ON ASSIGNMENT INC

CUSIP: 682159108 Class: COM

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

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

Q1 2018
Shares 71,804 Value ($000) $5,878 Avg Close — Range —
Q4 2017
Shares 2,215,978 Value ($000) $142,421 Avg Close — Range —
Q3 2017
Shares 2,289,907 Value ($000) $122,922 Avg Close — Range —
Q2 2017
Shares 2,240,588 Value ($000) $121,328 Avg Close — Range —
Q1 2017
Shares 2,229,643 Value ($000) $108,203 Avg Close — Range —
Q4 2016
Shares 2,113,259 Value ($000) $93,322 Avg Close — Range —
Q3 2016
Shares 2,005,196 Value ($000) $72,768 Avg Close — Range —
Q2 2016
Shares 1,957,808 Value ($000) $72,339 Avg Close — Range —
Q1 2016
Shares 1,915,141 Value ($000) $70,706 Avg Close — Range —
Q4 2015
Shares 1,810,571 Value ($000) $81,386 Avg Close — Range —
Q3 2015
Shares 1,769,606 Value ($000) $65,298 Avg Close — Range —
Q2 2015
Shares 1,716,373 Value ($000) $67,419 Avg Close — Range —
Q1 2015
Shares 1,603,068 Value ($000) $61,510 Avg Close — Range —
Q4 2014
Shares 1,469,531 Value ($000) $48,775 Avg Close — Range —
Q3 2014
Shares 1,499,824 Value ($000) $40,271 Avg Close — Range —
Q2 2014
Shares 1,444,599 Value ($000) $51,385 Avg Close — Range —
Q1 2014
Shares 1,441,366 Value ($000) $55,618 Avg Close — Range —
Q4 2013
Shares 1,623,837 Value ($000) $56,703 Avg Close — Range —
Q3 2013
Shares 1,657,856 Value ($000) $54,709 Avg Close — Range —
Q2 2013
Shares 1,761,922 Value ($000) $47,079 Avg Close — Range —