AMERICAN SCIENCE & ENGR INC

CUSIP: 029429107 Class: COM

PROFUND ADVISORS LLC's Holding History (CIK: 0001129919)

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

Q4 2013
Shares 3,277 Value ($000) $236 Avg Close — Range —
Q3 2013
Shares 3,349 Value ($000) $202 Avg Close — Range —