Portfolio Performance HistoryFILE DATEREPORT PERIODQTR YEARFILE TYPENOS. OF STOCKSREPORTED VALUERETURN2021-04-132021-03-31Q1_202113F-HR14$571,188,00010.41%2021-02-022020-12-31Q4_202013F-HR13$517,321,000-0.02%2020-12-162020-09-30Q3_202013F-HR/A12$517,413,0000.00%2020-11-122020-09-30Q3_202013F-HR12$517,413,00015.99%2020-08-112020-06-30Q2_202013F-HR/A10$446,101,0000.00%2020-08-102020-06-30Q2_202013F-HR11$458,188,00021.39%2020-05-082020-03-31Q1_202013F-HR11$377,456,0009.67%2020-01-292019-12-31Q4_201913F-HR7$344,168,0002.30%2019-11-082019-09-30Q3_201913F-HR10$336,417,00027.92%2019-08-132019-06-30Q2_201913F-HR9$262,991,000-1.31% Portfolio Details Stock NameTickersValueCurrent Value (x1000)Change Value %WeightComputed PriceShares Change %Current Shares BERKSHIRE HATHAWAY INC NEWBRK/BDECR$109,266-0.04%19.13%$255.47-0.13%427,704ALPHABET INC USD 0.001 CLS AGOOGLINCR$100,0183.54%17.51%$2062.522.85%48,493HERBALIFE NUTRITION LTDHLFDECR$94,068-0.05%16.47%$44.360.03%2,120,559INTERACTIVE BROKERS GROUP INIBKRDECR$62,373-0.21%10.92%$73.04-0.34%853,951VISA INCVDECR$44,328-0.35%7.76%$211.73-0.33%209,360CORTEVA INCCTVAINCR$38,4450.19%6.73%$46.62-0.01%824,656REGENERON PHARMACEUTICALSREGNINCR$28,0982.05%4.92%$473.132.12%59,387BANK NEW YORK MELLON CORPBKINCR$23,5820.16%4.13%$47.290.04%498,663STATE STR CORPSTTINCR$22,5970.18%3.96%$84.010.02%268,980ALTRIA GROUP INCMOBUY$14,7290.00%2.58%$51.160.00%287,909ALPHABET INCGOOGDECR$14,464-0.38%2.53%$2068.65-0.52%6,992NEWMONT CORPNEMDECR$7,921-0.60%1.39%$60.27-0.60%131,430GRAHAM HLDGS COGHCINCR$7,8410.08%1.37%$562.440.03%13,941MERRIMACK PHARMACEUTICALS INMACKDECR$3,458-0.06%0.61%$6.280.04%550,679