PDF SOLUTIONS INC

Ticker: PDFS CUSIP: 693282105 Class: Common Stock

STEVENS CAPITAL MANAGEMENT LP's Holding History (CIK: 0001134813)

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

Q3 2015

Shares 18,370 Value ($000) $184 Avg Close $12.57 Range $9.91 - $16.45

Q2 2015

Shares 19,012 Value ($000) $304 Avg Close $17.19 Range $14.76 - $19.52

Q2 2014

Shares 16,162 Value ($000) $343 Avg Close $19.12 Range $16.60 - $21.77

Q1 2014

Shares 11,175 Value ($000) $203 Avg Close $22.07 Range $17.21 - $26.73

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2015	18,370	$184	$12.57	$9.91 - $16.45
Q2 2015	19,012	$304	$17.19	$14.76 - $19.52
Q2 2014	16,162	$343	$19.12	$16.60 - $21.77
Q1 2014	11,175	$203	$22.07	$17.21 - $26.73