AMTECH SYS INC

Ticker: ASYS CUSIP: 032332504 Class: COM PAR $0.01N

Walleye Trading LLC's Holding History (CIK: 0001388391)

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

Q1 2017

Shares 2,700 Value ($000) $15 Avg Close $5.48 Range $3.99 - $6.69

Q1 2016

Shares 1,600 Value ($000) $10 Avg Close $5.64 Range $4.41 - $7.83

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	2,700	$15	$5.48	$3.99 - $6.69
Q1 2016	1,600	$10	$5.64	$4.41 - $7.83