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 20,668,400 158,500 SH   SOLE   158,500 0 0
Berkshire Hathaway Inc. CL "A" Common Stock 084670108 1,366,680 7 SH   SOLE   7 0 0
Agnico Eagle Common Stock 268648102 339,921 13,425 SH   SOLE   13,425 0 0
Credit Acceptance Corporation Common Stock 225310101 15,181,236 77,113 SH   SOLE   77,113 0 0
D R Horton Inc Common Stock 23331A109 8,882,428 302,535 SH   SOLE   302,535 0 0
Range Resources Corp Com Common Stock 75281A109 417,560 13,000 SH   SOLE   13,000 0 0
Novagold Resources Inc New Common Stock 66987E206 627,580 173,845 SH   SOLE   173,845 0 0
Blackstone Group L.P. Common Stock 09253U108 6,637,399 209,580 SH   SOLE   209,580 0 0
Maxim Integrated Products Common Stock 57772K101 2,244,480 67,200 SH   SOLE   67,200 0 0
Lazard Ltd Pfd Common Stock G54050102 259,800 6,000 SH   SOLE   6,000 0 0
Tractor Supply Co. Common Stock 892356106 4,536,416 53,800 SH   SOLE   53,800 0 0
Johnson & Johnson Common Stock 478160104 1,654,629 17,725 SH   SOLE   17,725 0 0
Textura Corporation Common Stock 883211104 8,047,170 311,423 SH   SOLE   311,423 0 0
Goldcorp Inc. Common Stock 380956409 710,510 56,750 SH   SOLE   56,750 0 0
Mobileye N.V. Common Stock N51488117 723,359 15,905 SH   SOLE   15,905 0 0
Roper Industries Common Stock 776696106 2,393,593 15,275 SH   SOLE   15,275 0 0
Enterprise Prods Partners LP Common Stock 293792107 7,048,319 283,065 SH   SOLE   283,065 0 0
Portfolio Recovery As. Common Stock 73640Q105 4,040,177 76,345 SH   SOLE   76,345 0 0
SPDR Gold Trust Common Stock 78463V107 2,139,123 20,018 SH   SOLE   20,018 0 0
INTUIT Common Stock 461202103 1,941,673 21,878 SH   SOLE   21,878 0 0
Transdigm Group Inc. Common Stock 893641100 1,043,995 4,915 SH   SOLE   4,915 0 0
Knight Therapeutics In Common Stock 499053106 1,695,275 308,400 SH   SOLE   308,400 0 0
Central Fund of Canada Ltd Common Stock 153501101 243,570 23,000 SH   SOLE   23,000 0 0
Sprott Physical Gold Trust Common Stock 85207H104 715,122 77,900 SH   SOLE   77,900 0 0
New Gold, Inc. Common Stock 664535106 486,597 214,360 SH   SOLE   214,360 0 0
Exxon Mobil Corporation Common Stock 30231G102 537,551 7,230 SH   SOLE   7,230 0 0
Schlumberger Common Stock 806857108 1,241,460 18,000 SH   SOLE   18,000 0 0
Red Hat, Inc Common Stock 756577102 1,079,997 15,025 SH   SOLE   15,025 0 0
American International Group Common Stock 026874784 4,807,540 84,610 SH   SOLE   84,610 0 0
Energy Transfer Equity LP Common Stock 29273V100 1,780,296 85,550 SH   SOLE   85,550 0 0
EOG Resources Common Stock 26875P101 1,122,900 14,250 SH   SOLE   14,250 0 0