GLOBAL GEOPHYSICAL SVCS INC

CUSIP: 37946S107 Class: CMN

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q4 2013
Shares 109,900 Value ($000) $177 Avg Close — Range —
Q3 2013
Shares 24,300 Value ($000) $66 Avg Close — Range —
Q2 2013
Shares 24,300 Value ($000) $114 Avg Close — Range —