DOMINION DIAMOND CORP

CUSIP: 257287102 Class: COM

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

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

Q1 2017
Shares 3,452 Value ($000) $44 Avg Close — Range —
Q1 2016
Shares 21,128 Value ($000) $234 Avg Close — Range —
Q4 2015
Shares 81,004 Value ($000) $829 Avg Close — Range —
Q3 2015
Shares 285 Value ($000) $3 Avg Close — Range —
Q2 2015
Shares 185 Value ($000) $3 Avg Close — Range —
Q1 2015
Shares 1,485 Value ($000) $25 Avg Close — Range —
Q4 2014
Shares 18,030 Value ($000) $324 Avg Close — Range —
Q3 2014
Shares 20,067 Value ($000) $286 Avg Close — Range —
Q4 2013
Shares 1,258 Value ($000) $18 Avg Close — Range —
Q2 2013
Shares 4,093 Value ($000) $58 Avg Close — Range —