VOLTERRA SEMICONDUCTOR CORP

CUSIP: 928708106 Class: COM

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

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

Q3 2013
Shares 63,232 Value ($000) $1,453 Avg Close — Range —
Q2 2013
Shares 57,395 Value ($000) $824 Avg Close — Range —