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PDFS Insider Trading

Insider Ownership Percentage: 11.09%
Insider Buying (Last 12 Months): $1,021,431.80
Insider Selling (Last 12 Months): $0.00

PDF Solutions Insider Trading History Chart

This chart shows the insider buying and selling history at PDF Solutions by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

PDF Solutions Share Price & Price History

Current Price: $33.18
Price Change: ▲ Price Increase of +1.58 (5.00%)
As of 02/24/2026 05:00 PM ET

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

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

PDF Solutions Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
5/13/2025Michael B. GustafsonDirectorBuy7,500$19.45$145,875.0030,074View SEC Filing Icon  
2/24/2025John Kachig KibarianCEOBuy34,356$22.80$783,316.802,507,112View SEC Filing Icon  
2/24/2025Michael B. GustafsonDirectorBuy4,000$23.06$92,240.0022,574View SEC Filing Icon  
12/16/2024Andrzej StrojwasInsiderSell5,030$30.85$155,175.5094,717View SEC Filing Icon  
12/11/2024Nancy ErbaDirectorSell2,000$30.81$61,620.0013,739View SEC Filing Icon  
6/3/2024Shuo ZhangDirectorSell5,500$34.66$190,630.0010,381View SEC Filing Icon  
5/17/2024Adnan RazaCFOSell9,647$33.95$327,515.6548,218View SEC Filing Icon  
5/15/2024Adnan RazaCFOSell1,343$34.52$46,360.3674,369View SEC Filing Icon  
2/26/2024Ye Jane LiDirectorSell9,653$33.27$321,155.3112,132View SEC Filing Icon  
2/23/2024Ye Jane LiDirectorSell1,531$34.00$52,054.0021,785View SEC Filing Icon  
12/12/2023Michael B. GustafsonDirectorSell867$31.29$27,128.4319,075View SEC Filing Icon  
11/29/2023Nancy ErbaDirectorSell1,800$30.57$55,026.0015,739View SEC Filing Icon  
8/18/2023Shuo ZhangDirectorSell3,047$33.75$102,836.2515,881View SEC Filing Icon  
3/8/2023Andrzej StrojwasInsiderSell2,520$38.45$96,894.0087,139View SEC Filing Icon  
3/3/2023Adnan RazaCFOSell15,547$37.64$585,189.0875,000View SEC Filing Icon  
2/28/2023Michael B. GustafsonDirectorSell13,316$37.26$496,154.1616,588View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for PDF Solutions (NASDAQ:PDFS)

79.51% of PDF Solutions 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 PDFS by year and by quarter.

