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Allegro Microsystems, Inc.

ALGM
Exchange
Nasdaq
Industry
Semiconductors & Related Devices
SEC CIK
0000866291

In the last 90 days, Allegro Microsystems, Inc. insiders filed 0 open-market purchases and 2 sales; 375 institutions reported holding it in 13F filings for Q2 2026, worth $10.2B in total; Maverick Capital is the only superinvestor holding it.

13F holders, Q2 2026

Institutional positions in Allegro Microsystems, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
375
+58 vs. Q1 2026
Shares held
148.2M
+9.97M (+7.2%) vs. Q1 2026
Total value
$10.2B
+$5.91B (+136.7%) vs. Q1 2026
New holders
101
117 more added
Sold out
43
107 more reduced

5 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ALGM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2026: 375 institutions
Q1 2021: 123 institutionsQ2 2021: 129 institutionsQ3 2021: 153 institutionsQ4 2021: 165 institutionsQ1 2022: 173 institutionsQ2 2022: 172 institutionsQ3 2022: 170 institutionsQ4 2022: 219 institutionsQ1 2023: 314 institutionsQ2 2023: 353 institutionsQ3 2023: 312 institutionsQ4 2023: 288 institutionsQ1 2024: 277 institutionsQ2 2024: 268 institutionsQ3 2024: 248 institutionsQ4 2024: 256 institutionsQ1 2025: 292 institutionsQ2 2025: 274 institutionsQ3 2025: 296 institutionsQ4 2025: 294 institutionsQ1 2026: 322 institutionsQ2 2026: 375 institutions
Value heldQ2 2026: $10.2B
Q1 2021: $1.98BQ2 2021: $2.22BQ3 2021: $2.71BQ4 2021: $3.18BQ1 2022: $2.54BQ2 2022: $1.83BQ3 2022: $1.97BQ4 2022: $2.89BQ1 2023: $4.67BQ2 2023: $4.41BQ3 2023: $2.99BQ4 2023: $2.91BQ1 2024: $2.80BQ2 2024: $3.03BQ3 2024: $3.32BQ4 2024: $3.11BQ1 2025: $3.96BQ2 2025: $4.99BQ3 2025: $3.97BQ4 2025: $3.60BQ1 2026: $4.32BQ2 2026: $10.2B
Institutions holding ALGM and their total value by quarter
QuarterHoldersValue
Q2 2026375$10.2B
Q1 2026322$4.32B
Q4 2025294$3.60B
Q3 2025296$3.97B
Q2 2025274$4.99B
Q1 2025292$3.96B
Q4 2024256$3.11B
Q3 2024248$3.32B
Q2 2024268$3.03B
Q1 2024277$2.80B
Q4 2023288$2.91B
Q3 2023312$2.99B
Q2 2023353$4.41B
Q1 2023314$4.67B
Q4 2022219$2.89B
Q3 2022170$1.97B
Q2 2022172$1.83B
Q1 2022173$2.54B
Q4 2021165$3.18B
Q3 2021153$2.71B
Q2 2021129$2.22B
Q1 2021123$1.98B

Institutions, Q2 2026

Shares, value and share of portfolio for each institution holding Allegro Microsystems, Inc.; share changes are against Q1 2026.

