VOLTERRA SEMICONDUCTOR CORP

CUSIP: 928708106 Class: COM

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

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

Q3 2013
Shares 4,161 Value ($000) $96 Avg Close — Range —
Q2 2013
Shares 2,689 Value ($000) $38 Avg Close — Range —