| Q1  2026 |
| ≡ |
Mairs & Power Funds |
Reduce 0.03% |
5 |
0.00 |
| ≡ |
Dodge & Cox Funds |
Reduce 1.79% |
730 |
0.00 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Reduce 18.18% |
100 |
0.00 |
| ≡ |
Bill Nygren - Oakmark Funds |
Reduce 23.59% |
568 |
0.00 |
| Q4  2025 |
| ≡ |
Dodge & Cox Funds |
Reduce 0.17% |
70 |
0.00 |
| ≡ |
Mairs & Power Funds |
Reduce 1.36% |
255 |
0.00 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Reduce 21.43% |
150 |
0.00 |
| Q3  2025 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Buy |
700 |
0.00 |
| ≡ |
Dodge & Cox Funds |
Reduce 2.69% |
1,127 |
0.00 |
| ≡ |
Mairs & Power Funds |
Reduce 3.36% |
651 |
0.00 |
| ≡ |
Bill Nygren - Oakmark Funds |
Reduce 9.41% |
250 |
0.00 |
| ≡ |
Bill & Melinda Gates Foundation Trust |
Reduce 13.60% |
1,000,000 |
1.30 |
| Q2  2025 |
| ≡ |
Bill Nygren - Oakmark Funds |
Add 41.38% |
778 |
0.00 |
| ≡ |
Mairs & Power Funds |
Add 16.96% |
2,808 |
0.01 |
| ≡ |
Thomas Gayner - Markel Group |
Add 0.18% |
600 |
0.00 |
| ≡ |
Dodge & Cox Funds |
Reduce 0.07% |
30 |
0.00 |
| Q1  2025 |
| ≡ |
Thomas Gayner - Markel Group |
Add 1.00% |
3,250 |
0.01 |
| ≡ |
Dodge & Cox Funds |
Reduce 0.06% |
25 |
0.00 |
| ≡ |
Mairs & Power Funds |
Reduce 0.84% |
140 |
0.00 |
| ≡ |
Bill Nygren - Oakmark Funds |
Reduce 2.08% |
40 |
0.00 |
| Q4  2024 |
| ≡ |
Bill Nygren - Oakmark Funds |
Add 6.67% |
120 |
0.00 |
| ≡ |
Thomas Gayner - Markel Group |
Add 1.90% |
6,050 |
0.02 |
| ≡ |
Mairs & Power Funds |
Add 0.69% |
115 |
0.00 |
| ≡ |
Dodge & Cox Funds |
Reduce 0.71% |
300 |
0.00 |
| Q3  2024 |
| ≡ |
Thomas Gayner - Markel Group |
Add 2.33% |
7,250 |
0.03 |
| ≡ |
Mairs & Power Funds |
Reduce 2.98% |
510 |
0.00 |
| Q2  2024 |
| ≡ |
Thomas Gayner - Markel Group |
Add 1.27% |
3,900 |
0.01 |
| ≡ |
Dodge & Cox Funds |
Reduce 0.12% |
50 |
0.00 |
| ≡ |
Mairs & Power Funds |
Reduce 1.99% |
347 |
0.00 |
| ≡ |
Lee Ainslie - Maverick Capital |
Sell 100.00% |
3,425 |
0.02 |
| Q1  2024 |
| ≡ |
Thomas Gayner - Markel Group |
Add 1.48% |
4,500 |
0.02 |
| ≡ |
Lee Ainslie - Maverick Capital |
Buy |
3,425 |
0.02 |
| Q4  2023 |
| ≡ |
Thomas Gayner - Markel Group |
Add 1.34% |
4,000 |
0.01 |
| Q3  2023 |
| ≡ |
Thomas Gayner - Markel Group |
Add 2.08% |
6,100 |
0.02 |
| ≡ |
Lee Ainslie - Maverick Capital |
Sell 100.00% |
4,148 |
0.02 |
| Q2  2023 |
| ≡ |
Thomas Gayner - Markel Group |
Add 1.91% |
5,500 |
0.02 |
| ≡ |
Lee Ainslie - Maverick Capital |
Buy |
4,148 |
0.02 |
| Q2  2022 |
| ≡ |
First Eagle Investment Management |
Sell 100.00% |
426 |
0.00 |
| Q1  2022 |
| ≡ |
First Eagle Investment Management |
Add 18.33% |
66 |
0.00 |
| ≡ |
Bill & Melinda Gates Foundation Trust |
Reduce 24.07% |
2,331,518 |
2.63 |
| Q4  2021 |
| ≡ |
First Eagle Investment Management |
Buy |
360 |
0.00 |
| ≡ |
Lee Ainslie - Maverick Capital |
Sell 100.00% |
1,175 |
0.00 |
| Q3  2021 |
| ≡ |
Bill & Melinda Gates Foundation Trust |
Reduce 4.64% |
471,624 |
0.39 |
| ≡ |
Lee Ainslie - Maverick Capital |
Reduce 87.92% |
8,555 |
0.00 |
| Q2  2021 |
| ≡ |
Lee Ainslie - Maverick Capital |
Buy |
9,730 |
0.02 |
| Q1  2021 |
| ≡ |
Bill & Melinda Gates Foundation Trust |
Reduce 9.80% |
1,104,101 |
1.22 |
| ≡ |
Lee Ainslie - Maverick Capital |
Sell 100.00% |
5,649 |
0.02 |
| Q4  2020 |
| ≡ |
Lee Ainslie - Maverick Capital |
Add 827.59% |
5,040 |
0.02 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Sell 100.00% |
28,000 |
0.76 |
| Q3  2020 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Reduce 24.32% |
9,000 |
0.24 |
| ≡ |
Lee Ainslie - Maverick Capital |
Reduce 91.63% |
6,663 |
0.00 |
| Q2  2020 |
| ≡ |
Lee Ainslie - Maverick Capital |
Buy |
7,272 |
0.02 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Reduce 15.91% |
7,000 |
0.16 |
| Q1  2020 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Add 15.79% |
