DDR CORP

CUSIP: 23317H102 Class: COM

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2017
Shares 20,844 Value ($000) $187 Avg Close — Range —
Q3 2017
Shares 54,917 Value ($000) $503 Avg Close — Range —
Q2 2017
Shares 31,849 Value ($000) $289 Avg Close — Range —
Q1 2017
Shares 1,900 Value ($000) $24 Avg Close — Range —
Q2 2014
Shares 1,644 Value ($000) $29 Avg Close — Range —
Q1 2014
Shares 2,589 Value ($000) $43 Avg Close — Range —
Q2 2013
Shares 3,870 Value ($000) $64 Avg Close — Range —