WISCONSIN ENERGY CORP

CUSIP: 976657106 Class: COM

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q1 2015
Shares 426,194 Value ($000) $21,097 Avg Close — Range —
Q4 2014
Shares 433,462 Value ($000) $22,861 Avg Close — Range —
Q3 2014
Shares 429,423 Value ($000) $18,465 Avg Close — Range —
Q2 2014
Shares 413,982 Value ($000) $19,424 Avg Close — Range —
Q1 2014
Shares 416,082 Value ($000) $19,369 Avg Close — Range —
Q4 2013
Shares 414,082 Value ($000) $17,118 Avg Close — Range —
Q3 2013
Shares 411,282 Value ($000) $16,608 Avg Close — Range —
Q2 2013
Shares 398,567 Value ($000) $16,337 Avg Close — Range —
Q1 2013
Shares 400,632 Value ($000) $17,183 Avg Close — Range —