ALYESKA INVESTMENT GROUP, L.P. Information

77 WEST WACKER DRIVE, CHICAGO, Illinois, 60601, (312) 899-7902

Report Date: 03/31/2013

Position Statistics:

Total Positions 285
New Positions 126
Increased Positions 139
Decreased Positions 146
Positions with Activity 285
Sold Out Positions 83
Total Mkt Value
(in $ millions)
1,624

Sector Weighting

Basic Materials 4.94%
Capital Goods 9.68%
Conglomerates 1.38%
Consumer Cyclical 8.4%
Consumer/Non-Cyclical 2.43%
Energy 7.31%
Financial 20.62%
Healthcare 10.71%
Services 15.41%
Technology 15%
Transportation 3.52%
Utilities 0.62%

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

139 INCREASED Positions as of 03/31/2013

Company Class Value of Shares ($1,000s) Change in Value ($1,000s) Change (%) Shares Held
VELTI PLC ST HELIER SHS 63 63 New 30,940
LIPOSCIENCE INC COM 254 254 New 41,250
CATERPILLAR INC DEL COM 4,687 339 7.80 53,900
ANTHERA PHARMACEUTICALS INC COM 343 343 New 565,277
SPDR SERIES TRUST S&P OILGAS EXP 460 460 New 7,500
SILVER SPRING NETWORKS INC COM 493 493 New 25,300
ZAIS FINL CORP COM 689 689 New 35,178
ARBOR RLTY TR INC COM 715 715 New 100,000
TETRAPHASE PHARMACEUTICALS INC COM 782 782 New 100,000
MA COM TECHNOLOGY SOLUTIONS COM 802 802 New 57,321
AERCAP HOLDINGS NV SHS 17,963 817 4.76 1,100,000
ALLEGHENY TECHNOLOGIES INC COM 867 867 New 29,724
MGIC INVT CORP WIS COM 881 881 New 143,640
FIVE BELOW INC COM 950 950 New 24,703
CLOROX CO DEL COM 5,340 990 22.75 62,110
ENANTA PHARMACEUTICALS INC COM 1,000 1,000 New 50,363
BP PLC SPONSORED ADR 1,093 1,093 New 25,000
GLADSTONE LD CORP COM 1,121 1,121 New 66,000
CAREFUSION CORP COM 19,019 1,225 6.88 552,712
HYPERION THERAPEUTICS INC COM 2,053 1,286 167.58 100,000

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