AMERICAN SCIENCE & ENGR INC

CUSIP: 029429107 Class: COM

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q2 2016
Shares 261,928 Value ($000) $9,799 Avg Close — Range —
Q1 2016
Shares 259,542 Value ($000) $7,187 Avg Close — Range —
Q4 2015
Shares 242,726 Value ($000) $10,044 Avg Close — Range —
Q3 2015
Shares 248,338 Value ($000) $8,831 Avg Close — Range —
Q2 2015
Shares 236,816 Value ($000) $10,375 Avg Close — Range —
Q1 2015
Shares 227,226 Value ($000) $11,103 Avg Close — Range —
Q4 2014
Shares 226,391 Value ($000) $11,750 Avg Close — Range —
Q3 2014
Shares 243,940 Value ($000) $13,510 Avg Close — Range —
Q2 2014
Shares 234,845 Value ($000) $16,343 Avg Close — Range —
Q1 2014
Shares 223,537 Value ($000) $15,015 Avg Close — Range —
Q4 2013
Shares 220,126 Value ($000) $15,829 Avg Close — Range —
Q3 2013
Shares 222,764 Value ($000) $13,435 Avg Close — Range —
Q2 2013
Shares 224,415 Value ($000) $12,567 Avg Close — Range —