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Allegro MicroSystems (ALGM) Institutional Ownership

Allegro MicroSystems logo
$35.57 -0.70 (-1.93%)
Closing price 10/9/2026 04:00 PM Eastern
Extended Trading
$35.73 +0.16 (+0.45%)
As of 10/9/2026 07:46 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Allegro MicroSystems (NASDAQ:ALGM)

Current
Institutional Ownership
Percentage
56.45%
Number of
Institutional Buyers
(last 12 months)
180
Total
Institutional Inflows
(last 12 months)
$1.79B
Number of
Institutional Sellers
(last 12 months)
109
Total
Institutional Outflows
(last 12 months)
$407.39M
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ALGM Institutional Buying and Selling by Quarter

Allegro MicroSystems Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
10/9/2026GAMMA Investing LLC4,443$162K0.0%+25.3%0.002%
10/8/2026Farther Finance Advisors LLC2,399$87K0.0%-13.6%0.001%
10/8/2026Whalen Wealth Management Inc.8,166$297K0.1%+27.6%0.004%
9/9/2026Tidal Investments LLC16,729$1.17M0.0%-41.2%0.009%
9/9/2026Archford Capital Strategies LLC5,001$348K0.0%N/A0.003%
9/9/2026Engineers Gate Manager LP6,942$483K0.0%-81.0%0.004%
9/9/2026Integrated Wealth Concepts LLC4,365$304K0.0%-74.9%0.002%
9/8/2026Arizona State Retirement System34,511$2.40M0.0%-3.0%0.019%
9/8/2026Nykredit A S3,787$264K0.0%N/A0.002%
8/27/2026Corient Private Wealth LP19,425$1.35M0.0%+39.8%0.010%
8/26/2026Amundi49,273$3.43M0.0%N/A0.026%
8/26/2026HighTower Advisors LLC6,233$434K0.0%N/A0.003%
8/25/2026VIRGINIA RETIREMENT SYSTEMS ET Al23,469$1.63M0.0%N/A0.013%
8/23/2026HB Wealth Management LLC2,929$204K0.0%N/A0.002%
8/22/2026Odyssean LLC4,034$281K0.0%N/A0.002%
8/21/2026Continuum Advisory LLC500$35K0.0%N/A0.000%
8/21/2026Nykredit A S3,787$264K0.0%N/A0.002%
8/20/2026Teza Capital Management LLC3,019$210K0.4%N/A0.002%
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC323,297$22.51M0.0%-6.3%0.173%
8/19/2026Van ECK Associates Corp70,504$4.91M0.0%+68.8%0.038%
8/19/2026Braun Stacey Associates Inc.366,493$25.52M0.7%N/A0.197%
8/19/2026Hsbc Holdings PLC26,862$1.87M0.0%+46.3%0.014%
8/19/2026Wellington Management Group LLP814,937$56.74M0.0%+21.1%0.437%
8/18/2026United Capital Financial Advisors LLC3,414$238K0.0%N/A0.002%
8/18/2026Public Employees Retirement System of Ohio36,089$2.51M0.0%N/A0.019%
8/17/2026Transamerica Financial Advisors LLC386$27K0.0%N/A0.000%
8/17/2026Corient Private Wealth LP19,406$1.35M0.0%N/A0.010%
8/17/2026Bank of America Corp DE921,728$64.17M0.0%N/A0.494%
8/15/2026Freestone Grove Partners LP4,859$338K0.0%N/A0.003%
8/15/2026Odyssean LLC4,034$281K0.0%N/A0.002%
8/15/2026Man Group plc95,101$6.62M0.0%N/A0.051%
8/15/2026First Bancorp Inc ME700$49K0.0%N/A0.000%
8/15/2026Jupiter Topco LLC57,329$3.99M0.0%N/A0.031%
8/14/2026Hsbc Holdings PLC26,862$1.87M0.0%N/A0.014%
8/14/2026Canada Pension Plan Investment Board44,000$3.06M0.0%N/A0.024%
8/14/2026Castleark Management LLC141,900$9.88M0.3%N/A0.076%
8/14/2026Legal & General Group Plc164,734$11.47M0.0%N/A0.088%
8/14/2026The Manufacturers Life Insurance Company91,616$6.38M0.0%N/A0.049%
8/14/2026S Squared Technology LLC332,451$23.15M0.0%N/A0.178%
8/14/2026Whalen Wealth Management Inc.6,399$445K0.2%N/A0.003%
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8/14/2026Algert Global LLC65,240$4.54M0.1%+868.0%0.035%
8/13/2026Sanctuary Advisors LLC4,698$327K0.0%N/A0.003%
8/13/2026Meiji Yasuda Asset Management Co Ltd.2,873$200K0.0%N/A0.002%
8/12/2026Elevation Point Wealth Partners LLC6,340$441K0.0%N/A0.003%
8/12/2026Commerce Bank15,646$1.09M0.0%N/A0.008%
