ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

PANAGORA ASSET MANAGEMENT INC's Holding History (CIK: 0000883677)

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

Q4 2019
Shares 32,954 Value ($000) $286 Avg Close — Range —
Q3 2019
Shares 65,470 Value ($000) $597 Avg Close — Range —
Q2 2019
Shares 65,470 Value ($000) $527 Avg Close — Range —
Q1 2019
Shares 65,470 Value ($000) $945 Avg Close — Range —
Q4 2018
Shares 65,470 Value ($000) $339 Avg Close — Range —
Q3 2018
Shares 50,324 Value ($000) $783 Avg Close — Range —
Q2 2018
Shares 136,652 Value ($000) $3,321 Avg Close — Range —
Q2 2016
Shares 5,852 Value ($000) $36 Avg Close — Range —
Q1 2016
Shares 44,948 Value ($000) $363 Avg Close — Range —
Q4 2015
Shares 1,940,665 Value ($000) $976 Avg Close — Range —