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

PDF Solutions Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/19/2026Invesco Ltd.136,138$3.88M0.0%+26.6%0.345%Search for SEC Filing on Google Icon
2/18/2026State of Tennessee Department of Treasury6,752$0.19M0.0%-52.5%0.017%Search for SEC Filing on Google Icon
2/18/2026Pillsbury Lake Capital LLC376,069$10.73M3.7%N/A0.952%Search for SEC Filing on Google Icon
2/18/2026Susquehanna Fundamental Investments LLC32,230$0.92M0.0%+2.6%0.082%Search for SEC Filing on Google Icon
2/18/2026Numerai GP LLC7,492$0.21M0.0%-50.0%0.019%Search for SEC Filing on Google Icon
2/18/2026Ophir Asset Management Pty Ltd723,127$20.63M2.3%N/A1.830%Search for SEC Filing on Google Icon
2/18/2026Inspire Investing LLC16,270$0.46M0.0%-8.5%0.041%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC912,135$26.02M0.0%+16.4%2.309%Search for SEC Filing on Google Icon
2/18/2026Boothbay Fund Management LLC55,432$1.58M0.0%-3.5%0.140%Search for SEC Filing on Google Icon
2/17/2026Guggenheim Capital LLC11,757$0.34M0.0%N/A0.030%Search for SEC Filing on Google Icon
2/17/2026Brown Capital Management LLC125,137$3.57M0.3%N/A0.317%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC46,232$1.32M0.0%-29.7%0.117%Search for SEC Filing on Google Icon
2/17/2026ArrowMark Colorado Holdings LLC493,343$14.08M0.3%+9.2%1.249%Search for SEC Filing on Google Icon
2/17/2026Amundi15,465$0.44M0.0%N/A0.039%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD19,156$0.55M0.0%+13.8%0.048%Search for SEC Filing on Google Icon
2/17/2026California State Teachers Retirement System30,945$0.88M0.0%+7.8%0.078%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.407,370$11.62M0.0%+8.8%1.031%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada10,618$0.30M0.0%-41.2%0.027%Search for SEC Filing on Google Icon
2/17/2026Rice Hall James & Associates LLC147,655$4.21M0.2%-7.9%0.374%Search for SEC Filing on Google Icon
2/17/2026Needham Investment Management LLC1,965,000$56.06M3.5%-2.7%4.973%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC217,560$6.21M0.0%-14.5%0.551%Search for SEC Filing on Google Icon
2/16/2026Verition Fund Management LLC37,536$1.07M0.0%+169.9%0.095%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC50,556$1.44M0.0%+1.9%0.128%Search for SEC Filing on Google Icon
2/16/2026Bridge City Capital LLC102,324$2.92M0.9%-12.4%0.259%Search for SEC Filing on Google Icon
2/13/2026Kestra Advisory Services LLC2,874$82K0.0%N/A0.007%Search for SEC Filing on Google Icon
2/13/2026The Manufacturers Life Insurance Company 9,799$0.28M0.0%-13.6%0.025%Search for SEC Filing on Google Icon
2/13/2026Samjo Management LLC1,151,019$32.84M12.5%+2.7%2.913%Search for SEC Filing on Google Icon
2/13/2026CANADA LIFE ASSURANCE Co25,033$0.71M0.0%-37.8%0.063%Search for SEC Filing on Google Icon
2/13/2026Public Sector Pension Investment Board110,729$3.16M0.0%-11.2%0.280%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.306,825$8.75M0.0%+2.8%0.777%Search for SEC Filing on Google Icon
2/13/2026State Street Corp1,151,576$32.85M0.0%+0.5%2.915%Search for SEC Filing on Google Icon
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC57,878$1.65M0.0%+18.2%0.146%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN80,702$2.30M0.0%+22.9%0.204%Search for SEC Filing on Google Icon
2/12/2026Wasatch Advisors LP522,320$14.90M0.1%-4.7%1.322%Search for SEC Filing on Google Icon
2/12/2026Jane Street Group LLC49,156$1.40M0.0%+212.2%0.124%Search for SEC Filing on Google Icon
2/12/2026Dimensional Fund Advisors LP800,963$22.85M0.0%-1.3%2.027%Search for SEC Filing on Google Icon
2/12/2026Federated Hermes Inc.19,300$0.55M0.0%N/A0.049%Search for SEC Filing on Google Icon
2/12/2026Snyder Capital Management L P955,435$27.26M0.5%+19.4%2.418%Search for SEC Filing on Google Icon
2/12/2026Loomis Sayles & Co. L P465,182$13.27M0.0%+28.1%1.177%Search for SEC Filing on Google Icon
2/12/2026Swiss National Bank62,400$1.78M0.0%+3.8%0.158%Search for SEC Filing on Google Icon
2/12/2026Nuveen LLC110,629$3.16M0.0%+37.6%0.280%Search for SEC Filing on Google Icon
2/11/2026LPL Financial LLC10,399$0.30M0.0%+7.6%0.026%Search for SEC Filing on Google Icon
2/11/2026CenterBook Partners LP34,476$0.98M0.0%-80.5%0.087%Search for SEC Filing on Google Icon
2/11/2026State of Wyoming5,851$0.17M0.0%N/A0.015%Search for SEC Filing on Google Icon
2/10/2026Goldman Sachs Group Inc.189,818$5.42M0.0%+35.1%0.480%Search for SEC Filing on Google Icon
2/10/2026Natixis Advisors LLC16,070$0.46M0.0%+26.4%0.041%Search for SEC Filing on Google Icon
2/10/2026Intech Investment Management LLC11,394$0.33M0.0%+8.3%0.029%Search for SEC Filing on Google Icon
2/9/2026Geode Capital Management LLC770,152$21.98M0.0%+0.6%1.949%Search for SEC Filing on Google Icon
2/9/2026Penn Capital Management Company LLC19,976$0.57M0.0%-83.0%0.051%Search for SEC Filing on Google Icon
2/9/2026Fisher Asset Management LLC40,603$1.16M0.0%+6.6%0.103%Search for SEC Filing on Google Icon
2/9/2026Hantz Financial Services Inc.1,116$32K0.0%+122.8%0.003%Search for SEC Filing on Google Icon
2/9/2026William Blair Investment Management LLC1,358,481$38.76M0.1%+0.7%3.438%Search for SEC Filing on Google Icon
2/9/2026Lisanti Capital Growth LLC105,540$3.01M0.7%N/A0.267%Search for SEC Filing on Google Icon
2/6/2026Legato Capital Management LLC53,530$1.53M0.1%+96.4%0.135%Search for SEC Filing on Google Icon
2/6/2026Nano Cap New Millennium Growth Fund L P19,500$0.56M0.5%N/A0.049%Search for SEC Filing on Google Icon
2/6/2026PNC Financial Services Group Inc.7,096$0.20M0.0%+12.1%0.018%Search for SEC Filing on Google Icon
2/5/2026Dana Investment Advisors Inc.55,277$1.58M0.0%-35.3%0.140%Search for SEC Filing on Google Icon
1/30/2026M&T Bank Corp20,165$0.58M0.0%+28.8%0.051%Search for SEC Filing on Google Icon
1/29/2026Comerica Bank7,040$0.20M0.0%-19.4%0.018%Search for SEC Filing on Google Icon
1/29/2026Teachers Retirement System of The State of Kentucky7,939$0.23M0.0%-9.8%0.020%Search for SEC Filing on Google Icon
