THORATEC CORP

CUSIP: 885175307 Class: COM NEW

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q3 2015
Shares 998,975 Value ($000) $63,195 Avg Close — Range —
Q2 2015
Shares 990,202 Value ($000) $44,133 Avg Close — Range —
Q1 2015
Shares 940,548 Value ($000) $39,399 Avg Close — Range —
Q4 2014
Shares 761,664 Value ($000) $24,724 Avg Close — Range —
Q3 2014
Shares 964,820 Value ($000) $25,791 Avg Close — Range —
Q2 2014
Shares 898,458 Value ($000) $31,320 Avg Close — Range —
Q1 2014
Shares 860,077 Value ($000) $30,798 Avg Close — Range —
Q4 2013
Shares 819,579 Value ($000) $29,996 Avg Close — Range —
Q3 2013
Shares 780,134 Value ($000) $29,090 Avg Close — Range —
Q2 2013
Shares 730,012 Value ($000) $22,856 Avg Close — Range —