WILLIAMS CLAYTON ENERGY INC

CUSIP: 969490101 Class: CMN

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q1 2017
Shares 29,715 Value ($000) $3,925 Avg Close — Range —
Q4 2016
Shares 25,026 Value ($000) $2,985 Avg Close — Range —
Q3 2016
Shares 23,676 Value ($000) $2,023 Avg Close — Range —
Q2 2016
Shares 20,224 Value ($000) $556 Avg Close — Range —
Q1 2016
Shares 19,930 Value ($000) $178 Avg Close — Range —
Q4 2015
Shares 19,573 Value ($000) $579 Avg Close — Range —
Q3 2015
Shares 19,118 Value ($000) $742 Avg Close — Range —
Q2 2015
Shares 17,976 Value ($000) $1,182 Avg Close — Range —
Q1 2015
Shares 39,114 Value ($000) $1,981 Avg Close — Range —
Q4 2014
Shares 38,418 Value ($000) $2,452 Avg Close — Range —
Q3 2014
Shares 38,052 Value ($000) $3,671 Avg Close — Range —
Q2 2014
Shares 37,746 Value ($000) $5,186 Avg Close — Range —
Q1 2014
Shares 39,142 Value ($000) $4,424 Avg Close — Range —
Q4 2013
Shares 28,212 Value ($000) $2,312 Avg Close — Range —
Q3 2013
Shares 19,580 Value ($000) $1,035 Avg Close — Range —
Q2 2013
Shares 14,138 Value ($000) $620 Avg Close — Range —