8/12/2026Quantbot Technologies LP1,284$89K0.0%N/A0.001%
8/12/2026Evolve Private Wealth LLC8,428$587K0.0%N/A0.005%
8/12/2026Rakuten Securities Inc.439$31K0.0%N/A0.000%
8/12/2026Callan Family Office LLC4,138$288K0.0%N/A0.002%
8/11/2026Allworth Financial LP1,517$106K0.0%N/A0.001%
8/11/2026Trillium Asset Management LLC143,348$9.98M0.3%N/A0.077%
8/11/2026Vise Technologies Inc.4,496$313K0.0%N/A0.002%
8/11/2026Lisanti Capital Growth LLC107,865$7.51M1.7%N/A0.058%
8/10/2026Csenge Advisory Group17,210$1.20M0.0%N/A0.009%
8/8/2026Meeder Advisory Services Inc.4,159$290K0.0%N/A0.002%
8/7/2026BlackRock Inc.13,889,324$966.98M0.0%N/A7.451%
8/7/2026Deutsche Bank AG88,759$6.18M0.0%N/A0.048%
8/7/2026Perigon Wealth Management LLC3,916$273K0.0%N/A0.002%
8/7/2026Mitsubishi UFJ Asset Management Co. Ltd.43,188$3.01M0.0%N/A0.023%
8/6/2026Nippon Life Global Investors Americas Inc.143,870$10.02M0.4%N/A0.077%
8/6/2026Global Retirement Partners LLC4,149$289K0.0%N/A0.002%
8/6/2026Bank of New York Mellon Corp716,952$49.91M0.0%N/A0.385%
8/6/2026State of Wyoming32,269$2.25M0.2%N/A0.017%
8/6/2026GSA Capital Partners LLP3,533$246K0.0%N/A0.002%
7/10/2026Handelsbanken Fonder AB59,900$4.17M0.0%+49.8%0.032%
7/10/2026Fulton Bank N.A.4,623$322K0.0%N/A0.002%
7/7/2026Harbor Investment Advisory LLC1,032$72K0.0%N/A0.001%
6/18/2026Pacer Advisors Inc.19,744$623K0.0%-38.9%0.011%
6/3/2026Parallel Advisors LLC1,008$32K0.0%+42.8%0.001%
5/22/2026Segall Bryant & Hamill LLC1,044,984$32.95M0.4%-16.3%0.564%
5/19/2026Bank of America Corp DE855,453$26.97M0.0%+48.3%0.462%
5/18/2026California State Teachers Retirement System149,826$4.72M0.0%+21.8%0.081%
5/18/2026Royal Bank of Canada30,337$957K0.0%-19.2%0.016%
5/16/2026The Manufacturers Life Insurance Company81,072$2.56M0.0%-1.4%0.044%
5/16/2026Maverick Capital Ltd.42,224$1.33M0.0%N/A0.023%
5/16/2026Quantinno Capital Management LP133,902$4.22M0.0%+104.9%0.072%
5/16/2026Castleark Management LLC147,420$4.65M0.2%N/A0.080%
5/15/2026Granahan Investment Management LLC215,001$6.78M0.3%+139.3%0.116%
5/15/2026Entropy Technologies LP67,719$2.14M0.1%+88.7%0.037%
5/14/2026Renaissance Technologies LLC123,900$3.91M0.0%-71.6%0.067%
5/14/2026Public Employees Retirement System of Ohio36,618$1.16M0.0%-3.4%0.020%
5/14/2026Sei Investments Co.218,976$6.90M0.0%+126.0%0.118%
5/14/2026State of Wyoming13,834$436K0.1%+29.7%0.007%
5/13/2026Cetera Investment Advisers11,656$368K0.0%-2.1%0.006%
5/13/2026First Trust Advisors LP414,897$13.08M0.0%-7.6%0.224%
5/8/2026PNC Financial Services Group Inc.13,949$440K0.0%+18.0%0.008%
5/7/2026Dimensional Fund Advisors LP2,170,487$68.40M0.0%+1.4%1.171%
5/7/2026Parallel Advisors LLC1,008$32K0.0%+42.8%0.001%
5/7/2026KBC Group NV4,581$144K0.0%+24.0%0.002%
5/7/2026SEB Asset Management AB7,798$246K0.0%N/A0.004%
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5/7/2026Swiss National Bank256,400$8.08M0.0%+0.4%0.138%
5/7/2026Roubaix Capital LLC169,993$5.36M2.5%N/A0.092%
5/6/2026Assetmark Inc.6,338$200K0.0%+12.5%0.003%
5/6/2026Lightrock Netherlands B.V.507,990$16.02M1.6%+43.3%0.274%
5/6/2026Allspring Global Investments Holdings LLC307,624$10.24M0.0%-13.6%0.166%
5/5/2026Bank of New York Mellon Corp743,292$23.44M0.0%-1.0%0.401%
5/5/2026Maryland State Retirement & Pension System6,797$214K0.0%N/A0.004%
5/4/2026State of Michigan Retirement System29,900$943K0.0%+2.0%0.016%
5/4/2026Principal Financial Group Inc.1,790,466$56.45M0.0%+2.8%0.966%
5/4/2026Teachers Retirement System of The State of Kentucky40,633$1.28M0.0%+2.5%0.022%


