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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): $216,795.50

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: $28.95
Price Change: ▼ Price Decrease of -0.08 (-0.28%)
As of 12/4/2025 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  
2/22/2023Joseph R BronsonDirectorSell12,500$36.47$455,875.0038,102View 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
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
11/13/2025UBS Group AG99,635$2.57M0.0%-17.0%0.252%Search for SEC Filing on Google Icon
11/13/2025Connor Clark & Lunn Investment Management Ltd.395,110$10.20M0.0%+15.8%1.000%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets10,594$0.27M0.0%+25.6%0.027%Search for SEC Filing on Google Icon
11/13/2025Legal & General Group Plc86,938$2.25M0.0%-2.6%0.220%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.374,251$9.66M0.0%+18.9%0.948%Search for SEC Filing on Google Icon
11/13/2025Inceptionr LLC12,648$0.33M0.1%N/A0.032%Search for SEC Filing on Google Icon
11/13/2025Natixis Advisors LLC12,713$0.33M0.0%+7.6%0.032%Search for SEC Filing on Google Icon
11/13/2025First Trust Advisors LP34,767$0.90M0.0%N/A0.088%Search for SEC Filing on Google Icon
11/12/2025Barclays PLC49,631$1.28M0.0%-21.7%0.126%Search for SEC Filing on Google Icon
11/12/2025Pitcairn Co.18,028$0.47M0.0%+39.0%0.046%Search for SEC Filing on Google Icon
11/12/2025Snyder Capital Management L P800,357$20.67M0.4%-1.5%2.027%Search for SEC Filing on Google Icon
11/12/2025Dimensional Fund Advisors LP811,293$20.95M0.0%-4.2%2.054%Search for SEC Filing on Google Icon
11/12/2025Legato Capital Management LLC27,262$0.70M0.1%+44.4%0.069%Search for SEC Filing on Google Icon
11/12/2025Teachers Retirement System of The State of Kentucky8,799$0.23M0.0%-7.9%0.022%Search for SEC Filing on Google Icon
11/12/2025Victory Capital Management Inc.37,600$0.97M0.0%+29.7%0.095%Search for SEC Filing on Google Icon
11/12/2025Roubaix Capital LLC206,348$5.33M2.5%N/A0.522%Search for SEC Filing on Google Icon
11/12/2025Fisher Asset Management LLC38,086$0.98M0.0%-12.8%0.096%Search for SEC Filing on Google Icon
11/12/2025William Blair Investment Management LLC1,349,441$34.84M0.1%+13.7%3.417%Search for SEC Filing on Google Icon
11/12/2025Intech Investment Management LLC10,516$0.27M0.0%-40.4%0.027%Search for SEC Filing on Google Icon
11/10/2025Dana Investment Advisors Inc.85,395$2.21M0.1%+43.7%0.216%Search for SEC Filing on Google Icon
11/7/2025CenterBook Partners LP176,463$4.56M0.2%+11.1%0.447%Search for SEC Filing on Google Icon
11/7/2025GSA Capital Partners LLP67,131$1.73M0.1%N/A0.170%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.3,154,619$81.45M0.0%-0.9%7.988%Search for SEC Filing on Google Icon
11/7/2025JPMorgan Chase & Co.13,648$0.35M0.0%-73.7%0.035%Search for SEC Filing on Google Icon
11/7/2025PNC Financial Services Group Inc.6,332$0.16M0.0%+44.3%0.016%Search for SEC Filing on Google Icon
11/6/2025Prescott Group Capital Management L.L.C.20,000$0.52M0.1%N/A0.051%Search for SEC Filing on Google Icon
11/6/2025Public Sector Pension Investment Board124,673$3.22M0.0%+16.8%0.316%Search for SEC Filing on Google Icon
11/6/2025Rhumbline Advisers86,918$2.24M0.0%-34.3%0.220%Search for SEC Filing on Google Icon
11/5/2025Ranger Investment Management L.P.1,057,210$27.30M1.9%+1.1%2.677%Search for SEC Filing on Google Icon
11/5/2025Envestnet Asset Management Inc.46,283$1.20M0.0%-6.6%0.117%Search for SEC Filing on Google Icon
11/4/2025Principal Financial Group Inc.154,675$3.99M0.0%-0.5%0.392%Search for SEC Filing on Google Icon
11/4/2025UMB Bank n.a.951$25K0.0%+138.9%0.002%Search for SEC Filing on Google Icon
11/4/2025Significant Wealth Partners LLC19,499$0.50M0.2%+4.5%0.049%Search for SEC Filing on Google Icon
11/3/2025AlphaQuest LLC16,457$0.43M0.0%+214.6%0.042%Search for SEC Filing on Google Icon
11/3/2025Arizona State Retirement System9,250$0.24M0.0%N/A0.023%Search for SEC Filing on Google Icon
11/3/2025New York State Common Retirement Fund35,411$0.91M0.0%+30.6%0.090%Search for SEC Filing on Google Icon
11/3/2025Clarus Group Inc.8,643$0.22M0.1%N/A0.022%Search for SEC Filing on Google Icon
10/31/2025Vanguard Personalized Indexing Management LLC7,897$0.20M0.0%N/A0.020%Search for SEC Filing on Google Icon
10/31/2025Mutual of America Capital Management LLC108,204$2.79M0.0%+1.7%0.274%Search for SEC Filing on Google Icon
10/30/2025Emerald Mutual Fund Advisers Trust594,610$15.35M0.8%+2.3%1.506%Search for SEC Filing on Google Icon
10/30/2025Emerald Advisers LLC942,655$24.34M0.8%-1.2%2.387%Search for SEC Filing on Google Icon
10/29/2025Wealth Enhancement Advisory Services LLC16,088$0.41M0.0%+32.8%0.041%Search for SEC Filing on Google Icon
10/29/2025Amalgamated Bank9,237$0.24M0.0%+4.0%0.023%Search for SEC Filing on Google Icon
10/24/2025State of Alaska Department of Revenue17,399$0.45M0.0%-6.7%0.044%Search for SEC Filing on Google Icon
10/23/2025SG Americas Securities LLC13,933$0.36M0.0%N/A0.035%Search for SEC Filing on Google Icon
10/16/2025Rice Hall James & Associates LLC160,263$4.14M0.2%+74.8%0.406%Search for SEC Filing on Google Icon
10/15/2025Inspire Investing LLC17,786$0.46M0.0%-3.7%0.045%Search for SEC Filing on Google Icon
10/14/2025Yousif Capital Management LLC9,738$0.25M0.0%-16.1%0.025%Search for SEC Filing on Google Icon
10/9/2025Voya Investment Management LLC51,894$1.34M0.0%-11.1%0.131%Search for SEC Filing on Google Icon
10/7/2025Silverberg Bernstein Capital Management LLC458,783$11.85M7.2%+9.6%1.162%Search for SEC Filing on Google Icon
10/7/2025Assenagon Asset Management S.A.20,503$0.53M0.0%-11.6%0.052%Search for SEC Filing on Google Icon
8/27/2025Squarepoint Ops LLC53,174$1.14M0.0%-39.3%0.135%Search for SEC Filing on Google Icon
8/26/2025Thrivent Financial for Lutherans23,024$0.49M0.0%-93.4%0.058%Search for SEC Filing on Google Icon
8/19/2025Ranger Investment Management L.P.1,045,545$22.35M1.6%+19.2%2.648%Search for SEC Filing on Google Icon
8/19/2025State of Wyoming15,447$0.33M0.0%+4.5%0.039%Search for SEC Filing on Google Icon
8/19/2025Pitcairn Co.12,966$0.28M0.0%-20.5%0.033%Search for SEC Filing on Google Icon
8/16/2025Public Sector Pension Investment Board106,778$2.28M0.0%+8.6%0.270%Search for SEC Filing on Google Icon
8/15/2025Tower Research Capital LLC TRC 3,392$73K0.0%+257.1%0.009%Search for SEC Filing on Google Icon
8/15/2025State of Tennessee Department of Treasury30,122$0.64M0.0%+44.2%0.076%Search for SEC Filing on Google Icon
8/15/2025Wasatch Advisors LP1,191,373$25.47M0.1%+3.7%3.017%Search for SEC Filing on Google Icon
8/15/2025BNP Paribas Financial Markets8,435$0.18M0.0%-58.3%0.021%Search for SEC Filing on Google Icon
8/15/2025Brevan Howard Capital Management LP10,561$0.23M0.0%N/A0.027%Search for SEC Filing on Google Icon
8/15/2025Bank of America Corp DE103,443$2.21M0.0%+50.8%0.262%Search for SEC Filing on Google Icon
8/15/2025Ameriprise Financial Inc.104,632$2.24M0.0%+50.7%0.265%Search for SEC Filing on Google Icon
8/14/2025Kent Lake PR LLC142,221$3.04M1.4%N/A0.360%Search for SEC Filing on Google Icon
8/14/2025Raymond James Financial Inc.27,967$0.60M0.0%N/A0.071%Search for SEC Filing on Google Icon
8/14/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.17,492$0.37M0.0%-5.3%0.044%Search for SEC Filing on Google Icon
8/14/2025The Manufacturers Life Insurance Company 16,883$0.36M0.0%+5.3%0.043%Search for SEC Filing on Google Icon
8/14/2025Squarepoint Ops LLC53,174$1.14M0.0%-39.3%0.135%Search for SEC Filing on Google Icon
8/14/2025Nebula Research & Development LLC15,292$0.33M0.0%-5.3%0.039%Search for SEC Filing on Google Icon
8/14/2025Qube Research & Technologies Ltd156,759$3.35M0.0%+79.0%0.397%Search for SEC Filing on Google Icon
8/14/2025Federated Hermes Inc.29,735$0.64M0.0%+96.2%0.075%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: $28.95
Low: $28.50
High: $29.64

