BLAIR WILLIAM & CO/IL Information

222 WEST ADAMS ST, CHICAGO, Illinois, 60606-5312, (312) 236-1600

Report Date: 03/31/2013

Position Statistics:

Total Positions 1,502
New Positions 159
Increased Positions 724
Decreased Positions 650
Positions with Activity 1,374
Sold Out Positions 129
Total Mkt Value
(in $ millions)
25,233

Sector Weighting

Basic Materials 4.4%
Capital Goods 5.14%
Conglomerates 0.92%
Consumer Cyclical 5.53%
Consumer/Non-Cyclical 7.03%
Energy 6.25%
Financial 16.67%
Healthcare 9.63%
Services 21.85%
Technology 17.46%
Transportation 4.11%
Utilities 0.66%

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

1,502 Positions as of 03/31/2013

Company Class Value of Shares ($1,000s) Change in Value ($1,000s) Change (%) Shares Held
BIOMARIN PHARMACEUTICAL INC COM 51,175 -26,999 (34.54) 799,483
IHS INC CL A 50,793 5,234 11.49 486,332
UNITED PARCEL SERVICE INC CL B 50,615 2,022 4.16 570,628
ALIGN TECHNOLOGY INC COM 50,250 -2,189 (4.18) 1,336,791
SPDR S&P 500 ETF TR TR UNIT 49,811 25,200 102.39 298,379
NXSTAGE MEDICAL INC COM 49,737 -449 (0.89) 3,805,463
ALLEGIANT TRAVEL CO COM 49,589 -1,972 (3.83) 520,729
VERISIGN INC COM 49,476 4,008 8.82 1,015,933
FIRST CASH FINL SVCS INC COM 48,825 -12,492 (20.37) 875,782
DENBURY RES INC COM NEW 47,754 3,959 9.04 2,529,333
ROCKWOOD HLDGS INC COM 46,529 -1,898 (3.92) 684,047
SILICON LABORATORIES INC COM 46,331 -43,509 (48.43) 1,104,701
AUTOMATIC DATA PROCESSING INC COM 46,329 -1,260 (2.65) 643,541
MANPOWERGROUP INC COM 45,964 -2,114 (4.4) 790,446
OIL STS INTL INC COM 45,938 -362 (0.78) 450,860
FOSSIL INC COM 45,734 45,734 New 421,280
MARRIOTT INTL INC NEW CL A 45,128 1,977 4.58 1,031,962
OLD DOMINION FGHT LINES INC COM 44,633 -10,485 (19.02) 1,082,531
VANGUARD INTL EQUITY INDEX FD ALLWRLD EX US 44,414 5,488 14.10 910,865
CELANESE CORP DEL COM SER A 44,040 -1,650 (3.61) 890,961

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