ALGM Institutional Ownership - Frequently Asked Questions

During the previous two years, 314 institutional investors and hedge funds held shares of Allegro MicroSystems. The most heavily invested institutionals were BlackRock Inc. ($966.98M), FMR LLC ($497.85M), Vanguard Group Inc. ($374.66M), Capital Research Global Investors ($345.88M), Invesco Ltd. ($201.84M), JPMorgan Chase & Co. ($193.83M), and State Street Corp ($141.38M).Learn more on Allegro MicroSystems' institutional investors.

56.45% of Allegro MicroSystems' stock is owned by institutional investors. Learn more on ALGM's institutional investor holdings.

Of the 288 institutional investors that purchased Allegro MicroSystems' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($13.89M), FMR LLC ($8.53M), Invesco Ltd. ($6.50M), Wellington Management Group LLP ($5.07M), Bank of America Corp DE ($4.76M), Norges Bank ($4.10M), and Alliancebernstein L.P. ($2.57M).

Institutional investors have bought a total of 37,307,206 shares in the last 24 months. This purchase volume represents approximately $1.79B in transactions.

Of the 109 institutional investors that sold Allegro MicroSystems' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Capital Research Global Investors ($3.71M), T. Rowe Price Investment Management Inc. ($1.69M), Wellington Management Group LLP ($1.53M), Balyasny Asset Management L.P. ($973.76K), Invesco Ltd. ($942.15K), JPMorgan Chase & Co. ($666.08K), and Royal Bank of Canada ($612.14K).

Institutional investors have sold a total of 14,524,062 shares in the last 24 months. This volume of shares sold represents approximately $407.39M in transactions.


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Institutional ownership data for NASDAQ:ALGM is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 10/9/2026. New 13F filings are added each quarter as they're published.
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