13F

Stock

Allegro Microsystems, Inc.

ALGM · held by 294 managers

Reported value

$3.56B

Holders

294

+4 new · −3 exited

Holders’ est. mark

−$5.76M

Price effect on 9 books still in the name

Largest holder

$623.5M

Fidelity

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Fidelity23.6M$623.5MHeld
Vanguard14.2M$374.7MHeld
Capital Research Global Investors13.1M$345.9MHeld
BlackRock, Inc.12.2M$321.9MHeld
Invesco Ltd.7.65M$201.8MHeld
JPMORGAN CHASE & CO7.35M$193.8MHeld
State Street5.36M$141.4MHeld
Clearbridge Investments, LLC2.92M$76.9MHeld
ADAGE CAPITAL PARTNERS GP, L.L.C.2.8M$74MHeld
Citadel2.56M$67.5MHeld
GEODE CAPITAL MANAGEMENT, LLC2.39M$63.2MHeld
MORGAN STANLEY2.23M$58.9M−$5.47MAdded$2.29M
DIMENSIONAL FUND ADVISORS LP2.14M$56.5MHeld
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.2.04M$53.7MHeld
Analog Century Management LP1.89M$49.9MHeld
PRINCIPAL FINANCIAL GROUP INC1.74M$46MHeld
NORGES BANK1.46M$38.5M$1.58MAdded$6.64M
CHARLES SCHWAB INVESTMENT MANAGEMENT INC1.36M$35.9MHeld
MILLENNIUM MANAGEMENT LLC1.34M$35.4MHeld
SEGALL BRYANT & HAMILL, LLC1.25M$32.9MHeld
ALLIANCEBERNSTEIN L.P.1.15M$30.3MHeld
Point72 Asset Management, L.P.1.12M$29.5MHeld
WELLINGTON MANAGEMENT GROUP LLP1.11M$29.2MHeld
NORTHERN TRUST CORP1.01M$26.8MHeld
VOYA INVESTMENT MANAGEMENT LLC940.4K$24.8MHeld
RAYMOND JAMES FINANCIAL INC908.4K$24MHeld
LOOMIS SAYLES & CO L P829.2K$21.9MHeld
Balyasny Asset Management L.P.810.5K$21.4MHeld
GOLDMAN SACHS GROUP INC796.3K$21MHeld
Schonfeld Strategic Advisors LLC754.8K$19.9MHeld
Bank of New York Mellon Corp750.6K$19.8MHeld
MARSHALL WACE, LLP714.6K$18.9MHeld
SILVERCREST ASSET MANAGEMENT GROUP LLC675.7K$17.8MHeld
BANK OF AMERICA CORP /DE/576.7K$15.2M−$1.63MCut−$12.6M
Talos Eurisko Asset Management LP560.2K$14.8MHeld
FRONTIER CAPITAL MANAGEMENT CO LLC524.9K$13.8MHeld
S Squared Technology, LLC457.5K$12.1MHeld
FIRST TRUST ADVISORS LP449K$11.8MHeld
Renaissance Technologies436.2K$11.5MHeld
Engineers Gate Manager LP419.6K$11.1MHeld
Alyeska Investment Group, L.P.400K$10.6MHeld
Man Group plc387.1K$10.2MHeld
AMERIPRISE FINANCIAL INC373.5K$9.85MHeld
Allspring Global Investments Holdings, LLC356K$9.58MHeld
Lightrock Netherlands B.V.354.4K$9.35MHeld
Squarepoint Ops LLC354K$9.34MHeld
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC330.7K$8.72MHeld
Icahn Capital328K$8.65MHeld
TWO SIGMA INVESTMENTS, LP310.9K$8.2MHeld
RHUMBLINE ADVISERS300.2K$7.92MHeld
UBS Group AG274.3K$7.24MHeld
PEREGRINE CAPITAL MANAGEMENT LLC270.9K$7.15MHeld
Swiss National Bank255.4K$6.74MHeld
Nuveen, LLC241.9K$6.38MHeld
Pier Capital, LLC231.2K$6.1MHeld
BNP PARIBAS FINANCIAL MARKETS198.8K$5.24MHeld
Retirement Systems of Alabama189.9K$5.01MHeld
Legal & General Group Plc185.6K$4.9MHeld
JANE STREET GROUP, LLC181.2K$4.78MHeld
TRILLIUM ASSET MANAGEMENT, LLC136K$3.73MHeld
