Thomas Gayner - Markel Group Inc.
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    129
Portfolio value:    $11,938,885,174
Holdings Activity Buys Sells    History
Holding/activity history for  CME Group (CME)
Period Shares % of Portfolio Activity % Change to Portfolio Reported Price Value Filing
2026   Q1 49,750 0.12 Add 8.74% <0.01 $295.35 $14,693,663 SEC
2025   Q4 45,750 0.10 Add 42.97% 0.03 $273.08 $12,493,410 SEC
2025   Q3 32,000 0.07 Add 42.22% 0.02 $270.19 $8,646,080 SEC
2025   Q2 22,500 0.05 Add 136.84% 0.03 $275.62 $6,201,450 SEC
2025   Q1 9,500 0.02 Add 216.67% 0.01 $265.29 $2,520,255 SEC
2024   Q4 3,000 0.01 Buy 0.01 $232.23 $696,690 SEC
2019   Q3 0 0.00 Sell 100.00% 0.41 SEC
2019   Q2 135,000 0.41 $194.11 $26,205,000 SEC
2019   Q1 135,000 0.38 $164.58 $22,218,000 SEC
2018   Q4 135,000 0.49 $188.13 $25,397,000 SEC
2018   Q3 135,000 0.39 $170.21 $22,978,000 SEC
2018   Q2 135,000 0.41 $163.92 $22,129,000 SEC
2018   Q1 135,000 0.42 $161.74 $21,835,000 SEC
2017   Q4 135,000 0.38 $146.05 $19,717,000 SEC
2017   Q3 135,000 0.37 $135.68 $18,317,000 SEC
2017   Q2 135,000 0.37 $125.24 $16,907,000 SEC
2017   Q1 135,000 0.37 $118.80 $16,038,000 SEC
2016   Q4 135,000 0.38 $115.35 $15,572,000 SEC
2016   Q3 135,000 0.37 Add 9.76% 0.03 $104.52 $14,110,000 SEC
2016   Q2 123,000 0.32 Add 6.03% 0.02 $97.40 $11,980,000 SEC
2016   Q1 116,000 0.30 $96.05 $11,142,000 SEC
2015   Q4 116,000 0.29 $90.60 $10,510,000 SEC
2015   Q3 116,000 0.29 Add 1.75% <0.01 $92.74 $10,758,000 SEC
2015   Q2 114,000 0.27 Add 12.87% 0.03 $93.06 $10,609,000 SEC
2015   Q1 101,000 0.25 Add 80.36% 0.11 $94.71 $9,566,000 SEC
2014   Q4 56,000 0.13 Add 24.44% 0.03 $88.64 $4,964,000 SEC
2014   Q3 45,000 0.10 Add 87.50% 0.05 $79.96 $3,598,000 SEC
2014   Q2 24,000 0.05 Buy 0.05 $70.96 $1,703,000 SEC
2010   Q1 0 0.00 Sell 100.00% 0.33 SEC
2009   Q4 13,595 0.33 $335.93 $4,567,000 SEC
2009   Q3 13,595 0.33 Reduce 0.55% <0.01 $308.20 $4,190,000 SEC
2009   Q2 13,670 0.42 $311.12 $4,253,000 SEC
2009   Q1 13,670 0.36 Reduce 0.36% <0.01 $246.38 $3,368,000 SEC
2008   Q4 13,720 0.26 Reduce 0.36% <0.01 $208.09 $2,855,000 SEC
2008   Q3 13,770 0.34 Buy 0.34 $371.53 $5,116,000 SEC