INTEGRYS ENERGY GROUP INC

CUSIP: 45822P105 Class: COM

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q1 2015
Shares 218,017 Value ($000) $15,701 Avg Close — Range —
Q4 2014
Shares 218,338 Value ($000) $17,001 Avg Close — Range —
Q3 2014
Shares 218,366 Value ($000) $14,155 Avg Close — Range —
Q2 2014
Shares 218,366 Value ($000) $15,532 Avg Close — Range —
Q1 2014
Shares 208,727 Value ($000) $12,449 Avg Close — Range —
Q4 2013
Shares 203,075 Value ($000) $11,049 Avg Close — Range —
Q3 2013
Shares 200,253 Value ($000) $11,191 Avg Close — Range —
Q2 2013
Shares 175,992 Value ($000) $10,301 Avg Close — Range —