ArrowMark Colorado Holdings LLC139.8K$3.69MHeld
SUSQUEHANNA INTERNATIONAL GROUP, LLP134.3K$3.54MHeld
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM123K$3.24MHeld
NEUBERGER BERMAN GROUP LLC119.7K$3.16MHeld
State of Tennessee, Department of Treasury79.2K$2.92MHeld
CITIGROUP INC106.3K$2.8MHeld
STATE OF WISCONSIN INVESTMENT BOARD97.6K$2.57MHeld
SEI INVESTMENTS CO96.9K$2.56MHeld
State of New Jersey Common Pension Fund D92.9K$2.45MHeld
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM92.8K$2.45MHeld
Summit Trail Advisors, LLC92.5K$2.44MHeld
Granahan Investment Management, LLC89.9K$2.37MHeld
BARCLAYS PLC88.3K$2.33M−$249KCut−$2.08M
Candriam S.C.A.87.9K$2.32MHeld
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.83.8K$2.21MHeld
MANUFACTURERS LIFE INSURANCE COMPANY, THE82.3K$2.17MHeld
MASSACHUSETTS FINANCIAL SERVICES CO /MA/80.2K$2.11MHeld
Trexquant Investment LP79.5K$2.1MHeld
Mitsubishi UFJ Asset Management Co., Ltd.74.4K$2MHeld
Gotham Asset Management, LLC73.1K$1.93MHeld
TWO SIGMA ADVISERS, LP70.9K$1.87MHeld
WELLS FARGO & COMPANY/MN65.4K$1.72MHeld
Quantinno Capital Management LP65.4K$1.72MHeld
Hel Ved Capital Management Ltd62.9K$1.66MHeld
MetLife Investment Management, LLC60.6K$1.6MHeld
JANUS HENDERSON GROUP PLC57.3K$1.51MHeld
D. E. Shaw & Co., Inc.55.3K$1.46MHeld
Police & Firemen's Retirement System of New Jersey52.3K$1.38MHeld
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC51.6K$1.36MHeld
NEW YORK STATE COMMON RETIREMENT FUND50.9K$1.34MHeld
Qube Research & Technologies Ltd48.1K$1.27MHeld
YOUSIF CAPITAL MANAGEMENT, LLC38.3K$1.26MHeld
GUGGENHEIM CAPITAL LLC45.6K$1.2MHeld
KENNEDY CAPITAL MANAGEMENT LLC44.9K$1.18MHeld
Zurcher Kantonalbank (Zurich Cantonalbank)42.7K$1.13MHeld
Sphera Management Technology Funds Ltd40K$1.06MHeld
NEEDHAM INVESTMENT MANAGEMENT LLC40K$1.06MHeld
HSBC HOLDINGS PLC39.8K$1.05MHeld
MOODY NATIONAL BANK TRUST DIVISION38.5K$1.01MHeld
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO37.9K$999.6KHeld
ROYAL BANK OF CANADA37.5K$990KHeld
ENVESTNET ASSET MANAGEMENT INC36.8K$971KHeld
INTECH INVESTMENT MANAGEMENT LLC36.2K$954.2KHeld
ARIZONA STATE RETIREMENT SYSTEM36K$950.7KHeld
Entropy Technologies, LP35.9K$946.9KHeld
Louisiana State Employees Retirement System34.3K$904.8KHeld
FOX RUN MANAGEMENT, L.L.C.32.7K$863.9KHeld
Pinnacle Financial Partners, Inc.32.5K$856.7KHeld
LPL Financial LLC32.5K$856.6KHeld
Pacer Advisors, Inc.32.3K$852.4KHeld
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS31K$818.8KHeld
MML INVESTORS SERVICES, LLC30.9K$814.9KHeld
COMERICA BANK29.9K$788.9KHeld
ALPS ADVISORS INC29.8K$785.8KHeld
LECAP ASSET MANAGEMENT LTD29.7K$783.4KHeld
STATE OF MICHIGAN RETIREMENT SYSTEM29.3K$772.9KHeld
Bridgefront Capital, LLC28.8K$759.8KHeld
NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC27.8K$732KHeld
PEAK6 LLC27.5K$726.6KNew
