State of Wisconsin Investment Board’s THORATEC CORPORATION THOR Stock Holding History

State of Wisconsin Investment Board’s Portfolio THOR Stock Details THOR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2015 Q1	–	Sell	-100,000	Closed	-$3.25M	–	1342
2014 Q4	$3.25M	Sell	100,000 -60,000	-38%	-$1.75M	0.01%	999
2014 Q3	$4.28M	Buy	+160,000	New	+$4.54M	0.02%	857
2014 Q2	–	Sell	-80,000	Closed	-$2.87M	–	1383
2014 Q1	$2.87M	Hold	80,000	–	–	0.01%	1034
2013 Q4	$2.93M	Sell	80,000 -50,000	-38%	-$1.96M	0.01%	992
2013 Q3	$4.85M	Hold	130,000	–	–	0.02%	789
2013 Q2	$4.07M	Buy	+130,000	New	+$4.36M	0.02%	831

Other funds holding THOR

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BFA

BlackRock Fund Advisors San Francisco, California $542B AUM 18.14% 1-Year Est. Return

PAI

Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return

EAM

Eagle Asset Management St Petersburg, Florida $19.6B AUM 41.58% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

BlackRock Advisors Wilmington, Delaware $98.8B AUM 39.77% 1-Year Est. Return

BIT

BlackRock Institutional Trust San Francisco, California $675B AUM 16.26% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

OIM

Oracle Investment Management Greenwich, Connecticut $168M AUM 42.86% 1-Year Est. Return

State of Wisconsin Investment Board's THOR Position: Q1 2015 in Review

State of Wisconsin Investment Board sold out of THORATEC CORPORATION (THOR) in Q1 2015, closing a stake of 100,000 shares — an estimated $3.25M sold.

State of Wisconsin Investment Board first reported a position in THOR in Q2 2013 and held it in 6 quarters. The position peaked at $4.85M in Q3 2013. 182 funds tracked by Wall St. Rank hold THOR as of Q1 2015.

State of Wisconsin Investment Board reported no remaining THORATEC CORPORATION position as of Q1 2015 after selling out during the quarter.
State of Wisconsin Investment Board sold 100,000 THORATEC CORPORATION shares in Q1 2015, an estimated $3.25M.
State of Wisconsin Investment Board first reported a position in THORATEC CORPORATION in Q2 2013 and held it in 6 quarters.
State of Wisconsin Investment Board's THORATEC CORPORATION position peaked at $4.85M in Q3 2013.
182 funds tracked by Wall St. Rank held THORATEC CORPORATION as of Q1 2015.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2015, filed 11 May 2015.