THORATEC CORP

CUSIP: 885175307 Class: COM NEW

STATE STREET CORP's Holding History (CIK: 0000093751)

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

Q3 2015
Shares 1,691,013 Value ($000) $106,973 Avg Close — Range —
Q2 2015
Shares 1,780,077 Value ($000) $79,335 Avg Close — Range —
Q1 2015
Shares 1,892,771 Value ($000) $79,291 Avg Close — Range —
Q4 2014
Shares 1,972,067 Value ($000) $64,011 Avg Close — Range —
Q3 2014
Shares 1,997,239 Value ($000) $53,389 Avg Close — Range —
Q2 2014
Shares 2,043,035 Value ($000) $71,219 Avg Close — Range —
Q1 2014
Shares 2,057,088 Value ($000) $73,663 Avg Close — Range —
Q4 2013
Shares 2,059,390 Value ($000) $75,374 Avg Close — Range —
Q3 2013
Shares 2,490,460 Value ($000) $92,872 Avg Close — Range —
Q2 2013
Shares 2,567,581 Value ($000) $80,386 Avg Close — Range —