HYPERDYNAMICS CORP

CUSIP: 448954107 Class: COM

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

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

Q3 2013
Shares 10,323 Value ($000) $46 Avg Close — Range —
Q2 2013
Shares 37,350 Value ($000) $18 Avg Close — Range —