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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.

Q4 2025 vs. Q3 2025

How the institutions holding Allegro Microsystems, Inc. changed between Q3 2025 and Q4 2025.

All holders in Q4 2025All holders in Q3 2025

13F holders of ALGM: Q3 2025 compared with Q4 2025
MeasureQ3 2025Of which not filed for Q4 2025Q4 2025Change
Holders2967294+5
Shares135.9M424.7K136.5M+1.07M (+0.8%)
Value$3.97B$12.4M$3.60B−$352.0M (−8.9%)

7 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (56)

Institutions that held Allegro Microsystems, Inc. at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to ALGM in Q4 2025
InstitutionSharesValue% of portfolio
Nomura Asset Management International Inc.2,036,212$53.7M0.08%
Norges Bank1,457,805$38.5M0.00%
Talos Asset Management LP560,200$14.8M2.62%
Renaissance Technologies LLC436,200$11.5M0.02%
Alyeska Investment Group, L.P.400,000$10.6M0.03%
Lightrock Netherlands B.V.354,390$9.35M1.98%
Citigroup Inc106,301$2.80M0.00%
Granahan Investment Management Inc89,857$2.37M0.10%
Hel Ved Capital Management Ltd62,850$1.66M0.57%
D. E. Shaw & Co., Inc.55,304$1.46M0.00%
Qube Research & Technologies Ltd48,097$1.27M0.00%
Intech Investment Management LLC36,173$954.2K0.01%
Entropy Technologies, LP35,895$946.9K0.05%
Pinnacle Financial Partners, Inc.32,476$856.7K0.01%
MML Investors Services, LLC30,892$814.9K0.00%
Lecap Asset Management Ltd29,696$783.4K0.31%
Bridgefront Capital, LLC28,801$759.8K0.19%
PEAK6 LLC27,542$726.6K0.02%
Tudor Investment Corp Et Al25,665$677.0K0.00%
Toroso Investments, LLC23,135$610.3K0.00%
Campbell & CO Investment Adviser LLC18,255$481.6K0.02%
Integrated Wealth Concepts LLC17,976$474.2K0.01%
TSG Advice Partners, LLC17,167$452.9K0.07%
Altfest L J & Co Inc16,287$429.7K0.05%
Wealth Enhancement Advisory Services, LLC11,081$349.4K0.00%
Holocene Advisors, LP12,962$341.9K0.00%
Mitsubishi UFJ Trust & Banking Corp12,752$336.4K0.00%
Pinpoint Asset Management (Singapore) Pte. Ltd.12,050$317.9K0.07%
Evergreen Capital Management LLC8,048$212.3K0.00%
Aquatic Capital Management LLC7,994$210.9K0.01%
Jupiter Asset Management Ltd7,931$209.2K0.00%
Skandinaviska Enskilda Banken AB (publ)7,798$205.6K0.00%
Walleye Capital LLC3,605$95.1K0.00%
Federation des caisses Desjardins du Quebec2,176$57.4K0.00%
Kestra Advisory Services, LLC1,281$33.8K0.00%
Los Angeles Capital Management LLC616$18.6K0.00%
Activest Wealth Management385$10.2K0.00%
Sunbelt Securities, Inc.185$4.88K0.00%
Flagship Harbor Advisors, LLC178$4.70K0.00%
SJS Investment Consulting Inc.137$3.62K0.00%
Hilton Head Capital Partners, LLC125$3.30K0.00%
MAI Capital Management70$1.85K0.00%
Pinnacle Wealth Planning Services, Inc.57$1.50K0.00%
Zions Bancorporation, National Association41$1.08K0.00%
Keating Financial Advisory Services, Inc.37$9760.00%
Golden State Wealth Management, LLC36$9500.00%
Copia Wealth Management27$7120.00%
Northwestern Mutual Wealth Management Co26$6860.00%
Rossby Financial, LCC23$6070.00%
Optima Capital LLC19$5010.00%
SHP Wealth Management12$3170.00%
Principia Wealth Advisory, LLC9$2370.00%
Transamerica Financial Advisors, Inc.6$1580.00%
Eastern Bank3$790.00%
Dunhill Financial, LLC3$710.00%
Wealth Enhancement Trust Services, Inc.2$530.00%

Sold out (51)

Institutions that held Allegro Microsystems, Inc. at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of ALGM in Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Macquarie Group Ltd2,197,274$64.2M
Castleark Management LLC133,508$3.90M
Susquehanna Portfolio Strategies, LLC115,830$3.38M
Royce & Associates LP102,230$2.99M
Jain Global LLC89,935$2.63M
Schroder Investment Management Group75,401$2.20M
Paloma Partners Management Co75,000$2.19M
Quantbot Technologies LP71,708$2.09M
Caption Management, LLC62,974$1.84M
Occudo Quantitative Strategies LP53,934$1.57M
Ecofi Investissements SA41,200$1.20M
Axq Capital, LP38,656$1.13M
LMR Partners LLP32,000$934.4K
Magnetar Financial LLC31,907$931.7K
Verition Fund Management LLC29,024$847.5K
Lisanti Capital Growth, LLC27,940$815.8K
Sherbrooke Park Advisers LLC22,778$665.1K
Prelude Capital Management, LLC22,728$663.7K
Y-Intercept (Hong Kong) Ltd20,222$590.5K
Quantessence Capital LLC19,463$568.3K
Voleon Capital Management LP14,099$411.7K
Brevan Howard Capital Management LP11,822$345.2K
Bayforest Capital Ltd11,808$344.8K
Worldquant Millennium Advisors LLC11,407$333.1K
Virtu Financial LLC10,393$303.0K
Diversified Trust Co10,107$295.1K
Two Sigma Securities, LLC9,263$270.5K
Semanteon Capital Management, LP8,504$248.3K
Simplex Trading, LLC8,391$245.0K
Sherman Porfolios, LLC7,698$224.8K
Johnson Investment Counsel Inc7,659$223.6K
Group One Trading, L.P.7,177$209.6K
Centaurus Financial, Inc.5,516$161.0K
Quarry LP975$28.5K
FNY Investment Advisers, LLC595$17.0K
Cloud Capital Management, LLC513$14.0K
Rise Advisors, LLC424$12.4K
Advisory Services Network, LLC380$11.1K
Wealthspire Advisors, LLC290$8.47K
Medallion Wealth Advisors, LLC250$7.30K
Optiver Holding B.V.220$6.42K
Ci Investments Inc.207$6.00K
LGT Financial Advisors LLC157$4.58K
Harbour Investments, Inc.131$3.83K
Mather Group, LLC.125$3.65K
True Wealth Design, LLC111$3.24K
Principal Securities, Inc.104$3.04K
Heartwood Wealth Advisors LLC27$788
Bare Financial Services, Inc23$672
Atlantic Trust, LLC20$584
GPS Wealth Strategies Group, LLC6$175

Not filed for Q4 2025 yet (7)

Institutions that held Allegro Microsystems, Inc. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ALGM in Q3 2025 that haven't filed for Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Cubist Systematic Strategies, LLC273,675$7.99M
Point72 Hong Kong Ltd98,300$2.87M
Synovus Financial Corp23,670$691.2K
Point72 (DIFC) Ltd14,812$432.5K
Point72 Asia (Singapore) Pte. Ltd.10,049$293.4K
Point72 Europe (London) LLP4,181$122.1K
Guerra Advisors Inc30$876