AXT INC

Ticker: AXTI CUSIP: 00246W103 Class: COM

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q4 2017

Shares 10,072 Value ($000) $88 Avg Close $9.14 Range $7.65 - $10.75

Q2 2017

Shares 62 Value ($000) $0 Avg Close $6.54 Range $5.50 - $7.83

Q1 2017

Shares 8,112 Value ($000) $47 Avg Close $6.21 Range $4.68 - $8.65

Q4 2016

Shares 3,124 Value ($000) $15 Avg Close $5.15 Range $4.35 - $5.97

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	10,072	$88	$9.14	$7.65 - $10.75
Q2 2017	62	$0	$6.54	$5.50 - $7.83
Q1 2017	8,112	$47	$6.21	$4.68 - $8.65
Q4 2016	3,124	$15	$5.15	$4.35 - $5.97