OCZ TECHNOLOGY GROUP INC

CUSIP: 67086E303 Class: COMMON STOCK

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2013
Shares 495,583 Value ($000) $18 Avg Close — Range —
Q3 2013
Shares 372,321 Value ($000) $484 Avg Close — Range —
Q2 2013
Shares 301,731 Value ($000) $438 Avg Close — Range —