PDF SOLUTIONS INC

Ticker: PDFS CUSIP: 693282105 Class: Common Stock

Aperio Group, LLC's Holding History (CIK: 0001364615)

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

Q2 2019

Shares 1,903 Value ($000) $25 Avg Close $12.83 Range $11.77 - $14.00

Q3 2018

Shares 11,313 Value ($000) $102 Avg Close $10.06 Range $8.10 - $12.66

Q2 2018

Shares 10,989 Value ($000) $132 Avg Close $11.94 Range $9.62 - $13.84

Q1 2018

Shares 15,846 Value ($000) $185 Avg Close $13.29 Range $11.07 - $16.76

Q4 2017

Shares 13,781 Value ($000) $216 Avg Close $16.06 Range $14.12 - $18.48

Q3 2017

Shares 13,027 Value ($000) $202 Avg Close $16.12 Range $14.11 - $20.10

Q2 2017

Shares 15,745 Value ($000) $259 Avg Close $18.56 Range $16.07 - $23.93

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2019	1,903	$25	$12.83	$11.77 - $14.00
Q3 2018	11,313	$102	$10.06	$8.10 - $12.66
Q2 2018	10,989	$132	$11.94	$9.62 - $13.84
Q1 2018	15,846	$185	$13.29	$11.07 - $16.76
Q4 2017	13,781	$216	$16.06	$14.12 - $18.48
Q3 2017	13,027	$202	$16.12	$14.11 - $20.10
Q2 2017	15,745	$259	$18.56	$16.07 - $23.93