KLP KAPITALFORVALTNING AS27.5K$725.5KHeld
TUDOR INVESTMENT CORP ET AL25.7K$677KNew
XTX Topco Ltd25.6K$676.3KHeld
Creative Planning25.4K$670.2KHeld
PRENTISS SMITH & CO INC25.1K$661.1KHeld
OREGON PUBLIC EMPLOYEES RETIREMENT FUND24.7K$652.6KHeld
Advisors Asset Management, Inc.23.7K$626.4KHeld
Sumitomo Mitsui Trust Group, Inc.23.7K$625.5KHeld
LAZARD ASSET MANAGEMENT LLC23.7K$625.5KHeld
Amundi23.3K$613.5KHeld
Tidal Investments LLC23.1K$610.3KHeld
Ameritas Investment Partners, Inc.22.7K$599.6KHeld
Graham Capital Management, L.P.22.5K$594.4KHeld
Russell Investments Group, Ltd.21.2K$560.5KHeld
Pictet Asset Management Holding SA20.8K$548.4KHeld
ProShare Advisors LLC20.8K$548KHeld
DEUTSCHE BANK AG\20.2K$532.4KHeld
Ethic Inc.19.1K$503KHeld
VICTORY CAPITAL MANAGEMENT INC18.7K$493.9KHeld
Campbell & CO Investment Adviser LLC18.3K$481.6KHeld
CANADA PENSION PLAN INVESTMENT BOARD18K$474.8KHeld
Integrated Wealth Concepts LLC18K$474.2KHeld
Parallax Volatility Advisers, L.P.17.3K$456.1KHeld
TSG Advice Partners, LLC17.2K$452.9KHeld
Universal- Beteiligungs- und Servicegesellschaft mbH17.1K$450.7KHeld
Rockefeller Capital Management L.P.16.9K$445.2KHeld
Vontobel Holding Ltd.16.4K$433KHeld
ALTFEST L J & CO INC16.3K$429.7KHeld
VIRGINIA RETIREMENT SYSTEMS ET Al16.2K$426.5KHeld
Corient Private Wealth LLC14.5K$407.6KHeld
Vanguard Personalized Indexing Management, LLC14.3K$376.4KHeld
Vident Advisory, LLC14.2K$375.1KHeld
BANK OF MONTREAL /CAN/14.1K$371.3KHeld
Circle Wealth Management, LLC14K$369.4KHeld
Walleye Trading LLC13.9K$366KHeld
KEYBANK NATIONAL ASSOCIATION/OH13.6K$357.8KHeld
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC11.1K$349.4KHeld
Holocene Advisors, LP13K$341.9KHeld
INCEPTIONR LLC12.9K$341.3KHeld
Mitsubishi UFJ Trust & Banking Corp12.8K$336.4KHeld
XPONANCE LLC12.7K$336KHeld
TEACHER RETIREMENT SYSTEM OF TEXAS12.7K$335.2KHeld
Pinpoint Asset Management (Singapore) Pte. Ltd.12.1K$317.9KHeld
Cetera Investment Advisers11.9K$313.9KHeld
Mirae Asset Global Investments Co., Ltd.11.9K$313.8KHeld
PNC Financial Services Group, Inc.11.8K$311.8KHeld
Pathstone Holdings, LLC11.8K$311.6KHeld
Yorktown Management & Research Co Inc11.3K$298.1KHeld
BANQUE PICTET & CIE SA10.8K$284.1KHeld
State of Wyoming10.7K$281.4KHeld
IMC-Chicago, LLC10.6K$280.1KHeld
MERCER GLOBAL ADVISORS INC /ADV10.5K$277KHeld
AMERICAN CENTURY COMPANIES INC10.3K$271KHeld
COMMERCE BANK10.3K$270.5KHeld
STIFEL FINANCIAL CORP10.1K$265.1KHeld
FEDERATED HERMES, INC.9.97K$263.1KHeld
PROFUND ADVISORS LLC9.24K$243.9KHeld
SECURIAN ASSET MANAGEMENT, INC9.03K$238.1KHeld
MACKENZIE FINANCIAL CORP8.81K$235.9KHeld
PRUDENTIAL FINANCIAL INC8.16K$215.3KHeld
EVERGREEN CAPITAL MANAGEMENT LLC8.05K$212.3KHeld
Aquatic Capital Management LLC7.99K$210.9KHeld
JUPITER ASSET MANAGEMENT LTD7.93K$209.2KHeld
Skandinaviska Enskilda Banken AB (publ)7.8K$205.6KHeld
