DYNEGY INC NEW DEL

CUSIP: 26817R108 Class: COM

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

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

Q1 2018
Shares 2,447 Value ($000) $33 Avg Close — Range —
Q4 2017
Shares 202,061 Value ($000) $2,394 Avg Close — Range —
Q3 2017
Shares 87,141 Value ($000) $853 Avg Close — Range —
Q2 2017
Shares 163,825 Value ($000) $1,355 Avg Close — Range —
Q1 2017
Shares 90,660 Value ($000) $713 Avg Close — Range —
Q4 2016
Shares 102,148 Value ($000) $864 Avg Close — Range —
Q3 2016
Shares 85,165 Value ($000) $1,055 Avg Close — Range —
Q4 2015
Shares 19,954 Value ($000) $267 Avg Close — Range —
Q3 2015
Shares 12,794 Value ($000) $264 Avg Close — Range —
Q2 2015
Shares 5,731 Value ($000) $168 Avg Close — Range —
Q4 2014
Shares 19,257 Value ($000) $584 Avg Close — Range —
Q3 2014
Shares 25,535 Value ($000) $737 Avg Close — Range —
Q2 2014
Shares 15,013 Value ($000) $522 Avg Close — Range —
Q3 2013
Shares 13,400 Value ($000) $259 Avg Close — Range —
Q2 2013
Shares 8,500 Value ($000) $192 Avg Close — Range —