THORATEC CORP

CUSIP: 885175307 Class: COM NEW

SECURIAN ASSET MANAGEMENT, INC's Holding History (CIK: 0001035350)

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

Q3 2015
Shares 7,589 Value ($000) $480 Avg Close — Range —
Q2 2015
Shares 7,589 Value ($000) $338 Avg Close — Range —
Q1 2015
Shares 7,689 Value ($000) $322 Avg Close — Range —
Q4 2014
Shares 7,689 Value ($000) $250 Avg Close — Range —
Q3 2014
Shares 7,932 Value ($000) $212 Avg Close — Range —
Q2 2014
Shares 7,932 Value ($000) $277 Avg Close — Range —
Q1 2014
Shares 8,132 Value ($000) $291 Avg Close — Range —
Q4 2013
Shares 8,232 Value ($000) $301 Avg Close — Range —
Q3 2013
Shares 8,558 Value ($000) $319 Avg Close — Range —
Q2 2013
Shares 8,558 Value ($000) $268 Avg Close — Range —
Q1 2013
Shares 8,658 Value ($000) $325 Avg Close — Range —
Q4 2012
Shares 8,885 Value ($000) $333 Avg Close — Range —
Q3 2012
Shares 8,885 Value ($000) $307 Avg Close — Range —
Q2 2012
Shares 8,734 Value ($000) $293 Avg Close — Range —
Q1 2012
Shares 8,834 Value ($000) $298 Avg Close — Range —
Q4 2011
Shares 9,111 Value ($000) $306 Avg Close — Range —
Q3 2011
Shares 8,921 Value ($000) $291 Avg Close — Range —