THORATEC CORP

CUSIP: 885175307 Class: COM NEW

Swiss National Bank's Holding History (CIK: 0001582202)

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

Q3 2015
Shares 76,100 Value ($000) $4,814 Avg Close — Range —
Q2 2015
Shares 63,900 Value ($000) $2,848 Avg Close — Range —
Q1 2015
Shares 63,900 Value ($000) $2,677 Avg Close — Range —
Q4 2014
Shares 63,900 Value ($000) $2,074 Avg Close — Range —
Q3 2014
Shares 62,900 Value ($000) $1,681 Avg Close — Range —
Q2 2014
Shares 64,400 Value ($000) $2,245 Avg Close — Range —
Q1 2014
Shares 64,400 Value ($000) $2,306 Avg Close — Range —
Q4 2013
Shares 50,700 Value ($000) $1,856 Avg Close — Range —
Q3 2013
Shares 50,300 Value ($000) $1,876 Avg Close — Range —
Q2 2013
Shares 53,200 Value ($000) $1,666 Avg Close — Range —