PDF Solutions, Inc.

Historical 13F Holders

Symbol
PDFS
CUSIP
693282105
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 693282105 since 12/18/2024, newest first.

Filer % of Class Filed
Wasatch Advisors LP 13G 6.3% 10/9/2026
Event 9/30/2026
Advantest Corp 13G/A Amendment 1
0% 5/27/2026
Event 5/15/2026
Needham Investment Management L.L.C. 13G
5.1% 5/14/2026
Event 3/31/2026
Vanguard Group Inc 13G/A Amendment 6 0% 3/27/2026
Event 3/13/2026
Kibarian John Kachig 13G/A Amendment 21 6.5% 2/17/2026
Event 12/31/2025
Needham Investment Management LLC 13G/A Amendment 1
4.9% 2/13/2026
Event 12/31/2025
Needham Investment Management LLC 13G
5.1% 11/13/2025
Event 9/30/2025
John Kachig Kibarian 13G/A Amendment 20 6.5% 2/12/2025
Event 2/12/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 7 22.1 k $1.13 M
2026 Q2 293 41.5 M $2.79 B
2026 Q1 211 32.2 M $1.05 B
2025 Q4 191 30.6 M $874 M
2025 Q3 186 29.7 M $768 M
2025 Q2 177 29.4 M $628 M
2025 Q1 173 27.7 M $530 M
2024 Q4 182 28.3 M $766 M
2024 Q3 181 28.5 M $901 M
2024 Q2 180 28.4 M $1.03 B
2024 Q1 189 29.4 M $989 M
2023 Q4 206 29.4 M $946 M
2023 Q3 189 27.5 M $893 M
2023 Q2 184 27.6 M $1.25 B
2023 Q1 183 27.3 M $1.15 B
2022 Q4 158 27.4 M $781 M
2022 Q3 138 26.3 M $644 M
2022 Q2 128 25.9 M $557 M
2022 Q1 134 26.7 M $743 M
2021 Q4 141 26.4 M $840 M
2021 Q3 115 26.0 M $598 M
2021 Q2 119 28.0 M $509 M
2021 Q1 104 25.7 M $457 M
2020 Q4 120 27.0 M $583 M
2020 Q3 113 25.7 M $481 M
2020 Q2 116 27.9 M $549 M
2020 Q1 101 24.4 M $286 M
2019 Q4 117 26.4 M $446 M
2019 Q3 115 25.0 M $327 M
2019 Q2 112 25.5 M $334 M
2019 Q1 112 27.0 M $333 M
2018 Q4 113 28.3 M $238 M
2018 Q3 108 27.4 M $247 M
2018 Q2 107 28.2 M $337 M
2018 Q1 104 27.9 M $325 M
2017 Q4 118 29.8 M $468 M
2017 Q3 95 27.6 M $427 M
2017 Q2 93 26.5 M $436 M
2017 Q1 110 24.9 M $563 M
2016 Q4 109 24.4 M $550 M
2016 Q3 97 23.3 M $425 M
2016 Q2 107 23.0 M $322 M
2016 Q1 109 23.5 M $314 M
2015 Q4 116 22.9 M $249 M
2015 Q3 110 23.5 M $235 M
2015 Q2 104 23.9 M $382 M
2015 Q1 102 23.9 M $428 M
2014 Q4 98 22.6 M $337 M
2014 Q3 109 22.9 M $289 M
2014 Q2 112 22.6 M $478 M
2014 Q1 114 21.6 M $392 M