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Disclosery

ALGM ALLEGRO MICROSYSTEMS INC

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COM (common), issuer CIK 866291

290 managers (296 13F filers) reported a position in ALGM shares at 2025-09-30, 135,899,821 shares in all. 66 filers opened a position and 43 filers sold out during the quarter.

Managers
290
13F filers
296
New
66
Added
79
Reduced
108
Sold out
43
Shares held by filers
135,899,821

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
GROUP ONE TRADING LLC7,177$210K0.01%-45,68413F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.6,165$189K<0.01%+57413F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD6,200$181K<0.01%+10013F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC6,040$176K<0.01%-30213F-HRTimelineGroup
CENTAURUS FINANCIAL, INC.5,516$161K0.01%new13F-HRTimeline
AlphaQuest LLC5,074$148K0.01%-2,68413F-HRTimeline
1620 INVESTMENT ADVISORS, INC.4,782$140K0.09%-16213F-HRTimeline
Global Retirement Partners, LLC4,494$131K<0.01%+4,37313F-HRTimeline
Point72 Europe (London) LLP4,181$122K0.01%new13F-HRTimeline
NISA INVESTMENT ADVISORS, LLC3,945$115K<0.01%+1,73513F-HRTimeline
KBC Group NVin group KBC Group NV3,694$108K<0.01%013F-HRTimelineGroup
GAMMA Investing LLC3,177$92.8K0.01%+30813F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…3,026$88.4K<0.01%+1,02513F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…2,958$86.4K<0.01%new13F-HRTimelineGroup
STRS OHIO2,943$85.9K<0.01%-26,17913F-HRTimeline
NewEdge Advisors, LLC2,483$72.5K<0.01%+2,46313F-HRTimeline
TD Waterhouse Canada Inc.2,459$69.9K<0.01%-57913F-HRTimeline
UMB Bank, n.a.1,861$54.3K<0.01%+2613F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Arax Advisory Partners1,841$53.8K<0.01%+1,36713F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\1,670$48.8K<0.01%+9113F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…1,267$37K<0.01%+4513F-HRTimelineGroup
Essential Partners LLC1,200$35K0.01%new13F-HRTimeline
Quarry LP975$28.5K0.01%-52313F-HRTimeline
Quent Capital, LLC946$27.6K<0.01%new13F-HRTimeline
CoreCap Advisors, LLC900$26.3K<0.01%013F-HRTimeline
Parallel Advisors, LLC894$26.1K<0.01%+4713F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.901$26K<0.01%+41913F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Sound Income Strategies, LLC855$23.7K<0.01%+16313F-HRTimeline
Caitong International Asset Management …780$22.8K0.02%new13F-HRTimeline
QUADRANT CAPITAL GROUP LLC779$22.7K<0.01%new13F-HRTimeline
Allworth Financial LP678$19.8K<0.01%+18413F-HRTimeline
SIGNATUREFD, LLC606$17.7K<0.01%-2213F-HRTimeline
Hurley Capital, LLC603$17.6K0.01%013F-HRTimeline
FNY Investment Advisers, LLC595$17K0.01%+26013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…574$16.8K<0.01%-21413F-HRTimelineGroup
SBI Securities Co., Ltd.519$15.2K<0.01%+23413F-HRTimeline
Clearstead Advisors, LLC481$14K<0.01%+37813F-HRTimeline
Cloud Capital Management, LLC513$14K0.01%new13F-HRTimeline
Covestor Ltd441$13K0.01%-20113F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC432$13K<0.01%013F-HRTimelineGroup
Rise Advisors, LLC424$12.4K<0.01%013F-HRTimeline
Smartleaf Asset Management LLC394$11.5K<0.01%new13F-HRTimeline
