VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q4 2014
Shares 6,613 Value ($000) $118 Avg Close — Range —
Q3 2014
Shares 622,348 Value ($000) $6,622 Avg Close — Range —
Q2 2014
Shares 239,562 Value ($000) $4,218 Avg Close — Range —
Q1 2014
Shares 11,880 Value ($000) $234 Avg Close — Range —
Q4 2013
Shares 12,965 Value ($000) $284 Avg Close — Range —
Q3 2013
Shares 1,094,067 Value ($000) $26,170 Avg Close — Range —
Q2 2013
Shares 1,098,321 Value ($000) $19,913 Avg Close — Range —