DRIEHAUS CAPITAL MANAGEMENT LLC Information

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

Report Date: 03/31/2013

Position Statistics:

Total Positions 578
New Positions 132
Increased Positions 235
Decreased Positions 336
Positions with Activity 571
Sold Out Positions 140
Total Mkt Value
(in $ millions)
2,128

Sector Weighting

Basic Materials 3.97%
Capital Goods 6.41%
Conglomerates 1.95%
Consumer Cyclical 6.23%
Consumer/Non-Cyclical 3.81%
Energy 12.18%
Financial 5.19%
Healthcare 13.11%
Services 21.29%
Technology 19.09%
Transportation 2.95%
Utilities 3.77%

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

336 DECREASED Positions as of 03/31/2013

Company Class Value of Shares ($1,000s) Change in Value ($1,000s) Change (%) Shares Held
KINDER MORGAN INC DEL COM 718 -35 (4.63) 18,609
MASTEC INC COM 665 -806 (54.82) 20,195
LITHIA MTRS INC CL A 620 -395 (38.93) 11,061
NEWCASTLE INVT CORP COM 601 -6,241 (91.21) 109,743
BEACON ROOFING SUPPLY INC COM 583 -7,913 (93.14) 14,225
IMAX CORP COM 573 -1,112 (66.01) 22,800
BROOKDALE SR LIVING INC COM 485 -292 (37.62) 17,440
PIER 1 IMPORTS INC COM 430 -29 (6.24) 17,389
CYANOTECH CORP COM PAR $0.02 410 -39 (8.6) 74,962
BUILDERS FIRSTSOURCE INC COM 390 -561 (59.01) 55,675
MINDSPEED TECHNOLOGIES, INC. COM NEW 386 -255 (39.75) 117,681
CARBONITE INC COM 374 -893 (70.5) 28,350
WABASH NATL CORP COM 364 -6,056 (94.33) 36,625
SILVER BAY RLTY TR CORP COM 279 -15,901 (98.28) 16,702
MUELLER WTR PRODS INC COM SER A 278 -1,092 (79.72) 41,300
PROVIDENT FINL HLDGS INC COM 267 -534 (66.69) 16,880
ABERCROMBIE & FITCH CO CL A -2,862 Sold Out 0
AFFYMAX INC COM -53 Sold Out 0
AIR LEASE CORP CL A -327 Sold Out 0
ALASKA AIR GROUP INC COM -7,788 Sold Out 0

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