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ALGM Insider Trading

Insider Ownership Percentage: 0.40%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $271,207.46

Allegro MicroSystems Insider Trading History Chart

This chart shows the insider buying and selling history at Allegro MicroSystems by year and by quarter.

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Allegro MicroSystems Share Price & Price History

Current Price: $38.77
Price Change: ▼ Price Decrease of -2.922 (-7.01%)
As of 02/18/2026 04:49 PM ET

This chart shows the closing price history over time for ALGM up to the past year.

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Days: 30 | 90 | 365

Allegro MicroSystems Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
8/22/2025Roald Graham WebsterCAOSell8,266$32.81$271,207.4617,300View SEC Filing Icon  
11/18/2024Michael DoogueSVPBuy15,000$19.00$285,000.00246,086View SEC Filing Icon  
8/7/2024Electric Co. Ltd. SankenMajor ShareholderSell10,017,315$23.16$232,001,015.4059,732,782View SEC Filing Icon  
7/29/2024Electric Co. Ltd. SankenMajor ShareholderSell28,750,000$23.16$665,850,000.0069,750,097View SEC Filing Icon  
5/30/2024Richard R LuryDirectorSell8,500$30.00$255,000.0023,001View SEC Filing Icon  
11/17/2023Vineet A. NargolwalaCEOBuy1,000$27.84$27,840.00302,161View SEC Filing Icon  
9/15/2023Derek D'AntilioCFOBuy1,488$33.63$50,041.44142,899View SEC Filing Icon  
8/23/2023Joseph R. MartinDirectorSell17,000$38.73$658,410.0022,374View SEC Filing Icon  
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SEC Filings (Institutional Ownership Changes) for Allegro MicroSystems (NASDAQ:ALGM)

