ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

STEVENS CAPITAL MANAGEMENT LP's Holding History (CIK: 0001134813)

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

Q2 2015
Shares 73,712 Value ($000) $79 Avg Close — Range —
Q1 2015
Shares 54,385 Value ($000) $118 Avg Close — Range —
Q4 2014
Shares 16,002 Value ($000) $44 Avg Close — Range —
Q3 2014
Shares 46,783 Value ($000) $131 Avg Close — Range —
Q2 2014
Shares 23,009 Value ($000) $97 Avg Close — Range —
Q1 2014
Shares 28,441 Value ($000) $120 Avg Close — Range —