1/29/2026Vanguard Group Inc.3,089,519$88.14M0.0%-2.1%7.820%Search for SEC Filing on Google Icon
1/28/2026Arizona State Retirement System8,802$0.25M0.0%-4.8%0.022%Search for SEC Filing on Google Icon
1/21/2026Yousif Capital Management LLC8,610$0.25M0.0%-11.6%0.022%Search for SEC Filing on Google Icon
1/16/2026Clarus Group Inc.10,553$0.30M0.1%+22.1%0.027%Search for SEC Filing on Google Icon
1/15/2026Nisa Investment Advisors LLC1,362$39K0.0%-33.3%0.003%Search for SEC Filing on Google Icon
1/12/2026CVA Family Office LLC17,774$0.51M0.1%N/A0.045%Search for SEC Filing on Google Icon
1/12/2026Silverberg Bernstein Capital Management LLC473,883$13.52M7.8%+3.3%1.199%Search for SEC Filing on Google Icon
1/9/2026SG Americas Securities LLC18,959$0.54M0.0%+36.1%0.048%Search for SEC Filing on Google Icon
1/9/2026Assenagon Asset Management S.A.21,329$0.61M0.0%+4.0%0.054%Search for SEC Filing on Google Icon
1/7/2026Significant Wealth Partners LLC8,977$0.26M0.3%-54.0%0.023%Search for SEC Filing on Google Icon
1/1/2026JPMorgan Chase & Co.13,648$0.35M0.0%-73.7%0.035%Search for SEC Filing on Google Icon
12/15/2025FNY Investment Advisers LLC16,610$0.43M0.1%N/A0.042%Search for SEC Filing on Google Icon
11/24/2025Penn Capital Management Company LLC117,463$3.03M0.2%+2.4%0.297%Search for SEC Filing on Google Icon
11/17/2025Dark Forest Capital Management LP51,347$1.33M0.0%+6.2%0.130%Search for SEC Filing on Google Icon
11/17/2025Wasatch Advisors LP547,818$14.15M0.1%-54.0%1.386%Search for SEC Filing on Google Icon
11/17/2025Verition Fund Management LLC13,908$0.36M0.0%-36.8%0.035%Search for SEC Filing on Google Icon
11/17/2025Susquehanna Fundamental Investments LLC31,421$0.81M0.0%-25.9%0.080%Search for SEC Filing on Google Icon
11/17/2025Susquehanna International Group LLP21,359$0.55M0.0%-53.8%0.054%Search for SEC Filing on Google Icon
11/17/2025Qube Research & Technologies Ltd57,860$1.49M0.0%-63.1%0.146%Search for SEC Filing on Google Icon
11/17/2025Prelude Capital Management LLC101,051$2.61M0.2%N/A0.256%Search for SEC Filing on Google Icon
11/17/2025Numerai GP LLC14,983$0.39M0.1%N/A0.038%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.14,971$0.39M0.0%-14.4%0.038%Search for SEC Filing on Google Icon
11/17/2025Divisar Capital Management LLC684,082$17.66M4.8%+11.9%1.731%Search for SEC Filing on Google Icon
11/17/2025Cannell Capital LLC337,315$8.71M1.3%N/A0.854%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE76,257$1.97M0.0%-26.3%0.193%Search for SEC Filing on Google Icon
11/17/2025Boothbay Fund Management LLC57,442$1.48M0.0%N/A0.145%Search for SEC Filing on Google Icon
11/17/2025Aquatic Capital Management LLC5,446$0.14M0.0%-6.9%0.014%Search for SEC Filing on Google Icon
11/17/2025ArrowMark Colorado Holdings LLC451,788$11.67M0.2%+595.1%1.143%Search for SEC Filing on Google Icon
11/17/2025Algert Global LLC89,292$2.31M0.0%-14.7%0.226%Search for SEC Filing on Google Icon
11/17/2025Ameriprise Financial Inc.63,206$1.63M0.0%-39.6%0.160%Search for SEC Filing on Google Icon
11/14/2025Raymond James Financial Inc.33,776$0.87M0.0%+20.8%0.085%Search for SEC Filing on Google Icon
11/14/2025Man Group plc42,385$1.09M0.0%N/A0.107%Search for SEC Filing on Google Icon
11/14/2025UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC48,964$1.26M0.0%-42.8%0.124%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP10,758$0.28M0.0%N/A0.027%Search for SEC Filing on Google Icon
11/14/2025Squarepoint Ops LLC254,511$6.57M0.0%+378.6%0.644%Search for SEC Filing on Google Icon
11/14/2025iSAM Funds UK Ltd3,888$100K0.0%N/A0.010%Search for SEC Filing on Google Icon
11/14/2025Comerica Bank8,735$0.23M0.0%-16.9%0.022%Search for SEC Filing on Google Icon
11/13/2025Landscape Capital Management L.L.C.16,318$0.42M0.0%N/A0.041%Search for SEC Filing on Google Icon
11/13/2025Johnson Financial Group Inc.3,200$83K0.0%N/A0.008%Search for SEC Filing on Google Icon
11/13/2025Arrowstreet Capital Limited Partnership107,882$2.79M0.0%+169.4%0.273%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
PDF Solutions logo
PDF Solutions, Inc. provides proprietary software and physical intellectual property products for integrated circuit designs, electrical measurement hardware tools, proven methodologies, and professional services in the United States, China, Japan, and internationally. The company offers Exensio software products, such as Manufacturing Analytics that store collected data in a common environment with a consistent view for enabling product engineers to identify and analyze production yield, performance, reliability, and other issues; Process Control that provides failure detection and classification capabilities for monitoring, alarming, and controlling manufacturing tool sets; Test Operations that offer data collection and analysis capabilities; and Assembly Operations that provide device manufacturers with the capability to link assembly and packaging data, including fabrication and characterization data over the product life cycle. It also provides Design-For-Inspection (DFI) systems, such as DFI On-Chip Instruments; eProbe Non-Contact E-Beam Tool; and Characterization Vehicle (CV) system, which includes CV Test Chips and pdFasTest Electrical Testers, as well as Exensio characterization software, designed to analyze the measurements collected using the eProbe tool. In addition, the company offers Cimetrix software products that enables equipment manufacturers to provide industry standard interfaces on their products; and software-as-a-service, software related services, and characterization services. It sells its technologies and services through direct sales force, service teams, and strategic alliances to integrated device manufacturers, fabless semiconductor companies, foundries, equipment manufacturers, electronics manufacturing suppliers, original device manufacturers, out-sourced semiconductor assembly and test, and system houses. PDF Solutions, Inc. was founded in 1991 and is headquartered in Santa Clara, California.
Read More on PDF Solutions

