PIONEER NAT RES CO

CUSIP: 723787107 Class: COM

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q4 2019
Shares 503,034 Value ($000) $76,144 Avg Close — Range —
Q3 2019
Shares 448,224 Value ($000) $56,373 Avg Close — Range —
Q2 2019
Shares 495,128 Value ($000) $76,180 Avg Close — Range —
Q1 2019
Shares 496,846 Value ($000) $75,660 Avg Close — Range —
Q4 2018
Shares 524,037 Value ($000) $68,921 Avg Close — Range —
Q3 2018
Shares 517,567 Value ($000) $90,155 Avg Close — Range —
Q2 2018
Shares 438,120 Value ($000) $82,910 Avg Close — Range —
Q1 2018
Shares 255,880 Value ($000) $43,955 Avg Close — Range —
Q4 2017
Shares 264,160 Value ($000) $45,660 Avg Close — Range —
Q3 2017
Shares 245,495 Value ($000) $36,220 Avg Close — Range —
Q2 2015
Shares 151,268 Value ($000) $20,979 Avg Close — Range —
Q1 2015
Shares 133,073 Value ($000) $21,759 Avg Close — Range —