Sterling Capital Management LLC7.28K$192.1KHeld
Ensign Peak Advisors, Inc6.37K$167.9KHeld
ASSETMARK, INC5.63K$148.6KHeld
1620 INVESTMENT ADVISORS, INC.4.58K$120.8KHeld
Walleye Capital LLC3.6K$95.1KHeld
OSAIC HOLDINGS, INC.3.26K$86KHeld
Tower Research Capital LLC (TRC)3.25K$85.7KHeld
GAMMA Investing LLC2.96K$78.2KHeld
STRS OHIO2.95K$77.8KHeld
NISA INVESTMENT ADVISORS, LLC2.67K$70.5KHeld
TD Waterhouse Canada Inc.2.46K$64.8KHeld
NewEdge Advisors, LLC2.4K$63.3KHeld
SBI Securities Co., Ltd.2.3K$60.7KHeld
Federation des caisses Desjardins du Quebec2.18K$57.4KHeld
Farther Finance Advisors, LLC2.14K$56.5KHeld
US BANCORP \DE\2K$52.9KHeld
AlphaQuest LLC1.78K$46.9KHeld
UMB Bank, n.a.1.69K$44.6KHeld
CIBC Private Wealth Group LLC1.34K$35.5KHeld
Kestra Advisory Services, LLC1.28K$33.8KHeld
Sound Income Strategies, LLC1.01K$33.6KHeld
FIFTH THIRD BANCORP1.17K$30.9KHeld
Quent Capital, LLC997$26.3KHeld
CoreCap Advisors, LLC900$23.7KHeld
Allworth Financial LP818$21.6K−$1.91KAdded$1.78K
LOS ANGELES CAPITAL MANAGEMENT LLC616$18.6KHeld
Parallel Advisors, LLC706$18.6KHeld
GW&K Investment Management, LLC669.1K$17.7KHeld
QUADRANT CAPITAL GROUP LLC653$17.2KHeld
SIGNATUREFD, LLC653$17.2KHeld
Hurley Capital, LLC603$15.9KHeld
ROTHSCHILD INVESTMENT LLC578$15.2KHeld
EverSource Wealth Advisors, LLC551$14.5KHeld
Arax Advisory Partners393$10.4KHeld
Clearstead Advisors, LLC388$10.2KHeld
Activest Wealth Management385$10.2KHeld
JONES FINANCIAL COMPANIES LLLP378$9.97KHeld
T. Rowe Price Investment Management, Inc.349.3K$9.22KHeld
Global X Japan Co., Ltd.315$8.31KHeld
Parkside Financial Bank & Trust266$7.02KHeld
Spire Wealth Management233$6.15KHeld
HUNTINGTON NATIONAL BANK231$6.09KHeld
Smartleaf Asset Management LLC223$5.98KHeld
MassMutual Private Wealth & Trust, FSB196$5.17KHeld
Sunbelt Securities, Inc.185$4.88KHeld
FLAGSHIP HARBOR ADVISORS, LLC178$4.7KNew
Truvestments Capital LLC154$4.06KHeld
Global Retirement Partners, LLC139$3.67KHeld
SJS Investment Consulting Inc.137$3.62KHeld
Leonteq Securities AG135$3.56K−$381Cut−$381
Hilton Head Capital Partners, LLC125$3.3KHeld
Essential Partners LLC123$3.25K−$347Cut−$31.8K
Concord Wealth Partners120$3.17KHeld
Rakuten Securities, Inc.110$2.9KHeld
PRICE T ROWE ASSOCIATES INC /MD/101.4K$2.67KHeld
Bell Investment Advisors, Inc101$2.67KHeld
HRT FINANCIAL LP90.3K$2.38KHeld
WHITTIER TRUST CO OF NEVADA INC75$2.37KHeld
FARMERS & MERCHANTS INVESTMENTS INC85$2.24KHeld
SouthState Bank Corp81$2.14KHeld
MAI Capital Management70$1.85KHeld
Kilter Group LLC61$1.61K−$172Cut−$756
Pinnacle Wealth Planning Services, Inc.57$1.5KHeld
VAN ECK ASSOCIATES CORP55.5K$1.46KHeld
AMALGAMATED BANK54.3K$1.43KHeld
IFP Advisors, Inc54$1.43K−$76Added$637
Treasurer of the State of North Carolina51.6K$1.36KHeld

Who left

Positions as of Q4 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.