Mason Hawkins - Southeastern Asset Management Inc
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    49
Portfolio value:    $2,032,773,449
Holdings Activity Buys Sells    History
Holding/activity history for  Alleghany Corp (Y)
Period Shares % of Portfolio Activity % Change to Portfolio Reported Price Value Filing
2004   Q1 0 0.00 Sell 100.00% 0.38 SEC
2003   Q4 252,645 0.38 Reduce 53.30% 0.40 $222.50 $56,214,000 SEC
2003   Q3 540,965 0.75 Reduce 19.62% 0.18 $195.25 $105,623,000 SEC
2003   Q2 672,968 0.92 Reduce 2.82% 0.03 $191.00 $128,537,000 SEC
2003   Q1 692,517 0.94 Reduce 7.87% 0.09 $163.75 $113,399,000 SEC
2002   Q4 751,634 1.10 Reduce 14.33% 0.22 $177.50 $133,415,000 SEC
2002   Q3 877,365 1.50 Reduce 4.45% 0.06 $189.50 $166,260,000 SEC
2002   Q1 918,189 1.46 Add 2.00% 0.03 $187.50 $172,160,000 SEC
2001   Q4 900,201 1.50 Reduce 1.46% 0.02 $192.45 $173,243,000 SEC
2001   Q3 913,585 1.68 Add 0.34% <0.01 $199.00 $181,804,000 SEC
2001   Q2 910,485 1.60 Add 4.71% 0.07 $203.00 $184,828,000 SEC
2001   Q1 869,555 1.49 Add 17.02% 0.22 $200.00 $173,911,000 SEC
2000   Q4 743,089 1.24 Reduce 0.01% <0.01 $205.50 $152,705,000 SEC
2000   Q3 743,189 1.30 $196.00 $145,665,000 SEC
2000   Q2 743,189 1.17 Reduce 0.40% <0.01 $168.00 $124,856,000 SEC
2000   Q1 746,203 1.37 Add 2.00% 0.03 $188.00 $140,286,000 SEC
1999   Q4 731,589 1.51 Reduce 0.29% <0.01 $185.50 $135,709,000 SEC
1999   Q3 733,687 1.44 $177.00 $129,862,000 SEC
1999   Q2 733,687 1.62 $185.00 $135,732,000 SEC
1999   Q1 733,687 1.83 $183.88 $134,907,000 SEC