50 Day Range

MA: $26.88
Low: $23.97
High: $29.30

52 Week Range

Now: $28.95
Low: $15.91
High: $31.82

Volume

289,461 shs

Average Volume

287,776 shs

Market Capitalization

$1.14 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.56

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. Ye Jane Li (Director)
  6. Nancy Erba (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. — 7.99%
  2. William Blair Investment Management LLC — 3.42%
  3. Ranger Investment Management L.P. — 2.68%
  4. Emerald Advisers LLC — 2.39%
  5. Dimensional Fund Advisors LP — 2.05%
  6. Snyder Capital Management L P — 2.03%
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. Wasatch Advisors LP
  2. Qube Research & Technologies Ltd
  3. Rhumbline Advisers
  4. Ameriprise Financial Inc.
  5. JPMorgan Chase & Co.
  6. UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC
  7. Dimensional Fund Advisors LP
  8. Vanguard Group Inc.
During the previous year, company insiders that have sold PDF Solutions company stock include:
  1. John Kachig Kibarian (CEO)
  2. Andrzej Strojwas (Insider)
Learn More investors selling PDF Solutions stock.

Which institutional investors are buying PDF Solutions stock?

During the previous quarter, PDFS stock was purchased by institutional investors including:
  1. ArrowMark Colorado Holdings LLC
  2. Cannell Capital LLC
  3. Roubaix Capital LLC
  4. Squarepoint Ops LLC
  5. William Blair Investment Management LLC
  6. Prelude Capital Management LLC
  7. Divisar Capital Management LLC
  8. Rice Hall James & Associates LLC
Within the last 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.