VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

RHUMBLINE ADVISERS's Holding History (CIK: 0001115418)

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

Q4 2014
Shares 41,848 Value ($000) $748 Avg Close — Range —
Q3 2014
Shares 43,998 Value ($000) $468 Avg Close — Range —
Q2 2014
Shares 48,298 Value ($000) $851 Avg Close — Range —
Q1 2014
Shares 52,791 Value ($000) $1,041 Avg Close — Range —
Q4 2013
Shares 55,841 Value ($000) $1,220 Avg Close — Range —
Q3 2013
Shares 59,931 Value ($000) $1,434 Avg Close — Range —
Q2 2013
Shares 56,489 Value ($000) $1,024 Avg Close — Range —