THORATEC CORP

CUSIP: 885175307 Class: COM NEW

Magnetar Financial LLC's Holding History (CIK: 0001352851)

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

Q3 2015
Shares 931,755 Value ($000) $58,943 Avg Close — Range —
Q2 2013
Shares 25,266 Value ($000) $791 Avg Close — Range —