THORATEC CORP

CUSIP: 885175307 Class: COM NEW

ProShare Advisors LLC's Holding History (CIK: 0001357955)

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

Q3 2015
Shares 11,591 Value ($000) $733 Avg Close — Range —
Q2 2015
Shares 16,615 Value ($000) $741 Avg Close — Range —
Q1 2015
Shares 20,454 Value ($000) $857 Avg Close — Range —
Q4 2014
Shares 23,601 Value ($000) $766 Avg Close — Range —
Q3 2014
Shares 52,821 Value ($000) $1,412 Avg Close — Range —
Q2 2014
Shares 55,091 Value ($000) $1,920 Avg Close — Range —
Q1 2014
Shares 65,364 Value ($000) $2,341 Avg Close — Range —
Q4 2013
Shares 46,754 Value ($000) $1,711 Avg Close — Range —
Q3 2013
Shares 42,670 Value ($000) $1,591 Avg Close — Range —