DRIEHAUS CAPITAL MANAGEMENT LLC Information

25 EAST ERIE ST, CHICAGO, Illinois, 60611, (312) 587-3800

Report Date: 03/31/2013

Position Statistics:

Total Positions 579
New Positions 132
Increased Positions 235
Decreased Positions 337
Positions with Activity 572
Sold Out Positions 141
Total Mkt Value
(in $ millions)
2,100

Sector Weighting

Basic Materials 4.09%
Capital Goods 6.44%
Conglomerates 1.8%
Consumer Cyclical 6.16%
Consumer/Non-Cyclical 3.86%
Energy 12.15%
Financial 5.48%
Healthcare 12.87%
Services 21.21%
Technology 19.05%
Transportation 2.94%
Utilities 3.9%

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

579 Positions as of 03/31/2013

Company Class Value of Shares ($1,000s) Change in Value ($1,000s) Change (%) Shares Held
SIMON PPTY GROUP INC NEW COM 1,757 -20,777 (92.2) 10,073
ENTERPRISE PRODS PARTNERS L P COM -20,603 Sold Out 0
ELLIE MAE INC COM -20,513 Sold Out 0
LYONDELLBASELL INDUSTRIES N V SHS - A - -19,769 Sold Out 0
GULFPORT ENERGY CORP COM NEW -18,994 Sold Out 0
PLAINS ALL AMERN PIPELINE L P UNIT LTD PARTN 6,526 -17,892 (73.28) 111,936
SILVER BAY RLTY TR CORP COM 312 -17,798 (98.28) 16,702
WALTER INVT MGMT CORP COM 6,445 -16,206 (71.55) 172,515
FAMILY DLR STORES INC COM -15,889 Sold Out 0
PIONEER NAT RES CO COM -14,737 Sold Out 0
CONNS INC COM 15,136 -13,174 (46.54) 317,313
NORTHERN TIER ENERGY LP COM UN REPR PART 8,941 -12,521 (58.34) 360,080
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 4,990 -11,921 (70.49) 92,922
CUBIST PHARMACEUTICALS INC COM -11,440 Sold Out 0
BREITBURN ENERGY PARTNERS LP COM UT LTD PTN -11,165 Sold Out 0
VERTEX PHARMACEUTICALS INC COM -10,965 Sold Out 0
INTERXION HOLDING N.V SHS 3,605 -10,749 (74.89) 134,752
CHART INDS INC COM PAR $0.01 2,509 -10,652 (80.93) 26,882
MERCADOLIBRE INC COM -10,648 Sold Out 0
HOME LN SERVICING SOLUTIONS LT ORD SHS 7,040 -10,521 (59.91) 298,193

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