VOLTERRA SEMICONDUCTOR CORP

CUSIP: 928708106 Class: COM

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q3 2013
Shares 14,610 Value ($000) $336 Avg Close — Range —
Q2 2013
Shares 388,680 Value ($000) $5,488 Avg Close — Range —