QUESTAR CORP

CUSIP: 748356102 Class: COM

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

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

Q4 2014
Shares 481 Value ($000) $12 Avg Close — Range —
Q3 2013
Shares 15,543 Value ($000) $350 Avg Close — Range —