6,000 |
0.15 |
| ≡ |
Thomas Gayner - Markel Group |
Add 1.23% |
3,500 |
0.01 |
| Q4  2019 |
| ≡ |
Thomas Gayner - Markel Group |
Add 2.16% |
6,000 |
0.01 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Reduce 11.63% |
5,000 |
0.11 |
| Q3  2019 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Add 19.44% |
7,000 |
0.14 |
| Q2  2019 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Reduce 5.26% |
2,000 |
0.04 |
| Q4  2018 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Add 35.71% |
10,000 |
0.21 |
| Q3  2018 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Add 12.00% |
3,000 |
0.06 |
| Q2  2018 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Add 78.57% |
11,000 |
0.20 |
| Q1  2018 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Reduce 36.36% |
8,000 |
0.15 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Sell 100.00% |
650 |
0.00 |
| Q4  2017 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Buy |
650 |
0.00 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Reduce 55.56% |
27,500 |
0.55 |
| Q3  2017 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Reduce 10.81% |
6,000 |
0.10 |
| Q1  2017 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Add 18.09% |
8,500 |
0.10 |
| Q4  2016 |
| ≡ |
David Katz - Matrix Asset Advisors |
Sell 100.00% |
18,100 |
2.76 |
| Q3  2016 |
| ≡ |
Robert Olstein - Olstein Capital Management |
Buy |
47,000 |
0.68 |
| ≡ |
David Katz - Matrix Asset Advisors |
Reduce 7.18% |
1,400 |
0.21 |
| Q2  2016 |
| ≡ |
David Katz - Matrix Asset Advisors |
Reduce 3.47% |
700 |
0.10 |
| Q1  2016 |
| ≡ |
David Katz - Matrix Asset Advisors |
Reduce 13.68% |
3,200 |
0.43 |
| Q3  2015 |
| ≡ |
Thomas Gayner - Markel Group |
Add 15.35% |
37,000 |
0.06 |
| ≡ |
David Katz - Matrix Asset Advisors |
Add 3.54% |
800 |
0.08 |
| Q1  2015 |
| ≡ |
David Katz - Matrix Asset Advisors |
Add 38.65% |
6,300 |
0.68 |
| Q4  2014 |
| ≡ |
David Katz - Matrix Asset Advisors |
Reduce 2.98% |
500 |
0.06 |
| Q3  2014 |
| ≡ |
David Katz - Matrix Asset Advisors |
Reduce 14.29% |
2,800 |
0.37 |
| Q2  2014 |
| ≡ |
David Katz - Matrix Asset Advisors |
Reduce 15.52% |
3,600 |
0.48 |
| Q1  2014 |
| ≡ |
Thomas Gayner - Markel Group |
Reduce 0.41% |
1,000 |
0.00 |
| Q4  2013 |
| ≡ |
David Katz - Matrix Asset Advisors |
Add 21.47% |
4,100 |
0.48 |
| ≡ |
Bill & Melinda Gates Foundation Trust |
Add 4.65% |
500,000 |
0.23 |
| ≡ |
Thomas Gayner - Markel Group |
Reduce 0.08% |
200 |
0.00 |
| Q3  2013 |
| ≡ |
David Katz - Matrix Asset Advisors |
Add 66.09% |
7,600 |
0.90 |
| ≡ |
Thomas Gayner - Markel Group |
Reduce 1.22% |
3,000 |
0.01 |
| Q2  2013 |
| ≡ |
Bill & Melinda Gates Foundation Trust |
Add 4.87% |
500,000 |
0.23 |
| ≡ |
David Katz - Matrix Asset Advisors |
Buy |
11,500 |
1.58 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Sell 100.00% |
775 |
0.00 |
| Q1  2013 |
| ≡ |
Thomas Gayner - Markel Group |
Reduce 0.33% |
800 |
0.00 |
| Q4  2012 |
| ≡ |
Thomas Gayner - Markel Group |
Reduce 0.08% |
200 |
0.00 |
| Q3  2012 |
| ≡ |
Bill & Melinda Gates Foundation Trust |
Add 1.69% |
170,457 |
0.08 |
| ≡ |
Thomas Gayner - Markel Group |
Reduce 0.18% |
434 |
0.00 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Reduce 1.90% |
15 |
0.00 |
| Q2  2012 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Add 1.94% |
15 |
0.00 |
| ≡ |
Thomas Gayner - Markel Group |
Add 1.23% |
3,000 |
0.01 |
| Q1  2012 |
| ≡ |
Thomas Gayner - Markel Group |
Reduce 1.26% |
3,100 |
0.02 |
| Q4  2011 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Add 181.82% |
500 |
0.00 |
| ≡ |
Thomas Gayner - Markel Group |
Reduce 0.20% |
500 |
0.00 |
| Q3  2011 |
| ≡ |
Bill & Melinda Gates Foundation Trust |
Add 5.21% |
500,000 |
0.25 |
| ≡ |
Thomas Russo - Gardner Russo & Quinn |
Buy |
275 |
0.00 |