OM GROUP INC

CUSIP: 670872100 Class: COM

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q3 2015
Shares 16,122 Value ($000) $530 Avg Close — Range —
Q2 2015
Shares 17,459 Value ($000) $587 Avg Close — Range —
Q1 2015
Shares 191,339 Value ($000) $5,745 Avg Close — Range —
Q4 2014
Shares 5,881 Value ($000) $175 Avg Close — Range —
Q3 2014
Shares 8,546 Value ($000) $222 Avg Close — Range —
Q2 2014
Shares 38,940 Value ($000) $1,263 Avg Close — Range —
Q1 2014
Shares 58,452 Value ($000) $1,942 Avg Close — Range —
Q4 2013
Shares 5,139 Value ($000) $187 Avg Close — Range —
Q3 2013
Shares 3,937 Value ($000) $133 Avg Close — Range —