Martin Whitman - Third Avenue Management
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    53
Portfolio value:    $616,036,133
Holdings Activity Buys Sells    History
Holding/activity history for  SemGroup Corporation - CL A (SEMG)
Period Shares % of Portfolio Activity % Change to Portfolio Reported Price Value Filing
2016   Q3 0 0.00 Sell 100.00% 0.17 SEC
2016   Q2 113,491 0.17 $32.56 $3,695,000 SEC
2016   Q1 113,491 0.10 Reduce 20.25% 0.03 $22.40 $2,542,000 SEC
2015   Q4 142,302 0.14 Add 36.73% 0.04 $28.86 $4,107,000 SEC
2015   Q3 104,077 0.13 Add 7.49% <0.01 $43.24 $4,500,000 SEC
2015   Q2 96,825 0.20 $79.48 $7,696,000 SEC
2015   Q1 96,825 0.21 Add 0.03% <0.01 $81.34 $7,876,000 SEC
2014   Q4 96,800 0.18 Reduce 59.07% 0.26 $68.39 $6,620,000 SEC
2014   Q3 236,483 0.44 Reduce 51.12% 0.40 $83.27 $19,692,000 SEC
2014   Q2 483,807 0.78 Reduce 17.51% 0.14 $78.85 $38,148,000 SEC
2014   Q1 586,529 0.79 Reduce 34.79% 0.40 $65.68 $38,523,000 SEC
2013   Q4 899,481 1.14 Reduce 0.28% <0.01 $65.23 $58,673,000 SEC
2013   Q3 901,971 1.05 $57.02 $51,430,000 SEC
2013   Q2 901,971 1.03 Reduce 40.19% $53.86 $48,580,000 SEC
2012   Q2 1,507,951 0.00 Add 2.02% $31.93 $48,149,000 SEC
2012   Q1 1,478,026 1.23 Add 17.55% 0.18 $29.14 $43,070,000 SEC
2011   Q4 1,257,351 1.01 Add 33.39% 0.25 $26.06 $32,767,000 SEC
2011   Q3 942,632 0.58 Buy 0.58 $19.96 $18,815,000 SEC