| Investor | Value | Of portfolio | Shares | Change | Quarter |
|---|---|---|---|---|---|
| Bridgewater Associates · Ray Dalio | $340.3K | 0.00% | 4.81K | New | Q2 2026 |
From each investor's quarterly 13F filing with the SEC: positions at the quarter's end, reported up to 45 days later. All investors
No member of Congress has disclosed a PDFS trade since 2025.
From House and Senate STOCK Act reports. Members disclose trades, not holdings, as value ranges up to 45 days later, so amounts are estimates and “last move” is a hint at who still holds it, not a position. All recent congress trades
| Date | Insider | Transaction | Shares | Value |
|---|---|---|---|---|
| Aug 30, 2026 | Strojwas AndrzejChief Technology Officer | Sale at price 44.41 per share. | 3.4K | $150.73K |
| Aug 11, 2026 | Zhang ShuoDirector | Sale at price 51.47 per share. | 1.5K | $77.26K |
| Jun 30, 2026 | Chan Chi-FoonDirector | Stock Award(Grant) at price 0.00 per share. | 2.7K | — |
| Jun 30, 2026 | Bronson Joseph R.Director | Stock Award(Grant) at price 0.00 per share. | 2.7K | — |
| Jun 30, 2026 | Gustafson Michael BDirector | Stock Award(Grant) at price 0.00 per share. | 2.7K | — |
| Jun 30, 2026 | Strojwas AndrzejChief Technology Officer | Stock Award(Grant) at price 0.00 per share. | 5.4K | — |
| Jun 30, 2026 | Li Ye JaneDirector | Stock Award(Grant) at price 0.00 per share. | 2.7K | — |
| Jun 30, 2026 | Erba NancyDirector | Stock Award(Grant) at price 0.00 per share. | 2.7K | — |
| Jun 30, 2026 | Raza AdnanChief Financial Officer | Stock Award(Grant) at price 0.00 per share. | 23.4K | — |
| Jun 30, 2026 | Zhang ShuoDirector | Stock Award(Grant) at price 0.00 per share. | 2.7K | — |
| Dec 8, 2025 | Michaels Kimon WOfficer and Director | Stock Gift at price 0.00 per share. | 5.1K | — |
| Jul 31, 2025 | Strojwas AndrzejChief Technology Officer | Stock Award(Grant) at price 0.00 per share. | 8K | — |
| Jul 31, 2025 | Raza AdnanChief Financial Officer | Stock Award(Grant) at price 0.00 per share. | 35K | — |
| Jun 30, 2025 | Chan Chi-FoonDirector | Stock Award(Grant) at price 0.00 per share. | 7.4K | — |
| Jun 30, 2025 | Bronson Joseph R.Director | Stock Award(Grant) at price 0.00 per share. | 7.4K | — |
| Jun 30, 2025 | Gustafson Michael BDirector | Stock Award(Grant) at price 0.00 per share. | 7.4K | — |
| Jun 30, 2025 | Li Ye JaneDirector | Stock Award(Grant) at price 0.00 per share. | 7.4K | — |
| Jun 30, 2025 | Erba NancyDirector | Stock Award(Grant) at price 0.00 per share. | 7.4K | — |
| Jun 30, 2025 | Zhang ShuoDirector | Stock Award(Grant) at price 0.00 per share. | 7.4K | — |
| May 12, 2025 | Gustafson Michael BDirector | Purchase at price 19.45 per share. | 7.5K | $145.88K |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 11.6 | 6.1 | -3.2 | 31.0 | 14.0 | 45.0 | -34.9 | -3.5 | 14.8 | 3.2 | +84.7% | ||
| 2025 | 2.9 | -19.2 | -15.1 | -4.0 | -3.5 | 20.8 | 4.0 | -8.0 | 26.3 | 12.8 | -7.0 | 5.3 | +5.4% |
| 2024 | -2.9 | 8.9 | -0.9 | -10.7 | 16.4 | 3.9 | -3.5 | -10.1 | 0.4 | -10.6 | 11.6 | -14.3 | −15.7% |
| 2023 | 11.4 | 17.8 | 13.2 | -15.0 | 17.2 | 6.7 | 2.0 | -21.0 | -10.8 | -18.1 | 13.0 | 7.2 | +12.7% |
| 2022 | -6.5 | -8.0 | 1.9 | -16.6 | 2.8 | -10.0 | 25.4 | -2.2 | -7.0 | -3.9 | 33.0 | -9.1 | −10.3% |
| 2021 | -10.6 | -5.0 | -3.2 | -0.3 | -1.6 | 4.2 | 2.9 | 20.4 | 2.3 | 2.1 | 27.2 | 6.2 | +47.2% |