Advisory Services Network, LLC380$11.1K<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC377$11K<0.01%+33713F-HRTimeline
Global X Japan Co., Ltd.315$9.2K<0.01%-17213F-HRTimeline
Wealthspire Advisors, LLC290$8.47K<0.01%new13F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK258$7.53K<0.01%013F-HRTimelineGroup
Parkside Financial Bank & Trust253$7.39K<0.01%013F-HRTimeline
Medallion Wealth Advisors, LLC250$7.3K<0.01%013F-HRTimeline
Farther Finance Advisors, LLC234$6.83K<0.01%+1013F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management226$6.6K<0.01%013F-HRTimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.220$6.42K<0.01%new13F-HRTimelineGroup
CI INVESTMENTS INC.in group CI INVESTMENTS INC.207$6K<0.01%new13F-HRTimelineGroup
MassMutual Private Wealth & Trust, FSB201$5.87K<0.01%013F-HRTimeline
Rakuten Securities, Inc.in group Rakuten Group, Inc.178$5.2K<0.01%+16613F-HRTimelineGroup
LGT Financial Advisors LLC157$4.58K0.01%013F-HRTimeline
Truvestments Capital LLC154$4.5K<0.01%new13F-HRTimeline
Versant Capital Management, Inc147$4.29K<0.01%+12713F-HRTimeline
Leonteq Securities AG135$3.94K<0.01%-4513F-HRTimeline
HARBOUR INVESTMENTS, INC.131$3.83K<0.01%new13F-HRTimeline
MATHER GROUP, LLC.125$3.65K<0.01%new13F-HRTimeline
Concord Wealth Partnersin group Concord Wealth Partners120$3.5K<0.01%013F-HRTimelineGroup
True Wealth Design, LLC111$3.24K<0.01%new13F-HRTimeline
Bell Investment Advisors, Inc101$2.95K<0.01%013F-HRTimeline
WHITTIER TRUST CO OF NEVADA INC104$2.94K<0.01%-9013F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…85$2.48K<0.01%013F-HRTimelineGroup
Kilter Group LLC81$2.37K<0.01%+1713F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP61$1.81K<0.01%-20913F-HRTimelineGroup
Blue Trust, Inc.46$1.34K<0.01%013F-HRTimeline
Root Financial Partners, LLC42$1.23K<0.01%new13F-HRTimeline
Larson Financial Group LLC38$1.11K<0.01%new13F-HRTimeline
Fortitude Family Office, LLC35$1.02K<0.01%013F-HRTimeline
Guerra Advisors Inc30$876<0.01%new13F-HRTimeline
Cornerstone Planning Group LLC12$809<0.01%-313F-HRTimeline
IFP Advisors, Inc27$788<0.01%+2713F-HR/ATimeline
Heartwood Wealth Advisors LLC27$788<0.01%new13F-HRTimeline
Bogart Wealth, LLC23$672<0.01%013F-HRTimeline
Bare Financial Services, Inc23$672<0.01%013F-HRTimeline
Clearstead Trust, LLC20$584<0.01%013F-HRTimeline
Cromwell Holdings LLC19$555<0.01%013F-HRTimeline
MV CAPITAL MANAGEMENT, INC.14$409<0.01%013F-HRTimeline
SouthState Bank Corpin group SouthState Bank Corp10$292<0.01%013F-HRTimelineGroup
KAYNE ANDERSON RUDNICK INVESTMENT MANAG…9$263<0.01%013F-HRTimeline
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.9$263<0.01%013F-HRTimelineGroup
IMA Advisory Services, Inc.8$234<0.01%013F-HRTimeline
GPS Wealth Strategies Group, LLC6$175<0.01%013F-HRTimeline
CREATIVE FINANCIAL DESIGNS INC /ADV5$146<0.01%013F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp5$146<0.01%013F-HRTimelineGroup
TFC Financial Management, Inc.1$30<0.01%013F-HRTimeline
Avion Wealth34$00%+1713F-HRTimelineValue filed as zero, left out of ratios.

Events

  • FMR LLC and 1 other reporting person reported 9,913,112 ALGM shares, 5.3% of the class, as of 2026-09-30, in a 13G/A filed 2026-10-07. 0000315066-26-002338

    Accepted , ingested