ON ASSIGNMENT INC

CUSIP: 682159108 Class: COM

Aperio Group, LLC's Holding History (CIK: 0001364615)

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

Q1 2018
Shares 14,529 Value ($000) $1,190 Avg Close — Range —
Q4 2017
Shares 13,504 Value ($000) $868 Avg Close — Range —
Q3 2017
Shares 12,018 Value ($000) $645 Avg Close — Range —
Q2 2017
Shares 12,422 Value ($000) $673 Avg Close — Range —
Q1 2017
Shares 11,288 Value ($000) $548 Avg Close — Range —
Q4 2016
Shares 11,778 Value ($000) $520 Avg Close — Range —
Q3 2016
Shares 11,150 Value ($000) $405 Avg Close — Range —
Q2 2016
Shares 11,061 Value ($000) $409 Avg Close — Range —
Q1 2016
Shares 10,883 Value ($000) $402 Avg Close — Range —
Q4 2015
Shares 9,928 Value ($000) $446 Avg Close — Range —
Q3 2015
Shares 9,119 Value ($000) $336 Avg Close — Range —
Q2 2015
Shares 8,782 Value ($000) $345 Avg Close — Range —
Q1 2015
Shares 8,625 Value ($000) $331 Avg Close — Range —