QUESTAR CORP

CUSIP: 748356102 Class: COM

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q2 2016
Shares 228,407 Value ($000) $5,795 Avg Close — Range —
Q1 2016
Shares 11,055 Value ($000) $274 Avg Close — Range —
Q3 2015
Shares 79,000 Value ($000) $1,533 Avg Close — Range —