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The company

Allegro MicroSystems, Inc.

ALGM · Nasdaq

TechnologySemiconductorsNot moving yetAIAIRobotics

ALGM stood above a rising 150-day average in 31 of the last 52 weekly readings, and has been out of that trend for the last 9 weeks. It is 25.7% below that average now. Semiconductors: 25% of its 68 stocks in an uptrend (−15 points in four weeks); Technology: 29% (−3 points in four weeks).

SEC filings

Statistics

Rotation: Not moving yet
Weeks in an uptrend: out for 9
Industry in uptrend: 25% -15 in 4 wk
Insider buys, 12 months: $0
Insider sales, 12 months: $9.6M
Officials’ trades on record: 11
Institutions holding: 347 (+56)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 31 of 52 weeks.

17 Apr – 16 Oct

Semiconductors: A minority of its stocks are in an uptrend and the share has fallen sharply over four weeks. Technology: A minority of its stocks are in an uptrend and the share has been slipping.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

11 disclosed lines: House 10, Senate 1, executive 0; 4 people.

Who	Did	Amount	Traded
Gilbert Ray Cisneros, Jr. House: U.S. House ClerkCA31	bought	$1k–$15k	29 Sep 2026filed 12 Oct 2026
Josh Gottheimer House: U.S. House ClerkNJ05	boughtjoint	$1k–$15k	17 Oct 2024filed 6 Nov 2024
Josh Gottheimer House: U.S. House ClerkNJ05	soldjoint	$1k–$15k	16 Sep 2024filed 3 Oct 2024
Josh Gottheimer House: U.S. House ClerkNJ05	boughtjoint	$1k–$15k	11 Jan 2024filed 15 Feb 2024
Josh Gottheimer House: U.S. House ClerkNJ05	soldjoint	$1k–$15k	11 Dec 2023filed 7 Jan 2024
Josh Gottheimer House: U.S. House ClerkNJ05	boughtjoint	$1k–$15k	27 Oct 2023filed 11 Nov 2023
Thomas R. Carper Senate: U.S. Senate eFDSenator	soldspouse	$1k–$15k	17 Apr 2023filed 1 May 2023
Josh Gottheimer House: U.S. House ClerkNJ05	boughtjoint	$1k–$15k	23 Jan 2023filed 17 Feb 2023
Susie Lee House: U.S. House ClerkNV03	sold	$1k–$15k	26 May 2021filed 14 Jun 2021
Susie Lee House: U.S. House ClerkNV03	bought	$1k–$15k	12 Feb 2021filed 11 Mar 2021
Susie Lee House: U.S. House ClerkNV03	bought	$1k–$15k	5 Feb 2021filed 11 Mar 2021

Insiders

Buy orders, 12 months0

Sale orders, 12 months13

Buyers · sellers0 · 9

Who	Did	Shares	Traded
Jennie RaubacherDirector	sold	1,000at $45.32	17 Aug 2026filed 18 Aug 2026
Erin HagenSVP, CHRO	sold	2,285at $44.39	10 Aug 2026filed 12 Aug 2026
Richard MadormoSVP, Worldwide Sales	sold	5,000at $52.72	3 Jun 2026filed 4 Jun 2026
Troy ColemanSVP, General Manager, Products	sold	4,500at $45.72	22 May 2026filed 26 May 2026
Roald Graham WebsterVP, Chief Accounting Officer	sold	5,217at $44.89	21 May 2026filed 22 May 2026
Ian KentSVP, Global Operations	sold	2,642at $41.56	18 May 2026filed 19 May 2026
Susan D. LynchDirector	sold	16,711at $45.46	14 May 2026filed 15 May 2026
Michael DooguePresident and CEO	sold	30,089at $47.23	11 May 2026filed 13 May 2026
Sharon BrianskySVP, GC and Secretary	sold	8,948at $47.54	11 May 2026filed 13 May 2026
Erin HagenSVP, CHRO	sold	2,598at $35.00	2 Mar 2026filed 3 Mar 2026
Sharon BrianskySVP, GC and Secretary	sold	9,727at $35.00	2 Mar 2026filed 3 Mar 2026
Sharon BrianskySVP, GC and Secretary	sold	9,258at $41.56	17 Feb 2026filed 18 Feb 2026

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders347+56 on the quarter

New · exited103 · 48

Reported value$9.9B

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
FMR LLCreduced · filed 13 Aug 2026	25,581,021$1.8B	-1,840,185−6.7%
BlackRock, Inc.added · filed 7 Aug 2026	13,889,324$967.0M	+1,394,456+11.2%
Invesco Ltd.added · filed 14 Aug 2026	13,678,393$952.3M	+4,926,912+56.3%
JPMORGAN CHASE & COnew · filed 12 Aug 2026	12,723,790$844.9M	+12,723,790
Capital Research Global Investorsreduced · filed 12 Aug 2026	12,006,396$835.9M	-429,162−3.5%
VANGUARD PORTFOLIO MANAGEMENT LLCreduced · filed 13 Aug 2026	7,668,472$533.9M	-251,570−3.2%
STATE STREET CORPadded · filed 7 Aug 2026	5,676,421$395.2M	+448,317+8.6%
VANGUARD CAPITAL MANAGEMENT LLCadded · filed 13 Aug 2026	5,508,806$383.5M	+44,088+0.8%
Clearbridge Investments, LLCadded · filed 13 Aug 2026	2,946,239$205.1M	+82,529+2.9%
GEODE CAPITAL MANAGEMENT, LLCadded · filed 12 Aug 2026	2,644,929$184.2M	+188,109+7.7%