Q1  2017 |
≡ |
Chuck Akre - Akre Capital Management |
Add 21.87% |
1,019,167 |
1.90 |
Q4  2016 |
≡ |
Lee Ainslie - Maverick Capital |
Add 15.14% |
860 |
0.00 |
≡ |
Chris Hohn - TCI Fund Management |
Reduce 89.80% |
91,811 |
0.09 |
≡ |
Chuck Akre - Akre Capital Management |
Add 15.37% |
620,770 |
1.09 |
Q3  2016 |
≡ |
Lee Ainslie - Maverick Capital |
Reduce 9.70% |
610 |
0.00 |
≡ |
Chuck Akre - Akre Capital Management |
Reduce 0.02% |
863 |
0.00 |
Q2  2016 |
≡ |
Lee Ainslie - Maverick Capital |
Add 13.74% |
760 |
0.00 |
≡ |
Chuck Akre - Akre Capital Management |
Add 0.58% |
23,408 |
0.05 |
Q1  2016 |
≡ |
Lee Ainslie - Maverick Capital |
Add 127.57% |
3,100 |
0.01 |
≡ |
Chuck Akre - Akre Capital Management |
Add 9.78% |
357,910 |
0.74 |
≡ |
Guy Spier - Aquamarine Capital |
Buy |
25,000 |
2.05 |
≡ |
Chris Hohn - TCI Fund Management |
Reduce 96.67% |
2,965,316 |
5.22 |
Q4  2015 |
≡ |
Chuck Akre - Akre Capital Management |
Add 1.49% |
53,819 |
0.12 |
Q3  2015 |
≡ |
Thomas Gayner - Markel Group |
Add 4.32% |
12,000 |
0.03 |
≡ |
Chuck Akre - Akre Capital Management |
Add 1.19% |
42,489 |
0.10 |
Q2  2015 |
≡ |
Lee Ainslie - Maverick Capital |
Reduce 6.90% |
180 |
0.00 |
≡ |
Chuck Akre - Akre Capital Management |
Add 0.24% |
8,646 |
0.02 |
≡ |
Thomas Gayner - Markel Group |
Add 4.12% |
11,000 |
0.03 |
Q1  2015 |
≡ |
Lee Ainslie - Maverick Capital |
Buy |
2,610 |
0.00 |
≡ |
Thomas Gayner - Markel Group |
Add 5.12% |
13,000 |
0.03 |
≡ |
Chuck Akre - Akre Capital Management |
Add 1.00% |
35,305 |
0.10 |
Q4  2014 |
≡ |
Thomas Gayner - Markel Group |
Add 4.96% |
12,000 |
0.03 |
≡ |
Chuck Akre - Akre Capital Management |
Add 1.11% |
38,635 |
0.10 |
Q3  2014 |
≡ |
Chuck Akre - Akre Capital Management |
Reduce 0.05% |
1,585 |
0.00 |
≡ |
Thomas Gayner - Markel Group |
Add 6.61% |
15,000 |
0.04 |
Q2  2014 |
≡ |
Thomas Gayner - Markel Group |
Add 9.66% |
20,000 |
0.05 |
Q1  2014 |
≡ |
Chuck Akre - Akre Capital Management |
Add 0.03% |
1,180 |
0.00 |
≡ |
Thomas Gayner - Markel Group |
Add 16.69% |
29,600 |
0.07 |
Q4  2013 |
≡ |
Chuck Akre - Akre Capital Management |
Reduce 0.02% |
570 |
0.00 |
≡ |
Warren Buffett - Berkshire Hathaway |
Reduce 1.01% |
252,400 |
0.02 |
≡ |
Thomas Gayner - Markel Group |
Add 14.16% |
22,000 |
0.05 |
Q3  2013 |
≡ |
Chuck Akre - Akre Capital Management |
Add 0.11% |
3,755 |
0.01 |
Q2  2013 |
≡ |
Warren Buffett - Berkshire Hathaway |
Reduce 12.29% |
3,493,072 |
0.23 |
≡ |
Chuck Akre - Akre Capital Management |
Add 37.01% |
939,390 |
2.59 |
Q1  2013 |
≡ |
Thomas Gayner - Markel Group |
Add 62.89% |
60,000 |
0.12 |
≡ |
Chuck Akre - Akre Capital Management |
Add 14.49% |
321,321 |
0.97 |
≡ |
ValueAct Capital |
Sell 100.00% |
15,034,073 |
9.63 |
Q4  2012 |
≡ |
Thomas Gayner - Markel Group |
Add 218.00% |
65,400 |
0.14 |
≡ |
ValueAct Capital |
Reduce 13.28% |
2,301,500 |
1.47 |
≡ |
Chuck Akre - Akre Capital Management |
Add 22.64% |
409,319 |
1.47 |
Q3  2012 |
≡ |
Chuck Akre - Akre Capital Management |
Add 0.41% |
7,335 |
0.03 |
≡ |
Thomas Gayner - Markel Group |
Buy |
30,000 |
0.06 |
≡ |
ValueAct Capital |
Add 1.94% |
329,514 |
0.21 |
Q2  2012 |
≡ |
ValueAct Capital |
Add 2.59% |
428,818 |
0.23 |
≡ |
Chuck Akre - Akre Capital Management |
Add 80.04% |
800,400 |
2.36 |
Q1  2012 |
≡ |
Chuck Akre - Akre Capital Management |
Buy |
1,000,000 |
4.39 |
Q4  2010 |
≡ |
Warren Buffett - Berkshire Hathaway |
Reduce 1.59% |
458,506 |
0.02 |
Q3  2010 |
≡ |
Warren Buffett - Berkshire Hathaway |
Reduce 6.20% |
1,910,120 |
0.10 |
Q1  2010 |
≡ |
Warren Buffett - Berkshire Hathaway |
Reduce 3.24% |
1,030,734 |
0.06 |
Q4  2009 |
≡ |
Warren Buffett - Berkshire Hathaway |
Reduce 18.88% |
7,404,702 |
0.34 |
Q3  2009 |
≡ |
Warren Buffett - Berkshire Hathaway |
Reduce 18.29% |
8,780,688 |
0.32 |
Q2  2008 |
≡ |
Robert Olstein - Olstein Capital Management |
Sell 100.00% |
346,100 |
1.09 |
≡ |
John Rogers - Ariel Appreciation Fund |
Sell 100.00% |
1,276,800 |
2.46 |
Q1  2008 |
≡ |
John Rogers - Ariel Appreciation Fund |
Reduce 5.61% |
75,900 |
0.15 |
≡ |
Robert Olstein - Olstein Capital Management |
Add 78.59% |
152,300 |
0.48 |
Q4  2007 |
≡ |
Robert Olstein - Olstein Capital Management |
Buy |
193,800 |
0.49 |
≡ |
John Rogers - Ariel Appreciation Fund |
Add 106.46% |
697,500 |
1.18 |
Q3  2007 |
≡ |
John Rogers - Ariel Appreciation Fund |
Buy |
655,200 |
1.35 |