56.45% of Allegro MicroSystems stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at ALGM by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Allegro MicroSystems Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/18/2026Gotham Asset Management LLC73,093$1.93M0.0%-41.3%0.039%Search for SEC Filing on Google Icon
2/18/2026Engineers Gate Manager LP419,600$11.07M0.1%+506.7%0.226%Search for SEC Filing on Google Icon
2/18/2026Balyasny Asset Management L.P.810,460$21.38M0.0%+62.6%0.437%Search for SEC Filing on Google Icon
2/17/2026Guggenheim Capital LLC45,571$1.20M0.0%+125.2%0.025%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC754,824$19.91M0.1%+838.1%0.407%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC327,973$8.65M0.0%+31.0%0.177%Search for SEC Filing on Google Icon
2/17/2026Cetera Investment Advisers11,901$0.31M0.0%-20.5%0.006%Search for SEC Filing on Google Icon
2/17/2026Lazard Asset Management LLC23,712$0.63M0.0%-25.1%0.013%Search for SEC Filing on Google Icon
2/17/2026ArrowMark Colorado Holdings LLC139,761$3.69M0.1%-6.6%0.075%Search for SEC Filing on Google Icon
2/17/2026Trexquant Investment LP79,486$2.10M0.0%-58.0%0.043%Search for SEC Filing on Google Icon
2/17/2026Amundi23,256$0.61M0.0%+131.6%0.013%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD101,366$2.68M0.0%+4.9%0.055%Search for SEC Filing on Google Icon
2/17/2026T. Rowe Price Investment Management Inc.131,141$3.46M0.0%-87.9%0.071%Search for SEC Filing on Google Icon
2/17/2026Adage Capital Partners GP L.L.C.2,803,944$73.97M0.1%+77.8%1.513%Search for SEC Filing on Google Icon
2/17/2026Public Employees Retirement System of Ohio37,893$1M0.0%-3.4%0.020%Search for SEC Filing on Google Icon
2/17/2026California State Teachers Retirement System122,998$3.25M0.0%+3.6%0.066%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.21,249$0.56M0.0%+46.6%0.011%Search for SEC Filing on Google Icon
2/17/2026Granahan Investment Management LLC89,857$2.37M0.1%N/A0.048%Search for SEC Filing on Google Icon
2/17/2026State of Wisconsin Investment Board97,609$2.58M0.0%-12.7%0.053%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada37,534$0.99M0.0%-94.2%0.020%Search for SEC Filing on Google Icon
2/17/2026Graham Capital Management L.P.22,533$0.59M0.0%+37.9%0.012%Search for SEC Filing on Google Icon
2/17/2026Talos Eurisko Asset Management LP560,200$14.78M2.6%N/A0.302%Search for SEC Filing on Google Icon
2/16/2026Vanguard Personalized Indexing Management LLC14,268$0.38M0.0%+3.0%0.008%Search for SEC Filing on Google Icon
2/16/2026PEAK6 LLC27,542$0.73M0.0%-60.5%0.015%Search for SEC Filing on Google Icon
2/16/2026S Squared Technology LLC457,451$12.07M4.7%+15.1%0.247%Search for SEC Filing on Google Icon
2/16/2026MML Investors Services LLC30,892$0.82M0.0%N/A0.017%Search for SEC Filing on Google Icon
2/16/2026Kennedy Capital Management LLC44,860$1.18M0.0%-20.8%0.024%Search for SEC Filing on Google Icon
2/16/2026Entropy Technologies LP35,895$0.95M0.1%N/A0.019%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC88,300$2.33M0.0%-41.5%0.048%Search for SEC Filing on Google Icon
2/16/2026Analog Century Management LP1,890,072$49.86M2.5%+60.9%1.020%Search for SEC Filing on Google Icon
2/13/2026Kestra Advisory Services LLC1,281$34K0.0%N/A0.001%Search for SEC Filing on Google Icon
2/13/2026Marshall Wace LLP714,579$18.85M0.0%+417.5%0.386%Search for SEC Filing on Google Icon
2/13/2026The Manufacturers Life Insurance Company 82,250$2.17M0.0%-2.8%0.044%Search for SEC Filing on Google Icon
2/13/2026Segall Bryant & Hamill LLC1,248,310$32.93M0.4%-5.7%0.674%Search for SEC Filing on Google Icon
2/13/2026Bridgefront Capital LLC28,801$0.76M0.2%N/A0.016%Search for SEC Filing on Google Icon
2/13/2026Morgan Stanley2,233,136$58.91M0.0%+15.2%1.205%Search for SEC Filing on Google Icon
2/13/2026First Trust Advisors LP448,980$11.84M0.0%-18.6%0.242%Search for SEC Filing on Google Icon
2/13/2026Integrated Wealth Concepts LLC17,976$0.47M0.0%N/A0.010%Search for SEC Filing on Google Icon
2/13/2026Alyeska Investment Group L.P.400,000$10.55M0.0%N/A0.216%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.1,362,418$35.94M0.0%+5.2%0.735%Search for SEC Filing on Google Icon
2/13/2026Police & Firemen s Retirement System of New Jersey52,277$1.38M0.0%-3.3%0.028%Search for SEC Filing on Google Icon
2/13/2026State Street Corp5,359,488$141.38M0.0%+1.5%2.892%Search for SEC Filing on Google Icon
2/13/2026Van ECK Associates Corp55,496$1.46M0.0%-8.6%0.030%Search for SEC Filing on Google Icon
2/13/2026Vontobel Holding Ltd.16,413$0.43M0.0%-7.4%0.009%Search for SEC Filing on Google Icon
2/13/2026Caitong International Asset Management Co. Ltd1,449$38K0.1%+85.8%0.001%Search for SEC Filing on Google Icon
2/13/2026Hel Ved Capital Management Ltd62,850$1.66M0.4%N/A0.034%Search for SEC Filing on Google Icon
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC330,709$8.72M0.0%-2.0%0.178%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN65,373$1.73M0.0%-56.9%0.035%Search for SEC Filing on Google Icon
2/13/2026Pinpoint Asset Management Singapore Pte. Ltd.12,050$0.32M0.1%N/A0.007%Search for SEC Filing on Google Icon
