PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

Guinness Atkinson Asset Management Inc's Holding History (CIK: 0001409765)

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

Q1 2014

Shares 81,370 Value ($000) $2,578 Avg Close $27.81 Range $24.37 - $31.95

Q4 2013

Shares 96,670 Value ($000) $2,448 Avg Close $23.93 Range $21.29 - $26.09

Q3 2013

Shares 106,170 Value ($000) $2,270 Avg Close $20.54 Range $18.83 - $22.41

Q2 2013

Shares 109,670 Value ($000) $2,123 Avg Close $21.83 Range $18.96 - $25.12

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	81,370	$2,578	$27.81	$24.37 - $31.95
Q4 2013	96,670	$2,448	$23.93	$21.29 - $26.09
Q3 2013	106,170	$2,270	$20.54	$18.83 - $22.41
Q2 2013	109,670	$2,123	$21.83	$18.96 - $25.12