CapitolRadar tracks every publicly disclosed ALGM trade by US congress members and corporate insiders: 10 disclosed trades (7 buys, 3 sells) by 3 tracked traders, from 2021-02-05 to 2026-09-29. Updated daily from official filings.
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Allegro MicroSystems, Inc. (ALGM) — Technology · Semiconductors, market cap about $6.3B.
CapitolRadar analysis
10 tracked ALGM trades, led by 7 buys
Allegro MicroSystems, Inc. (ALGM), in the Technology sector and Semiconductors industry, has 10 tracked trades from three distinct traders between February 5, 2021 and September 29, 2026. The activity consists of seven buys and three sells, so purchases account for most of the disclosed transactions. The sample is small, however, and the limited number of traders makes broad conclusions unreliable.
4 buys from Josh Gottheimer account for the largest share
Josh Gottheimer recorded four ALGM buys, the most among the listed buyers, with his latest dated October 17, 2024. Susie Lee recorded two buys, most recently on February 12, 2021. Gilbert Cisneros recorded one buy, dated September 29, 2026. Together, these three buyers account for all seven tracked purchases.
Quarterly activity was sporadic. There were two trades in 2021 Q1, both buys, followed by one sell in 2021 Q2. The record shows one buy in 2023 Q1; two trades in 2023 Q4, including one buy; one buy in 2024 Q1; one sell in 2024 Q3; one buy in 2024 Q4; and one buy in 2026 Q3.
2 buyers also appeared in AMD, CRWD, MSFT and SAIL
Two of the ALGM buyers also bought each of AMD, CRWD, MSFT and SAIL. One also bought AMAT, and one also bought COMP. These overlaps describe disclosed trading patterns only and do not establish a shared rationale or outlook.
Disclosure data has important limits: reports may arrive up to 45 days after a transaction, so the record is not necessarily real time. Disclosed transaction amounts are reported as ranges and any derived dollar values are estimates; no transaction-size ranges are included in this summary. With only 10 trades and three traders, both the ALGM history and the cross-stock overlap remain small samples.
Analysis written from the tracked record on 2026-10-14; it is refreshed whenever the underlying numbers change.
Activity by quarter
| Quarter | Disclosed trades | Buys | Sells |
|---|---|---|---|
| 2026 Q3 | 1 | 1 | 0 |
| 2024 Q4 | 1 | 1 | 0 |
| 2024 Q3 | 1 | 0 | 1 |
| 2024 Q1 | 1 | 1 | 0 |
| 2023 Q4 | 2 | 1 | 1 |
| 2023 Q1 | 1 | 1 | 0 |
| 2021 Q2 | 1 | 0 | 1 |
| 2021 Q1 | 2 | 2 | 0 |
Who is buying ALGM?
| Trader | Disclosed buys | Last buy | Grade |
|---|---|---|---|
| Josh Gottheimer | 4 | 2024-10-17 | — |
| Susie Lee | 2 | 2021-02-12 | — |
| Gilbert Cisneros | 1 | 2026-09-29 | — |
Disclosed trades in ALGM
| Date | Who | Type | Amount | 30d vs SPY |
|---|---|---|---|---|
| 2026-09-29 | Gilbert Cisneros | buy | $1,001 - $15,000 | — |
| 2024-10-17 | Josh Gottheimer | buy | $1,001 - $15,000 | — |
| 2024-09-16 | Josh Gottheimer | sell | $1,001 - $15,000 | — |
| 2024-01-11 | Josh Gottheimer | buy | $1,001 - $15,000 | — |
| 2023-12-11 | Josh Gottheimer | sell | $1,001 - $15,000 | — |
| 2023-10-27 | Josh Gottheimer | buy | $1,001 - $15,000 | — |
| 2023-01-23 | Josh Gottheimer | buy | $1,001 - $15,000 | — |
| 2021-05-26 | Susie Lee | sell | $1,001 - $15,000 | — |
| 2021-02-12 | Susie Lee | buy | $1,001 - $15,000 | — |
| 2021-02-05 | Susie Lee | buy | $1,001 - $15,000 | — |
CapitolRadar signal history
NEW PICK 2026-10-13
Rep. Gilbert Cisneros disclosed buying $1,001–$15,000 of ALGM stock. The panel passed mainly because he has no verified trading record against SPY, making this an unproven signal, with no other tracked buyers adding support. A verified history showing that his prior disclosed purchases consistently outperformed SPY could have changed the verdict.
These buyers also bought
Other stocks the tracked buyers of ALGM disclosed buying in the last six months: AMD (2) · CRWD (2) · MSFT (2) · SAIL (2) · APH (1) · CSWI (1).
About Allegro MicroSystems, Inc.
Allegro MicroSystems, Inc. focuses on the creation, production, and worldwide distribution of sophisticated integrated circuits (ICs). Their primary offerings consist of sensor ICs and custom-designed analog power ICs, developed mainly for motion control and energy-saving applications. The company's product line includes magnetic sensor ICs, which are crucial for measuring position, speed, and current. They also supply various power management ICs, such as motor drivers, voltage regulators, and LED drivers. Furthermore, Allegro provides photonic and 3D sensing components, encompassing photodio…
Frequently asked questions
Which politicians bought ALGM most?
Josh Gottheimer leads with 4 disclosed buys, followed by Susie Lee.
How current is this page?
It re-renders from the tracked record on every view and new filings are ingested daily — but STOCK Act disclosures can lag the trade by up to 45 days, so the most recent weeks are always incomplete.
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CapitolRadar tracks publicly disclosed trades (STOCK Act filings and SEC Form 4). Disclosures can lag the trade by up to 45 days. Backtests measure past disclosed buys against the S&P 500 and do not predict future results. Everything on this page is impersonal information for your own research — not investment advice.