The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
Berkshire Hathaway Hld B Common Stock 084670702 22,107,667 162,425 SH   SOLE   162,425 0 0
Berkshire Hathaway Inc. CL "A" Common Stock 084670108 1,638,800 8 SH   SOLE   8 0 0
Agnico Eagle Common Stock 268648102 380,867 13,425 SH   SOLE   13,425 0 0
Credit Acceptance Corporation Common Stock 225310101 20,044,714 81,423 SH   SOLE   81,423 0 0
D R Horton Inc Common Stock 23331A109 8,427,838 308,035 SH   SOLE   308,035 0 0
Range Resources Corp Com Common Stock 75281A109 3,757,818 76,100 SH   SOLE   76,100 0 0
Novagold Resources Inc New Common Stock 66987E206 543,250 158,845 SH   SOLE   158,845 0 0
Blackstone Group L.P. Common Stock 09253U108 7,255,651 177,530 SH   SOLE   177,530 0 0
Maxim Integrated Products Common Stock 57772K101 2,867,305 82,930 SH   SOLE   82,930 0 0
Lazard Ltd Pfd Common Stock G54050102 3,938,768 70,035 SH   SOLE   70,035 0 0
Tractor Supply Co. Common Stock 892356106 5,016,853 55,780 SH   SOLE   55,780 0 0
Johnson & Johnson Common Stock 478160104 1,737,225 17,825 SH   SOLE   17,825 0 0
Textura Corporation Common Stock 883211104 9,298,866 334,131 SH   SOLE   334,131 0 0
Goldcorp Inc. Common Stock 380956409 919,350 56,750 SH   SOLE   56,750 0 0
Mobileye N.V. Common Stock N51488117 2,480,115 46,645 SH   SOLE   46,645 0 0
Roper Industries Common Stock 776696106 2,830,931 16,415 SH   SOLE   16,415 0 0
Enterprise Prods Partners LP Common Stock 293792107 5,944,075 198,865 SH   SOLE   198,865 0 0
Portfolio Recovery As. Common Stock 73640Q105 4,760,796 76,405 SH   SOLE   76,405 0 0
SPDR Gold Trust Common Stock 78463V107 2,249,423 20,018 SH   SOLE   20,018 0 0
Petaquilla Minerals LTD Common Stock 716013107 400 20,000 SH   SOLE   20,000 0 0
Transdigm Group Inc. Common Stock 893641100 1,104,253 4,915 SH   SOLE   4,915 0 0
Kinger Morgan, Inc. Common Stock 49456B101 3,941,693 102,675 SH   SOLE   102,675 0 0
Central Fund of Canada Ltd Common Stock 153501101 268,180 23,000 SH   SOLE   23,000 0 0
Sprott Physical Gold Trust Common Stock 85207H104 752,514 77,900 SH   SOLE   77,900 0 0
New Gold, Inc. Common Stock 664535106 603,528 224,360 SH   SOLE   224,360 0 0
Exxon Mobil Corporation Common Stock 30231G102 896,896 10,780 SH   SOLE   10,780 0 0
Schlumberger Common Stock 806857108 1,594,515 18,500 SH   SOLE   18,500 0 0
Red Hat, Inc Common Stock 756577102 3,427,101 45,135 SH   SOLE   45,135 0 0
American International Group Common Stock 026874784 5,250,373 84,930 SH   SOLE   84,930 0 0
Apple Inc Common Stock 037833100 210,714 1,680 SH   SOLE   1,680 0 0
EOG Resources Common Stock 26875P101 710,468 8,115 SH   SOLE   8,115 0 0