13F-HR 1 mm05-1407_13f.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: 3/31/2007 Check here if Amendment [_]; Amendment Number:________ This Amendment (Check only one.): [_] is a restatement. [_] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Leucadia National Corporation Address: 315 Park Avenue South, 20th Floor New York, NY 10010 Form 13F File Number: 028-11122 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Joseph A. Orlando Title: Vice President and Chief Financial Officer Phone: 212-460-1900 Signature, Place, and Date of Signing: /s/ Joseph A. Orlando New York, NY MAY 14, 2007 -------------------------------- ------------ ------------ [SIGNATURE] [City, State] [Date] Report Type (Check only one.): [X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) [_] 13F NOTICE. (Check here if no holdings are in this report, and all holdings are reported by other reporting manager(s).) [_] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) List of Other Managers Reporting for this Manager: FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 10 Form 13F Information Table Value Total: $311,992 List of Other Included Managers: No. Form 13F File Number Name

FORM 13F INFORMATION TABLE Col. 1 Col. 2 Col. 3 Col. 4 Col. 5 Col. 6 Col. 7 Col. 8 ------ ------ ------ ------ ------ ------ ------ ------ Title of Value Shrs or Sh/ Put/ Investment Other Voting Authority Name of Issuer Class Cusip (x$1000) Prn Amt Prn Call Discretion Managers Sole Shared None -------------- ----------- ----- -------- ------- --- ---- ---------- -------- ---- ------ ---- Accelrys Inc COM 00430U 10 3 223 34,917 SH SOLE 34,917 ALCATEL-LUCENT SPONSORED ADR 013904 30 5 491 41,533 SH SOLE 41,533 EASTMAN CHEM CO COM 277432 10 0 253,705 4,006,077 SH SOLE 4,006,077 FEI Co COM 30241L 10 9 956 26,515 SH SOLE 26,515 International Assets Holding Co COM 459028 10 6 38,683 1,384,985 SH SOLE 1,384,985 OLYMPIC STEEL COM 68162K 10 6 16,115 520,000 SH SOLE 520,000 Symyx Technologies COM 87155S 10 8 354 20,000 SH SOLE 20,000 Veeco Instrs Inc Del COM 922417 10 0 496 25,420 SH SOLE 25,420 WASHINGTON GROUP INTL INC COM NEW 938862 20 8 233 3,514 SH SOLE 3,514 WINN DIXIE STORES INC COM NEW 974280 30 7 736 41,725 SH SOLE 41,725