Institutions holding ALGM in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Parkside Financial Bank & Trust547$38.1K0.00%00.0%Unchanged
Continuum Advisory, LLC500$34.8K0.00%+500New
EverSource Wealth Advisors, LLC483$33.6K0.00%−69−12.5%Reduced
Rakuten Securities, Inc.439$30.6K0.01%−1,363−75.6%Reduced
Harbour Investments, Inc.407$28.3K0.00%+101+33.0%Added
Transamerica Financial Advisors, Inc.386$26.9K0.00%+360+1,384.6%Added
Activest Wealth Management385$26.8K0.01%00.0%Unchanged
Huntington National Bank334$23.3K0.00%+103+44.6%Added
V-Square Quantitative Management LLC305$21.2K0.00%+305New
Covestor Ltd296$21.0K0.01%−23−7.2%Reduced
Miller Capital Partners, Inc.265$18.4K0.01%+265New
Quarry LP254$17.7K0.00%+254New
Atlantic Union Bankshares Corp241$16.8K0.00%+236+4,720.0%Added
Spire Wealth Management233$16.2K0.00%00.0%Unchanged
Smartleaf Asset Management LLC220$14.6K0.00%00.0%Unchanged
Owl Creek Wealth Partners LLC205$14.3K0.00%+60+41.4%Added
Massmutual Trust Co FSB196$13.6K0.00%00.0%Unchanged
Basecamp Wealth Advisors LLC189$13.2K0.00%+175+1,250.0%Added
SJS Investment Consulting Inc.177$12.3K0.00%+40+29.2%Added
Bogart Wealth, LLC163$11.3K0.00%+140+608.7%Added
Truvestments Capital LLC154$10.7K0.00%00.0%Unchanged
Highland Investment Advisors LLC150$10.4K0.00%+150New
Stone House Investment Management, LLC125$8.70K0.00%+125New
Hilton Head Capital Partners, LLC125$8.70K0.00%00.0%Unchanged
Essential Partners LLC123$8.56K0.00%00.0%Unchanged
LRI Investments, LLC109$7.59K0.00%00.0%Unchanged
Farmers & Merchants Investments Inc105$7.31K0.00%+20+23.5%Added
Bell Investment Advisors, Inc101$7.03K0.00%00.0%Unchanged
Investors Research Corp93$6.47K0.00%00.0%Unchanged
Private Trust Co NA92$6.41K0.00%+92New
Versant Capital Management, Inc89$6.20K0.00%−51−36.4%Reduced
Rossby Financial, LCC89$6.20K0.00%+51+134.2%Added
Mascoma Wealth Management LLC88$6.13K0.00%+88New
Pinnacle Wealth Planning Services, Inc.62$4.32K0.00%00.0%Unchanged
SHP Wealth Management59$4.11K0.00%+23+63.9%Added
Zions Bancorporation, National Association55$3.83K0.00%00.0%Unchanged
Atlas Capital Advisors LLC54$3.76K0.00%00.0%Unchanged
Whittier Trust Co of Nevada Inc72$3.71K0.00%−3−4.0%Reduced
Keating Financial Advisory Services, Inc.52$3.62K0.00%00.0%Unchanged
MCF Advisors LLC50$3.48K0.00%00.0%Unchanged
Ronald Blue Trust, Inc.46$3.20K0.00%00.0%Unchanged
Clearstead Advisors, LLC44$3.06K0.00%+11+33.3%Added
Toth Financial Advisory Corp40$2.79K0.00%00.0%Unchanged
Kilter Group LLC40$2.79K0.00%00.0%Unchanged
Rialto Wealth Management, LLC40$2.79K0.00%+40New
Golden State Wealth Management, LLC36$2.51K0.00%00.0%Unchanged
North Star Investment Management Corp.33$2.30K0.00%00.0%Unchanged
Copia Wealth Management27$1.88K0.00%00.0%Unchanged
Montag A & Associates Inc22$1.53K0.00%+22New
Northwestern Mutual Wealth Management Co21$1.46K0.00%+21New
Principia Wealth Advisory, LLC20$1.39K0.00%+3+17.6%Added
Cromwell Holdings LLC19$1.32K0.00%00.0%Unchanged
Sachetta, LLC18$1.25K0.00%+18New
Avion Wealth24$1.00K0.00%+7+41.2%Added
Raffa Wealth Management, LLC14$9750.00%+14New
MV Capital Management, Inc.13$9060.00%−1−7.1%Reduced
South State Corp.11$7660.00%+11New
Cornerstone Planning Group LLC15$7480.00%00.0%Unchanged
UMA Financial Services, Inc.10$6970.00%+10New
Kayne Anderson Rudnick Investment Management LLC9$6270.00%00.0%Unchanged
Creative Financial Designs Inc5$3480.00%00.0%Unchanged
West Paces Advisors Inc.5$3480.00%+5New
Manning & Napier Advisors LLC5$3320.00%+5New
Abound Wealth Management4$2790.00%+4New
Buck Wealth Strategies, LLC4$2780.00%+4New
IMA Wealth, Inc.3$2090.00%−5−62.5%Reduced
Manchester Capital Management LLC3$2090.00%+3New
Planning Strategies Inc.3$2090.00%+3New
Dunhill Financial, LLC2$1880.00%00.0%Unchanged
Quaker Wealth Management, LLC2$1400.00%00.0%Unchanged
Wealth Enhancement Trust Services, Inc.2$1390.00%00.0%Unchanged
ROSS\JOHNSON & Associates LLC2$1390.00%+2New
Medallion Wealth Advisors, LLC2$1390.00%+2New
TFC Financial Management1$700.00%00.0%Unchanged
Hughes Financial Services, LLC1$700.00%+1New
Citadel Advisors LLC0$00.00%−399,444−100.0%Sold out
G2 Investment Partners Management LLC0$00.00%−208,569−100.0%Sold out
Kettle Hill Capital Management, LLC0$00.00%−181,531−100.0%Sold out
Roubaix Capital, LLC0$00.00%−169,993−100.0%Sold out
Trexquant Investment LP0$00.00%−133,800−100.0%Sold out
Renaissance Technologies LLC0$00.00%−123,900−100.0%Sold out
Brevan Howard Capital Management LP0$00.00%−95,099−100.0%Sold out
Summit Partners Public Asset Management, LLC0$00.00%−54,000−100.0%Sold out
Boothbay Fund Management, LLC0$00.00%−51,418−100.0%Sold out
Y-Intercept (Hong Kong) Ltd0$00.00%−45,132−100.0%Sold out
Tudor Investment Corp Et Al0$00.00%−37,128−100.0%Sold out
Lecap Asset Management Ltd0$00.00%−28,521−100.0%Sold out
Altfest L J & Co Inc0$00.00%−28,167−100.0%Sold out
Millennium Management LLC0$00.00%−28,127−100.0%Sold out
Fox Run Management, L.L.C.0$00.00%−27,987−100.0%Sold out
Moody National Bank Trust Division0$00.00%−22,355−100.0%Sold out
CenterBook Partners LP0$00.00%−21,847−100.0%Sold out
Mirabella Financial Services LLP0$00.00%−17,082−100.0%Sold out
Bridgewater Associates, LP0$00.00%−16,645−100.0%Sold out
PEAK6 LLC0$00.00%−15,503−100.0%Sold out
Catalyst Funds Management Pty Ltd0$00.00%−13,500−100.0%Sold out
Alpine Global Management, LLC0$00.00%−12,630−100.0%Sold out
Virtu Financial LLC0$00.00%−11,703−100.0%Sold out
Schonfeld Strategic Advisors LLC0$00.00%−11,699−100.0%Sold out
MML Investors Services, LLC0$00.00%−10,975−100.0%Sold out