ALLEGRO MICROSYSTEMS, INC. - Common Stock (ALGM)

Historical Holders from Q4 2020 to Q3 2025

Symbol: ALGM on Nasdaq
Type / Class: Equity / Common Stock
Shares outstanding: 184,934,384
All holders as of 30 Sep 2025: Q3 2025
Total 13F shares, excl. options: 135,894,360
Holdings value: $3,967,828,999
% of all portfolios: 0.001%
Number of holders: 287
Number of buys: 139
Number of sells: -149
Average buys %: +0%
Average sells %: -0%

Reported Shares, Excluding Options vs Price

Reported Value, Excluding Options

Total Investors

Significant Owners of ALLEGRO MICROSYSTEMS, INC. - Common Stock (ALGM)

Filer	Ownership	Change %	Holdings Value	Net Change	Nb Shares	Change %	Reporting Name	Report Period
FMR LLC	14.6%	+18.3%	$517,693,066	+$79,739,599	26,921,116	+18.2%	FMR LLC	31 Mar 2025
Capital Research Global Investors	8.6%	+43.3%	$584,644,163	+$177,975,599	15,904,357	+43.8%	Capital Research Global Investors	30 Jun 2025
JPMORGAN CHASE & CO	4.8%		$172,976,792		8,995,153		JPMORGAN CHASE & CO.	31 Mar 2025

Institutional Holders of ALLEGRO MICROSYSTEMS, INC. - Common Stock (ALGM)

Period	Reported Shares, Excl. Options	Value, Excl. Options	Change	Puts Notional Value	Calls Notional Value	Price	Investors
2025 Q3	135,894,360	$3,967,828,999	-$319,341,547	$94,449,720	$12,248,532	$29.2	287
2025 Q2	146,056,579	$4,992,929,892	-$219,199,122	$233,945,363	$29,180,986	$34.19	270
2025 Q1	156,311,335	$3,927,728,563	+$388,307,479	$75,984,721	$36,249,811	$25.13	288
2024 Q4	142,070,976	$3,106,108,365	-$93,131,573	$15,272,016	$28,106,300	$21.86	252
2024 Q3	142,653,950	$3,322,662,692	+$662,040,174	$55,401,921	$22,150,225	$23.3	243
2024 Q2	107,229,247	$3,029,954,806	+$94,075,184	$15,147,936	$34,257,944	$28.24	266
2024 Q1	103,930,579	$2,801,496,390	+$196,028,499	$89,957,432	$55,284,176	$26.96	272
2023 Q4	96,322,663	$2,913,583,833	+$74,962,541	$75,290,571	$62,891,979	$30.27	286
2023 Q3	80,834,492	$2,581,507,429	-$9,857,061	$62,276,612	$33,390,076	$31.94	305
2023 Q2	97,600,191	$4,405,747,760	+$855,781	$47,699,438	$62,297,714	$45.14	347
2023 Q1	97,246,444	$4,665,848,181	+$97,194,449	$19,519,975	$72,670,602	$47.99	306
2022 Q4	96,526,699	$2,897,890,986	+$193,662,088	$14,676,426	$10,791,972	$30.02	217
2022 Q3	90,508,830	$1,977,725,120	+$37,072,148	$7,425,000	$3,170,000	$21.85	168
2022 Q2	88,493,474	$1,831,183,026	-$24,643,454	$16,823,000	$1,891,000	$20.69	161
2022 Q1	89,244,064	$2,536,743,300	+$71,940,131	$30,755,000	$764,000	$28.4	168
2021 Q4	87,969,961	$3,182,089,446	-$39,880,903	$289,000	$3,741,000	$36.18	162
2021 Q3	84,674,887	$2,706,520,358	+$151,110,004		$1,696,000	$31.96	149
2021 Q2	80,009,678	$2,216,241,164	+$115,088,327	$0	$632,000	$27.7	124
2021 Q1	77,963,176	$1,976,368,423	+$421,333,763	$2,172,000	$312,000	$25.35	120
2020 Q4	29,935,709	$798,095,898	+$794,627,864			$26.66	91