Allegro MicroSystems, Inc.
US ˙ NasdaqGS ˙ US01749D1054

SecurityALGM / Allegro MicroSystems, Inc.
InstitutionSilvercrest Asset Management Group Llc
Latest Disclosed Ownership707,891 shares
Latest Disclosed Value $ 22,319,832
Silvercrest Asset Management Group Llc reports 4.76% increase in ownership of ALGM / Allegro MicroSystems, Inc.

On May 15, 2026 - Silvercrest Asset Management Group Llc filed a 13F-HR form disclosing ownership of 707,891 shares of Allegro MicroSystems, Inc. (US:ALGM) valued at $22,319,803 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 675,703 shares of Allegro MicroSystems, Inc.. This represents a change in shares of 4.76% during the quarter. The current value of the position is $37,596,091 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)
2026-05-15 2026-03-31 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 707,891 32,188 4.76 22,320 25.21 0.1613
2026-02-17 2025-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 675,703 -9,358 -1.37 17,825 -10.89 0.1225
2025-11-14 2025-09-30 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 685,061 -5,304 -0.77 20,004 -15.25 0.1324
2025-08-14 2025-06-30 13F ALLEGRO MICROSYSTEMS COM 01749D105 690,365 31,004 4.70 23,604 42.45 0.1586
2025-05-15 2025-03-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 659,361 21,790 3.42 16,570 18.88 0.1186
2025-02-14 2024-12-31 13F ALLEGRO MICROSYSTEMS COM 01749D105 637,571 114,476 21.88 13,937 14.35 0.0931
2024-11-14 2024-09-30 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 523,095 -16,090 -2.98 12,188 -19.95 0.0829
2024-08-15 2024-06-30 13F/A-1 ALLEGRO MICROSYSTEMS INC COM COM 01749D105 539,185 -93,361 -14.76 15,227 -10.71 0.1045
2024-08-14 2024-06-30 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 1,078,370 445,824 30,453 0.1045
2024-05-15 2024-03-31 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 632,546 495,935 363.03 17,053 312.41 0.1154
2024-02-14 2023-12-31 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 136,611 -417 -0.30 4,135 -5.51 0.0292
2023-11-14 2023-09-30 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 137,028 -65,615 -32.38 4,377 -52.16 0.0332
2023-08-14 2023-06-30 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 202,643 -18,126 -8.21 9,147 -13.66 0.0652
2023-05-15 2023-03-31 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 220,769 -347,902 -61.18 10,595 -37.94 0.0804
2023-02-14 2022-12-31 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 568,671 73,788 14.91 17,072 57.87 0.1312
2022-11-14 2022-09-30 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 494,883 118,350 31.43 10,813 38.81 0.0889
2022-08-15 2022-06-30 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 376,533 108,958 40.72 7,790 2.51 0.0592
2022-05-16 2022-03-31 13F ALLEGRO MICROSYSTEMS INC COM COM 01749D105 267,575 267,575 7,599 0.0494
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.