INDEPENDENCE CONTRACT DRIL I

CUSIP: 453415309 Class: COM

RHUMBLINE ADVISERS's Holding History (CIK: 0001115418)

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

Q4 2019
Shares 72,949 Value ($000) $73 Avg Close Range
Q3 2019
Shares 72,797 Value ($000) $87 Avg Close Range
Q2 2019
Shares 66,396 Value ($000) $105 Avg Close Range
Q1 2019
Shares 57,836 Value ($000) $160 Avg Close Range
Q4 2018
Shares 48,699 Value ($000) $152 Avg Close Range
Q3 2018
Shares 31,331 Value ($000) $155 Avg Close Range
Q2 2018
Shares 32,206 Value ($000) $133 Avg Close Range
Q1 2018
Shares 30,266 Value ($000) $114 Avg Close Range
Q4 2017
Shares 32,141 Value ($000) $128 Avg Close Range
Q3 2017
Shares 37,714 Value ($000) $143 Avg Close Range
Q2 2017
Shares 36,824 Value ($000) $143 Avg Close Range
Q1 2017
Shares 29,904 Value ($000) $165 Avg Close Range
Q4 2016
Shares 28,603 Value ($000) $192 Avg Close Range
Q3 2016
Shares 25,762 Value ($000) $135 Avg Close Range
Q2 2016
Shares 25,062 Value ($000) $136 Avg Close Range
Q1 2016
Shares 20,457 Value ($000) $98 Avg Close Range
Q4 2015
Shares 18,127 Value ($000) $92 Avg Close Range
Q3 2015
Shares 17,137 Value ($000) $85 Avg Close Range
Q2 2015
Shares 15,908 Value ($000) $141 Avg Close Range