PIONEER NAT RES CO

CUSIP: 723787107 Class: COM

VIKING GLOBAL INVESTORS LP's Holding History (CIK: 0001103804)

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

Q4 2017
Shares 104,166 Value ($000) $18,005 Avg Close — Range —
Q2 2016
Shares 1,368,586 Value ($000) $206,944 Avg Close — Range —
Q1 2016
Shares 2,555,168 Value ($000) $359,614 Avg Close — Range —
Q4 2015
Shares 9,371,105 Value ($000) $1,174,949 Avg Close — Range —
Q3 2015
Shares 6,663,287 Value ($000) $810,522 Avg Close — Range —
Q2 2015
Shares 6,391,252 Value ($000) $886,403 Avg Close — Range —
Q1 2015
Shares 5,809,207 Value ($000) $949,863 Avg Close — Range —
Q4 2014
Shares 6,586,936 Value ($000) $980,465 Avg Close — Range —
Q3 2014
Shares 6,783,641 Value ($000) $1,336,174 Avg Close — Range —
Q2 2014
Shares 4,072,836 Value ($000) $935,978 Avg Close — Range —
Q1 2014
Shares 1,637,536 Value ($000) $306,448 Avg Close — Range —