Allegro MicroSystems, Inc.
US ˙ NasdaqGS ˙ US01749D1054

SecurityALGM / Allegro MicroSystems, Inc.
InstitutionSignaturefd, Llc
Latest Disclosed Ownership694 shares
Latest Disclosed Value $ 21,882
Signaturefd, Llc reports 6.28% increase in ownership of ALGM / Allegro MicroSystems, Inc.

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 694 shares of Allegro MicroSystems, Inc. (US:ALGM) valued at $21,882 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 653 shares of Allegro MicroSystems, Inc.. This represents a change in shares of 6.28% during the quarter. The current value of the position is $36,858 USD.

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)
2026-04-07 2026-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 694 41 6.28 22 23.53 0.0003
2026-01-20 2025-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 653 47 7.76 17 0.00 0.0003
2025-10-21 2025-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 606 -22 -3.50 18 -19.05 0.0003
2025-07-16 2025-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 628 271 75.91 21 162.50 0.0004
2025-05-02 2025-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 357 267 296.67 9 700.00 0.0002
2025-02-10 2024-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 90 -824 -90.15 2 -95.24 0.0000
2024-10-21 2024-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 914 10 1.11 21 -16.00 0.0004
2024-07-29 2024-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 904 -107 -10.58 26 -7.41 0.0005
2024-05-03 2024-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 1,011 -286 -22.05 27 -30.77 0.0006
2024-02-01 2023-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 1,297 -721 -35.73 39 -39.06 0.0009
2023-11-03 2023-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 2,018 -21 -1.03 64 -30.43 0.0017
2023-08-01 2023-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 2,039 147 7.77 92 2.22 0.0024
2023-04-28 2023-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 1,892 -10 -0.53 91 57.89 0.0025
2023-01-30 2022-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 1,902 537 39.34 57 90.00 0.0017
2022-11-08 2022-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 1,365 782 134.13 30 150.00 0.0010
2022-08-10 2022-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 583 342 141.91 12 71.43 0.0004
2022-05-02 2022-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 241 -310 -56.26 7 -65.00 0.0002
2022-01-25 2021-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 551 54 10.87 20 25.00 0.0006
2021-10-28 2021-09-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 497 427 610.00 16 700.00 0.0006
2021-07-26 2021-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 70 33 89.19 2 100.00 0.0001
2021-04-30 2021-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 37 37 1 0.0000
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.