QUESTAR CORP

CUSIP: 748356102 Class: COM

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q1 2015
Shares 121 Value ($000) $3 Avg Close — Range —
Q4 2014
Shares 6,773 Value ($000) $171 Avg Close — Range —
Q3 2014
Shares 18,051 Value ($000) $402 Avg Close — Range —
Q1 2014
Shares 485 Value ($000) $12 Avg Close — Range —
Q4 2013
Shares 2,811 Value ($000) $65 Avg Close — Range —
Q2 2013
Shares 3,886 Value ($000) $93 Avg Close — Range —