AMERICAN SCIENCE & ENGR INC

CUSIP: 029429107 Class: COM

CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM's Holding History (CIK: 0000919079)

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

Q2 2016
Shares 93,768 Value ($000) $3,508 Avg Close — Range —
Q1 2016
Shares 93,468 Value ($000) $2,588 Avg Close — Range —
Q4 2015
Shares 83,468 Value ($000) $3,454 Avg Close — Range —
Q3 2015
Shares 86,300 Value ($000) $3,069 Avg Close — Range —
Q2 2015
Shares 69,500 Value ($000) $3,045 Avg Close — Range —
Q1 2015
Shares 64,900 Value ($000) $3,146 Avg Close — Range —
Q4 2014
Shares 64,900 Value ($000) $3,146 Avg Close — Range —
Q3 2014
Shares 26,800 Value ($000) $1,484 Avg Close — Range —
Q2 2014
Shares 25,400 Value ($000) $1,768 Avg Close — Range —
Q1 2014
Shares 24,800 Value ($000) $1,665 Avg Close — Range —
Q4 2013
Shares 19,000 Value ($000) $1,353 Avg Close — Range —
Q3 2013
Shares 19,351 Value ($000) $1,167 Avg Close — Range —
Q2 2013
Shares 18,151 Value ($000) $1,016 Avg Close — Range —