GSI GROUP INC CDA NEW

CUSIP: 36191C205 Class: CMN

Walleye Trading LLC's Holding History (CIK: 0001388391)

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

Q4 2015
Shares 3,800 Value ($000) $52 Avg Close — Range —
Q3 2015
Shares 2,200 Value ($000) $28 Avg Close — Range —
Q2 2015
Shares 100 Value ($000) $2 Avg Close — Range —