PEAK6 INVESTMENTS, L.P.

141 W. JACKSON BLVD., CHICAGO, Illinois, 60604, (312) 362-2401

Report Date: 03/31/2013

Institutional Holdings information is filed by major institutions on form 13-F with the Securities and Exchange Commission.

Company	Class	Value of Shares ($1,000s)	Change in Value ($1,000s)	Change (%)	Shares Held
GENERAL MTRS CO	WT EXP 071019	118,713	2,953	2.55	6,958,558
GENERAL MTRS CO	WT EXP 071016	79,859	433	.55	3,252,903
LINCOLN NATL CORP IND	WT EXP 071019	33,724	156	.46	1,284,253
ZIONS BANCORPORATION	WT EXP 052220	26,393	25	.10	5,397,380
PPL CORP	CORP UNIT	25,605	25,605	New	500,000
DOLLAR GEN CORP NEW	COM	22,701	22,487	10,496.36	434,133
GOLDMAN SACHS GROUP INC	COM	18,564	3,723	25.08	113,092
LIBERTY GLOBAL PLC	SHS CL A	18,259	18,187	25,327.63	254,022
IAC INTERACTIVECORP	COM PAR $.001	18,201	16,455	942.56	366,211
TESORO CORP	COM	17,605	17,605	New	308,272
TYCO INTERNATIONAL LTD	SHS	17,329	12,208	238.35	513,457
NATIONAL OILWELL VARCO INC	COM	17,082	17,082	New	238,945
COMCAST CORP NEW	CL A SPL	16,931	16,931	New	436,590
LAS VEGAS SANDS CORP	COM	15,596	9,118	140.77	273,275
ARCELORMITTAL SA LUXEMBOURG	MAND CV NT 16	15,278	15,278	New	750,000
SPDR S&P 500 ETF TR	TR UNIT	15,255	721	4.96	92,045
CATERPILLAR INC DEL	COM	14,937	13,064	697.49	176,667
MOLSON COORS BREWING CO	CL B	14,197	6,162	76.69	284,850
SCHLUMBERGER LTD	COM	13,889	12,257	750.80	187,286
SPDR DOW JONES INDL AVRG ETF	UT SER 1	13,732	10,151	283.47	89,694