PDF SOLUTIONS INC

Ticker: PDFS CUSIP: 693282105 Class: Common Stock

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 306,825 Value ($000) $8,754 Avg Close $27.67 Range $23.55 - $32.31

Q3 2025

Shares 298,547 Value ($000) $7,708 Avg Close $21.84 Range $18.12 - $26.59

Q2 2025

Shares 288,532 Value ($000) $6,169 Avg Close $18.93 Range $15.91 - $21.57

Q1 2025

Shares 282,752 Value ($000) $5,403 Avg Close $24.54 Range $18.50 - $29.50

Q4 2024

Shares 270,832 Value ($000) $7,334 Avg Close $30.15 Range $26.94 - $33.42

Q3 2024

Shares 264,586 Value ($000) $8,382 Avg Close $32.46 Range $27.69 - $39.70

Q2 2024

Shares 264,543 Value ($000) $9,624 Avg Close $33.44 Range $29.21 - $37.16

Q1 2024

Shares 259,595 Value ($000) $8,741 Avg Close $32.80 Range $28.99 - $35.89

Q4 2023

Shares 247,961 Value ($000) $7,969 Avg Close $30.32 Range $26.12 - $34.09

Q3 2023

Shares 240,962 Value ($000) $7,807 Avg Close $38.29 Range $30.80 - $48.02

Q2 2023

Shares 229,357 Value ($000) $10,344 Avg Close $40.80 Range $32.25 - $45.80

Q1 2023

Shares 223,486 Value ($000) $9,476 Avg Close $35.04 Range $27.23 - $42.50

Q4 2022

Shares 223,035 Value ($000) $6,361 Avg Close $27.01 Range $21.36 - $32.56

Q3 2022

Shares 217,295 Value ($000) $5,331 Avg Close $25.27 Range $20.16 - $30.31

Q2 2022

Shares 213,041 Value ($000) $4,583 Avg Close $23.11 Range $19.34 - $28.11

Q1 2022

Shares 217,705 Value ($000) $6,068 Avg Close $27.92 Range $23.73 - $32.80

Q4 2021

Shares 212,906 Value ($000) $6,769 Avg Close $27.81 Range $22.46 - $33.78

Q3 2021

Shares 203,902 Value ($000) $4,698 Avg Close $20.60 Range $17.29 - $24.20

Q2 2021

Shares 201,954 Value ($000) $3,672 Avg Close $17.92 Range $16.70 - $19.76

Q1 2021

Shares 194,321 Value ($000) $3,456 Avg Close $19.82 Range $16.44 - $23.50

Q4 2020

Shares 189,878 Value ($000) $4,102 Avg Close $20.99 Range $18.51 - $23.42

Q3 2020

Shares 189,083 Value ($000) $3,538 Avg Close $20.60 Range $18.18 - $26.42

Q2 2020

Shares 187,751 Value ($000) $3,673 Avg Close $16.25 Range $11.05 - $19.64

Q1 2020

Shares 174,152 Value ($000) $2,042 Avg Close $14.77 Range $8.61 - $18.41

Q4 2019

Shares 171,400 Value ($000) $2,895 Avg Close $15.34 Range $12.53 - $17.42

Q3 2019

Shares 167,291 Value ($000) $2,187 Avg Close $12.62 Range $11.16 - $13.84

Q2 2019

Shares 163,436 Value ($000) $2,145 Avg Close $12.83 Range $11.77 - $14.00

Q1 2019

Shares 156,897 Value ($000) $1,938 Avg Close $11.05 Range $8.24 - $13.53

Q4 2018

Shares 152,402 Value ($000) $1,285 Avg Close $8.48 Range $7.56 - $9.45

Q3 2018

Shares 142,670 Value ($000) $1,289 Avg Close $10.06 Range $8.10 - $12.66

Q2 2018

Shares 141,294 Value ($000) $1,693 Avg Close $11.94 Range $9.62 - $13.84

Q1 2018

Shares 141,028 Value ($000) $1,645 Avg Close $13.29 Range $11.07 - $16.76

Q4 2017

Shares 127,014 Value ($000) $1,995 Avg Close $16.06 Range $14.12 - $18.48

Q3 2017

Shares 117,798 Value ($000) $1,825 Avg Close $16.12 Range $14.11 - $20.10

Q2 2017

Shares 111,844 Value ($000) $1,840 Avg Close $18.56 Range $16.07 - $23.93

Q1 2017

Shares 111,198 Value ($000) $2,516 Avg Close $22.28 Range $21.03 - $23.40

Q4 2016

Shares 105,384 Value ($000) $2,377 Avg Close $20.91 Range $17.45 - $24.44

Q3 2016

Shares 100,148 Value ($000) $1,820 Avg Close $16.29 Range $13.48 - $18.18

Q2 2016

Shares 95,776 Value ($000) $1,340 Avg Close $13.59 Range $12.09 - $15.25

