00 17 33.33 0.0017
2025-04-21 2025-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 487 118 31.98 12 50.00 0.0014
2025-01-28 2024-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 369 -133 -26.49 8 -27.27 0.0010
2024-10-22 2024-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 502 -21,855 -97.75 12 -98.26 0.0015
2024-08-07 2024-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 22,357 7,641 51.92 631 59.34 0.0895
2024-07-01 2024-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 14,716 9,783 198.32 397 165.77 0.0844
2024-07-01 2023-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 4,933 4,933 149 0.0848
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.