| 2020 | -6.7 | -7.1 | -19.9 | 36.3 | 6.8 | 14.7 | 25.7 | -15.8 | -9.6 | 0.2 | 17.8 | -2.1 | +27.9% |
| 2019 | 24.7 | 13.3 | 3.7 | 5.1 | -6.4 | 8.0 | 1.8 | -12.3 | 11.6 | 23.6 | -2.0 | 6.6 | +100.4% |
| 2018 | -12.9 | -18.6 | 4.7 | -4.4 | 13.4 | -5.2 | -12.4 | -17.0 | 3.6 | -11.4 | 15.6 | -8.9 | −46.3% |
| 2017 | -0.2 | -5.0 | 5.8 | -15.9 | -14.6 | 1.3 | -2.4 | -5.4 | 2.0 | -5.4 | 23.5 | -13.2 | −30.4% |
| 2016 | -0.1 | 4.9 | 17.8 | 0.5 | 9.4 | -4.9 | 17.9 | 1.5 | 8.5 | 8.7 | 19.2 | -4.2 | +108.0% |
| 2015 | 11.8 | 9.1 | -1.2 | 0.8 | -11.8 | 0.4 | -12.4 | -13.1 | -17.9 | 5.6 | 5.6 | -2.8 | −27.1% |
| 2014 | -7.5 | -14.0 | -10.9 | 3.3 | 6.1 | 6.5 | -9.7 | 4.2 | -36.9 | 2.9 | 2.2 | 12.2 | −42.0% |
| 2013 | 9.0 | 3.5 | 3.1 | 6.8 | 7.1 | 0.5 | 11.3 | -3.3 | 7.0 | 8.2 | 1.0 | 10.4 | +85.9% |
| 2012 | -8.3 | 25.7 | 5.0 | 4.6 | 0.3 | 11.5 | -5.7 | 29.4 | 13.4 | -3.1 | 4.8 | -0.7 | +97.7% |
| 2011 | 20.1 | 19.5 | -3.9 | -5.0 | -0.2 | -5.5 | 0.7 | -16.2 | -18.9 | 26.7 | 20.9 | 11.5 | +44.6% |
| 2010 | 2.9 | -0.3 | 10.4 | 13.5 | -3.8 | 0.8 | -14.6 | -15.6 | 6.6 | 9.8 | -1.5 | 20.8 | +25.2% |
| 2009 | 4.2 | -28.7 | 46.7 | 14.6 | 4.4 | 35.6 | -9.8 | 17.0 | 29.7 | 1.4 | -5.4 | 14.9 | +167.4% |
| 2008 | -4.1 | -34.0 | -3.3 | -13.2 | 18.0 | 5.5 | -23.5 | 39.6 | -18.1 | -42.3 | -32.7 | -28.7 | −84.0% |
| 2007 | -23.1 | 2.5 | -0.9 | -0.5 | -12.1 | 19.9 | -6.3 | -12.0 | 1.2 | -20.0 | 0.4 | 13.6 | −37.6% |
PDF Solutions, Inc. provides proprietary software, physical intellectual property for integrated circuit designs, electrical measurement hardware tools, proven methodologies, and professional services in the United States, Japan, China, and internationally. The company offers Exensio software, such as Manufacturing Analytics, which uses a proprietary database schema to store collected data; Process Control, which provides failure detection and classification capabilities for monitoring, alarming, and controlling manufacturing tool sets; Test Operations, which offer data collection and analysis capabilities; and Assembly Operations, which provide device manufacturers with the capability to link assembly and packaging data, including fabrication and characterization data across the product life cycle. It also provides Sapience Data Platform, which unifies fragmented data from diverse equipment and protocols across the factory floor; Sapience Manufacturing Hub enterprise, a connectivity platform between enterprise applications; DirectScan systems, such as Proprietary Software and eProbe Non-Contact E-Beam Tool; and Characterization Vehicle (CV) system, which includes CV Test Chips, pdFasTest Electrical Tester, and Exensio characterization software. In addition, the company offers Cimetrix software products that enable equipment manufacturers to provide standard interfaces on their products for equipment communication, control, and data collection; equipment factory connectivity products, such as Cimetrix CIMConnect, Cimetrix CIM300, and Cimetrix CIMPortal Plus; equipment factory connectivity testing and control products; secureWISE systems, including software, servers, and networks; software-as-a-service; software and hardware installation and configuration; system/data integration, and value realization; and technical support and maintenance for hardware and software. PDF Solutions, Inc. was founded in 1991 and is headquartered in Santa Clara, California.
Buy / hold / sell counts