PDF SOLUTIONS INC

Ticker: PDFS CUSIP: 693282105 Class: Common Stock

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q2 2025

Shares 48,707 Value ($000) $1,041 Avg Close $18.93 Range $15.91 - $21.57

Q1 2025

Shares 89,311 Value ($000) $1,707 Avg Close $24.54 Range $18.50 - $29.50

Q4 2021

Shares 46,744 Value ($000) $1,485 Avg Close $27.81 Range $22.46 - $33.78

Q2 2020

Shares 42,703 Value ($000) $835 Avg Close $16.25 Range $11.05 - $19.64

Q1 2020

Shares 198,167 Value ($000) $2,322 Avg Close $14.77 Range $8.61 - $18.41

Q4 2019

Shares 143,099 Value ($000) $2,417 Avg Close $15.34 Range $12.53 - $17.42

Q3 2019

Shares 11,214 Value ($000) $147 Avg Close $12.62 Range $11.16 - $13.84

Q1 2014

Shares 24,130 Value ($000) $438 Avg Close $22.07 Range $17.21 - $26.73

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	48,707	$1,041	$18.93	$15.91 - $21.57
Q1 2025	89,311	$1,707	$24.54	$18.50 - $29.50
Q4 2021	46,744	$1,485	$27.81	$22.46 - $33.78
Q2 2020	42,703	$835	$16.25	$11.05 - $19.64
Q1 2020	198,167	$2,322	$14.77	$8.61 - $18.41
Q4 2019	143,099	$2,417	$15.34	$12.53 - $17.42
Q3 2019	11,214	$147	$12.62	$11.16 - $13.84
Q1 2014	24,130	$438	$22.07	$17.21 - $26.73