Q1 2016

Shares 94,432 Value ($000) $1,264 Avg Close $10.95 Range $8.70 - $14.73

Q4 2015

Shares 92,800 Value ($000) $1,006 Avg Close $10.84 Range $9.68 - $11.76

Q3 2015

Shares 90,720 Value ($000) $908 Avg Close $12.57 Range $9.91 - $16.45

Q2 2015

Shares 85,215 Value ($000) $1,364 Avg Close $17.19 Range $14.76 - $19.52

Q1 2015

Shares 82,837 Value ($000) $1,485 Avg Close $17.39 Range $13.31 - $18.80

Q4 2014

Shares 79,473 Value ($000) $1,181 Avg Close $13.09 Range $11.62 - $15.24

Q3 2014

Shares 77,704 Value ($000) $980 Avg Close $19.84 Range $12.26 - $22.66

Q2 2014

Shares 66,582 Value ($000) $1,413 Avg Close $19.12 Range $16.60 - $21.77

Q1 2014

Shares 57,930 Value ($000) $1,053 Avg Close $22.07 Range $17.21 - $26.73

Q4 2013

Shares 56,250 Value ($000) $1,442 Avg Close $22.99 Range $20.12 - $25.90

Q3 2013

Shares 54,234 Value ($000) $1,163 Avg Close $20.57 Range $18.09 - $22.20

Q2 2013

Shares 51,518 Value ($000) $951 Avg Close $17.41 Range $14.95 - $19.03

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	306,825	$8,754	$27.67	$23.55 - $32.31
Q3 2025	298,547	$7,708	$21.84	$18.12 - $26.59
Q2 2025	288,532	$6,169	$18.93	$15.91 - $21.57
Q1 2025	282,752	$5,403	$24.54	$18.50 - $29.50
Q4 2024	270,832	$7,334	$30.15	$26.94 - $33.42
Q3 2024	264,586	$8,382	$32.46	$27.69 - $39.70
Q2 2024	264,543	$9,624	$33.44	$29.21 - $37.16
Q1 2024	259,595	$8,741	$32.80	$28.99 - $35.89
Q4 2023	247,961	$7,969	$30.32	$26.12 - $34.09
Q3 2023	240,962	$7,807	$38.29	$30.80 - $48.02
Q2 2023	229,357	$10,344	$40.80	$32.25 - $45.80
Q1 2023	223,486	$9,476	$35.04	$27.23 - $42.50
Q4 2022	223,035	$6,361	$27.01	$21.36 - $32.56
Q3 2022	217,295	$5,331	$25.27	$20.16 - $30.31
Q2 2022	213,041	$4,583	$23.11	$19.34 - $28.11
Q1 2022	217,705	$6,068	$27.92	$23.73 - $32.80
Q4 2021	212,906	$6,769	$27.81	$22.46 - $33.78
Q3 2021	203,902	$4,698	$20.60	$17.29 - $24.20
Q2 2021	201,954	$3,672	$17.92	$16.70 - $19.76
Q1 2021	194,321	$3,456	$19.82	$16.44 - $23.50
Q4 2020	189,878	$4,102	$20.99	$18.51 - $23.42
Q3 2020	189,083	$3,538	$20.60	$18.18 - $26.42
Q2 2020	187,751	$3,673	$16.25	$11.05 - $19.64
Q1 2020	174,152	$2,042	$14.77	$8.61 - $18.41
Q4 2019	171,400	$2,895	$15.34	$12.53 - $17.42
Q3 2019	167,291	$2,187	$12.62	$11.16 - $13.84
Q2 2019	163,436	$2,145	$12.83	$11.77 - $14.00
Q1 2019	156,897	$1,938	$11.05	$8.24 - $13.53
Q4 2018	152,402	$1,285	$8.48	$7.56 - $9.45
Q3 2018	142,670	$1,289	$10.06	$8.10 - $12.66
Q2 2018	141,294	$1,693	$11.94	$9.62 - $13.84
Q1 2018	141,028	$1,645	$13.29	$11.07 - $16.76
Q4 2017	127,014	$1,995	$16.06	$14.12 - $18.48
Q3 2017	117,798	$1,825	$16.12	$14.11 - $20.10
Q2 2017	111,844	$1,840	$18.56	$16.07 - $23.93
Q1 2017	111,198	$2,516	$22.28	$21.03 - $23.40
Q4 2016	105,384	$2,377	$20.91	$17.45 - $24.44
Q3 2016	100,148	$1,820	$16.29	$13.48 - $18.18
Q2 2016	95,776	$1,340	$13.59	$12.09 - $15.25
Q1 2016	94,432	$1,264	$10.95	$8.70 - $14.73
Q4 2015	92,800	$1,006	$10.84	$9.68 - $11.76
Q3 2015	90,720	$908	$12.57	$9.91 - $16.45
Q2 2015	85,215	$1,364	$17.19	$14.76 - $19.52
Q1 2015	82,837	$1,485	$17.39	$13.31 - $18.80
Q4 2014	79,473	$1,181	$13.09	$11.62 - $15.24
Q3 2014	77,704	$980	$19.84	$12.26 - $22.66
Q2 2014	66,582	$1,413	$19.12	$16.60 - $21.77
Q1 2014	57,930	$1,053	$22.07	$17.21 - $26.73
Q4 2013	56,250	$1,442	$22.99	$20.12 - $25.90
Q3 2013	54,234	$1,163	$20.57	$18.09 - $22.20
Q2 2013	51,518	$951	$17.41	$14.95 - $19.03