Today's Range

Now: $33.18
Low: $31.42
High: $33.71

50 Day Range

MA: $31.53
Low: $27.02
High: $35.86

52 Week Range

Now: $33.18
Low: $15.91
High: $36.99

Volume

229,843 shs

Average Volume

318,768 shs

Market Capitalization

$1.31 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.55

Who are the company insiders with the largest holdings of PDF Solutions?

PDF Solutions' top insider investors include:
  1. John Kachig Kibarian (CEO)
  2. Andrzej Strojwas (Insider)
  3. Adnan Raza (CFO)
  4. Michael B Gustafson (Director)
  5. Nancy Erba (Director)
  6. Ye Jane Li (Director)
  7. Shuo Zhang (Director)
Learn More about top insider investors at PDF Solutions.

Who are the major institutional investors of PDF Solutions?

PDF Solutions' top institutional investors include:
  1. Vanguard Group Inc. — 7.82%
  2. Needham Investment Management LLC — 4.97%
  3. William Blair Investment Management LLC — 3.44%
  4. State Street Corp — 2.91%
  5. Samjo Management LLC — 2.91%
  6. Snyder Capital Management L P — 2.42%
Learn More about top institutional investors of PDF Solutions stock.

Which institutional investors are selling PDF Solutions stock?

In the previous quarter, PDFS stock was sold by these institutional investors:
  1. CenterBook Partners LP
  2. Penn Capital Management Company LLC
  3. Vanguard Group Inc.
  4. Needham Investment Management LLC
  5. Squarepoint Ops LLC
  6. Dana Investment Advisors Inc.
  7. Wasatch Advisors LP
  8. AQR Capital Management LLC

Which institutional investors are buying PDF Solutions stock?

Within the last quarter, PDFS stock was bought by institutional investors including:
  1. Ophir Asset Management Pty Ltd
  2. Pillsbury Lake Capital LLC
  3. Snyder Capital Management L P
  4. Janus Henderson Group PLC
  5. Brown Capital Management LLC
  6. Lisanti Capital Growth LLC
  7. Loomis Sayles & Co. L P
  8. Goldman Sachs Group Inc.
During the previous year, these company insiders have bought PDF Solutions stock:
  1. John Kachig Kibarian (CEO)
  2. Andrzej Strojwas (Insider)
Learn More investors buying PDF Solutions stock.