2/13/2026Trillium Asset Management LLC136,021$3.73M0.1%-18.3%0.073%Search for SEC Filing on Google Icon
2/13/2026Circle Wealth Management LLC14,002$0.37M0.0%-21.0%0.008%Search for SEC Filing on Google Icon
2/12/2026Advisors Asset Management Inc.23,744$0.63M0.0%+5.5%0.013%Search for SEC Filing on Google Icon
2/12/2026Federation des caisses Desjardins du Quebec2,176$57K0.0%N/A0.001%Search for SEC Filing on Google Icon
2/12/2026HRT Financial LP90,344$2.38M0.0%+21.4%0.049%Search for SEC Filing on Google Icon
2/12/2026MetLife Investment Management LLC60,588$1.60M0.0%-4.9%0.033%Search for SEC Filing on Google Icon
2/12/2026Renaissance Technologies LLC436,200$11.51M0.0%N/A0.235%Search for SEC Filing on Google Icon
2/12/2026Dimensional Fund Advisors LP2,140,147$56.46M0.0%+8.6%1.155%Search for SEC Filing on Google Icon
2/12/2026Federated Hermes Inc.9,973$0.26M0.0%-10.0%0.005%Search for SEC Filing on Google Icon
2/12/2026Ensign Peak Advisors Inc6,366$0.17M0.0%-72.9%0.003%Search for SEC Filing on Google Icon
2/12/2026Skandinaviska Enskilda Banken AB publ 7,798$0.21M0.0%N/A0.004%Search for SEC Filing on Google Icon
2/12/2026Campbell & CO Investment Adviser LLC18,255$0.48M0.0%N/A0.010%Search for SEC Filing on Google Icon
2/12/2026CIBC Private Wealth Group LLC1,345$35K0.0%+14,844.4%0.001%Search for SEC Filing on Google Icon
2/12/2026Bank of Montreal Can14,075$0.37M0.0%+5.8%0.008%Search for SEC Filing on Google Icon
2/12/2026Loomis Sayles & Co. L P829,239$21.88M0.0%+3.4%0.448%Search for SEC Filing on Google Icon
2/12/2026Alps Advisors Inc.29,789$0.79M0.0%+2.8%0.016%Search for SEC Filing on Google Icon
2/12/2026Swiss National Bank255,400$6.74M0.0%+1.8%0.138%Search for SEC Filing on Google Icon
2/12/2026Xponance LLC12,736$0.34M0.0%-15.2%0.007%Search for SEC Filing on Google Icon
2/11/2026Inceptionr LLC12,939$0.34M0.1%+30.9%0.007%Search for SEC Filing on Google Icon
2/11/2026Deutsche Bank AG20,182$0.53M0.0%+34.6%0.011%Search for SEC Filing on Google Icon
2/11/2026GW&K Investment Management LLC669,146$17.65M0.2%-2.1%0.361%Search for SEC Filing on Google Icon
2/11/2026Fox Run Management L.L.C.32,747$0.86M0.1%-31.2%0.018%Search for SEC Filing on Google Icon
2/11/2026LPL Financial LLC32,473$0.86M0.0%-13.4%0.018%Search for SEC Filing on Google Icon
2/11/2026JPMorgan Chase & Co.7,347,422$193.83M0.0%-5.0%3.965%Search for SEC Filing on Google Icon
2/11/2026Clearbridge Investments LLC2,916,785$76.95M0.1%-0.5%1.574%Search for SEC Filing on Google Icon
2/11/2026Capital Research Global Investors13,111,292$345.88M0.1%-22.1%7.076%Search for SEC Filing on Google Icon
2/11/2026State of Wyoming10,669$0.28M0.0%-33.4%0.006%Search for SEC Filing on Google Icon
2/10/2026Goldman Sachs Group Inc.796,329$21.01M0.0%+130.6%0.430%Search for SEC Filing on Google Icon
2/10/2026Natixis Advisors LLC39,330$1.04M0.0%-5.7%0.021%Search for SEC Filing on Google Icon
2/10/2026Commonwealth of Pennsylvania Public School Empls Retrmt SYS31,037$0.82M0.0%-2.5%0.017%Search for SEC Filing on Google Icon
2/10/2026BNP Paribas Financial Markets198,785$5.24M0.0%+37.5%0.107%Search for SEC Filing on Google Icon
2/10/2026Norges Bank1,457,805$38.46M0.0%N/A0.787%Search for SEC Filing on Google Icon
2/10/2026Jupiter Asset Management Ltd.7,931$0.21M0.0%N/A0.004%Search for SEC Filing on Google Icon
2/10/2026Intech Investment Management LLC36,173$0.95M0.0%N/A0.020%Search for SEC Filing on Google Icon
2/9/2026Geode Capital Management LLC2,393,968$63.17M0.0%+1.0%1.292%Search for SEC Filing on Google Icon
2/9/2026Legal & General Group Plc185,648$4.90M0.0%-5.8%0.100%Search for SEC Filing on Google Icon
2/9/2026Hantz Financial Services Inc.3,667$97K0.0%+307.0%0.002%Search for SEC Filing on Google Icon
2/6/2026PNC Financial Services Group Inc.11,820$0.31M0.0%-19.7%0.006%Search for SEC Filing on Google Icon
2/6/2026ProShare Advisors LLC20,773$0.55M0.0%+24.4%0.011%Search for SEC Filing on Google Icon
2/4/2026VIRGINIA RETIREMENT SYSTEMS ET Al16,169$0.43M0.0%-6.4%0.009%Search for SEC Filing on Google Icon
2/4/2026Securian Asset Management Inc.9,027$0.24M0.0%-2.8%0.005%Search for SEC Filing on Google Icon
2/3/2026Ethic Inc.19,069$0.50M0.0%-2.7%0.010%Search for SEC Filing on Google Icon
2/3/2026Pier Capital LLC231,184$6.10M1.0%-1.7%0.125%Search for SEC Filing on Google Icon
2/3/2026Mitsubishi UFJ Asset Management Co. Ltd.74,366$2M0.0%-29.8%0.040%Search for SEC Filing on Google Icon
2/3/2026SBI Securities Co. Ltd.2,301$61K0.0%+343.4%0.001%Search for SEC Filing on Google Icon
2/2/2026Principal Financial Group Inc.1,742,296$45.96M0.0%-9.0%0.941%Search for SEC Filing on Google Icon
1/30/2026State of New Jersey Common Pension Fund D92,928$2.45M0.0%+34.9%0.050%Search for SEC Filing on Google Icon
1/30/2026Keybank National Association OH13,565$0.36M0.0%-5.9%0.007%Search for SEC Filing on Google Icon
1/30/2026Mitsubishi UFJ Trust & Banking Corp12,752$0.34M0.0%N/A0.007%Search for SEC Filing on Google Icon
1/29/2026Comerica Bank29,905$0.79M0.0%-6.4%0.016%Search for SEC Filing on Google Icon
1/29/2026Pictet Asset Management Holding SA20,787$0.55M0.0%+19.5%0.011%Search for SEC Filing on Google Icon
Data available starting January 2016

