WILLIAMS CLAYTON ENERGY INC

CUSIP: 969490101 Class: CMN

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

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

Q1 2017
Shares 451,961 Value ($000) $59,695 Avg Close — Range —
Q4 2016
Shares 399,499 Value ($000) $47,645 Avg Close — Range —
Q3 2016
Shares 331,523 Value ($000) $28,326 Avg Close — Range —
Q2 2016
Shares 405,728 Value ($000) $11,142 Avg Close — Range —
Q1 2016
Shares 505,140 Value ($000) $4,506 Avg Close — Range —
Q4 2015
Shares 462,850 Value ($000) $13,686 Avg Close — Range —
Q3 2015
Shares 439,786 Value ($000) $17,069 Avg Close — Range —
Q2 2015
Shares 433,511 Value ($000) $28,503 Avg Close — Range —
Q1 2015
Shares 464,138 Value ($000) $23,499 Avg Close — Range —
Q4 2014
Shares 457,784 Value ($000) $29,207 Avg Close — Range —
Q3 2014
Shares 477,179 Value ($000) $46,024 Avg Close — Range —
Q2 2014
Shares 455,392 Value ($000) $62,557 Avg Close — Range —
Q1 2014
Shares 384,756 Value ($000) $43,481 Avg Close — Range —
Q4 2013
Shares 350,921 Value ($000) $28,758 Avg Close — Range —
Q3 2013
Shares 341,452 Value ($000) $17,916 Avg Close — Range —
Q2 2013
Shares 339,484 Value ($000) $14,767 Avg Close — Range —