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Thoratec Corporation (THOR) Yearly Returns
     Year
  Beginning Price
  Ending Price
  Gain or Loss
  Percent Gain or Loss
1988
0.21875
0.125
-0.09375
-42.86%
1989
0.125
0.078125
-0.046875
-37.50%
1990
0.078125
0.09375
0.015625
20.00%
1991
0.09375
0.375
0.28125
300.00%
1992
0.375
1.00
0.625
166.67%
1993
1.00
1.8125
0.8125
81.25%
1994
1.8125
2.1875
0.375
20.69%
1995
2.1875
3.00
2.8125
128.57%
1996
5.00
3.1667*
-1.8333
-36.67%
1997
9.50
6.625
-2.875
-30.26%
1998
6.625
7.125
0.50
7.55%
1999
7.125
9.75
2.625
36.84%
2000
9.75
11.00
1.25
12.82%
2001
11.00
17.00
6.00
54.55%
2002
17.00
7.63
-9.37
-55.12%
2003
7.63
12.93
5.30
69.46%
2004
12.93
10.42
-2.51
-19.41%
2005
10.42
20.69
10.27
98.56%
2006
20.69
17.58
-3.11
-15.03%
2007
17.58
18.19
0.61
3.47%
2008
18.19
32.49
14.30
78.61%
2009
32.49
26.92
-5.57
-17.14%
2010
26.92
28.32
1.40
5.20%
2011
28.32
33.56
5.24
18.50%
2012
33.56
37.52
3.96
11.80%
2013
37.52
36.60
-0.92
-2.45%
2014
36.60
32.46
-4.14
-11.31%
2015
32.46
63.50
31.04
95.63%
*The 1996 ending price for Thoratec Corp. has been adjusted for a 1 for 3 reverse stock split.
*in 2015, St. Jude Medical (STJ) completed its acquisition of Thoratec Corporation (THOR) for $65 per share.
Calculations do not reflect any dividends paid or any stock spinoffs from original stock. Taxes and commissions are not factored into calculations. Data is property of 1stock1 and written permission must be granted before redistributing any data (in part or in whole).
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