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Allegro MicroSystems logo
Allegro MicroSystems, Inc., together with its subsidiaries, designs, develops, manufactures, and markets sensor integrated circuits (ICs) and application-specific analog power ICs for motion control and energy-efficient systems. Its products include magnetic sensor ICs, such as position, speed, and current sensor ICs; and power ICs comprising motor driver ICs, regulator and LED driver ICs, and isolated gate drivers. The company sells its products to original equipment manufacturers and distributors primarily in the automotive and industrial markets through its direct sales force, third party distributors, independent sales representatives, and consignment. It operates in the United States, rest of the Americas, Europe, Japan, Greater China, South Korea, and other Asian markets. The company was founded in 1990 and is headquartered in Manchester, New Hampshire. Allegro MicroSystems, Inc. is a subsidiary of Sanken Electric Co., Ltd.
Read More on Allegro MicroSystems

Today's Range

Now: $38.77
Low: $38.02
High: $40.25

50 Day Range

MA: $32.55
Low: $25.48
High: $42.81

52 Week Range

Now: $38.77
Low: $16.38
High: $43.86

Volume

3,130,973 shs

Average Volume

2,901,827 shs

Market Capitalization

$7.18 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.63

Who are the company insiders with the largest holdings of Allegro MicroSystems?

Allegro MicroSystems' top insider investors include:
  1. Electric Co Ltd Sanken (Major Shareholder)
  2. Michael Doogue (SVP)
  3. Richard R Lury (Director)
  4. Roald Graham Webster (CAO)
Learn More about top insider investors at Allegro MicroSystems.

Who are the major institutional investors of Allegro MicroSystems?

Allegro MicroSystems' top institutional investors include:
  1. Vanguard Group Inc. — 7.67%
  2. Capital Research Global Investors — 7.08%
  3. JPMorgan Chase & Co. — 3.97%
  4. State Street Corp — 2.89%
  5. Clearbridge Investments LLC — 1.57%
  6. Adage Capital Partners GP L.L.C. — 1.51%
Learn More about top institutional investors of Allegro MicroSystems stock.

Which major investors are selling Allegro MicroSystems stock?

During the last quarter, ALGM stock was sold by these institutional investors:
  1. Capital Research Global Investors
  2. IMC Chicago LLC
  3. T. Rowe Price Investment Management Inc.
  4. Caption Management LLC
  5. Royal Bank of Canada
  6. Jane Street Group LLC
  7. JPMorgan Chase & Co.
  8. Group One Trading LLC

Which major investors are buying Allegro MicroSystems stock?

During the previous quarter, ALGM stock was bought by institutional investors including:
  1. Norges Bank
  2. Adage Capital Partners GP L.L.C.
  3. Analog Century Management LP
  4. Schonfeld Strategic Advisors LLC
  5. Marshall Wace LLP
  6. Talos Eurisko Asset Management LP
  7. Goldman Sachs Group Inc.
  8. Renaissance Technologies LLC