WISCONSIN ENERGY CORP

CUSIP: 976657106 Class: COM

NISA INVESTMENT ADVISORS, LLC's Holding History (CIK: 0000937615)

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

Q1 2015
Shares 265,010 Value ($000) $13,118 Avg Close — Range —
Q4 2014
Shares 265,710 Value ($000) $14,014 Avg Close — Range —
Q3 2014
Shares 269,310 Value ($000) $11,580 Avg Close — Range —
Q2 2014
Shares 260,610 Value ($000) $12,228 Avg Close — Range —
Q1 2014
Shares 263,010 Value ($000) $12,243 Avg Close — Range —
Q4 2013
Shares 256,410 Value ($000) $10,600 Avg Close — Range —
Q3 2013
Shares 246,410 Value ($000) $9,950 Avg Close — Range —
Q2 2013
Shares 247,210 Value ($000) $10,133 Avg Close — Range —