ORBITAL SCIENCES CORP

CUSIP: 685564106 Class: COM

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

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

Q4 2014
Shares 2,251,728 Value ($000) $60,550 Avg Close — Range —
Q3 2014
Shares 2,286,480 Value ($000) $63,565 Avg Close — Range —
Q2 2014
Shares 2,289,424 Value ($000) $67,653 Avg Close — Range —
Q1 2014
Shares 2,248,837 Value ($000) $62,740 Avg Close — Range —
Q4 2013
Shares 2,170,776 Value ($000) $50,579 Avg Close — Range —
Q3 2013
Shares 2,045,064 Value ($000) $43,314 Avg Close — Range —
Q2 2013
Shares 1,898,510 Value ($000) $32,977 Avg Close — Range —