AMERICAN SCIENCE & ENGR INC

CUSIP: 029429107 Class: COM

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

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

Q4 2015
Shares 282 Value ($000) $12 Avg Close — Range —
Q3 2015
Shares 312 Value ($000) $11 Avg Close — Range —
Q2 2015
Shares 3,907 Value ($000) $171 Avg Close — Range —
Q4 2014
Shares 364 Value ($000) $19 Avg Close — Range —
Q3 2014
Shares 305 Value ($000) $17 Avg Close — Range —
Q2 2014
Shares 50 Value ($000) $3 Avg Close — Range —
Q4 2013
Shares 715 Value ($000) $51 Avg Close — Range —