CORE MARK HOLDING CO INC

CUSIP: 218681104 Class: COMMON STOCK

Walleye Trading LLC's Holding History (CIK: 0001388391)

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

Q2 2017
Shares 3 Value ($000) $0 Avg Close — Range —
Q3 2016
Shares 119 Value ($000) $4 Avg Close — Range —
Q2 2016
Shares 2,472 Value ($000) $116 Avg Close — Range —
Q4 2015
Shares 2,016 Value ($000) $165 Avg Close — Range —