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Institutional Investment Manager
BLAIR WILLIAM & CO/IL
BLAIR WILLIAM & CO/IL (CIK: 0000902367) incorporated in Delaware, located at 150 North Riverside Plaza, Chicago, IL. Institutional holdings reported to the SEC.

Institutional Holdings (2015Q4)
Portfolio Summary: 1,250 holdings with a total value of $10,650,761,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 APPLE INC 2,688,572 282,999,000 2.66%
2 GILEAD SCIENCES INC 2,393,915 242,240,000 2.27%
3 STARBUCKS CORP 3,892,471 233,664,000 2.19%
4 VISA INC 2,936,551 227,729,000 2.14%
5 IDEXX LAB 2,507,472 182,845,000 1.72%
6 AMAZON COM INC 246,142 166,364,000 1.56%
7 EXPRESS SCRIPTS HLDG CO 1,567,319 136,999,000 1.29%
8 ALPHABET INC 173,032 131,310,000 1.23%
9 FASTENAL CO 3,205,480 130,847,000 1.23%
10 AFFILIATED MANAGERS GROUP 810,260 129,447,000 1.22%
11 STERICYCLE 1,046,137 126,164,000 1.18%
12 MASTERCARD INCORPORATED 1,248,567 121,560,000 1.14%
13 WALGREENS BOOTS ALLIANCE INC 1,317,673 112,206,000 1.05%
14 BRISTOL MYERS SQUIBB CO 1,599,252 110,012,000 1.03%
15 RED HAT INC 1,308,395 108,347,000 1.02%
16 DANAHER CORP DEL 1,117,916 103,831,000 0.97%
17 MICROSOFT CORP 1,792,260 99,434,000 0.93%
18 CELGENE CORP 828,292 99,195,000 0.93%
19 ECOLAB INC 785,404 89,834,000 0.84%
20 DEXCOM 1,085,146 88,873,000 0.83%
21 FACEBOOK INC 825,798 86,427,000 0.81%
22 CERNER CORP 1,430,775 86,090,000 0.81%
23 Ultimate Software Group Inc 429,854 84,040,000 0.79%
24 ADOBE INC 891,942 83,788,000 0.79%
25 SALESFORCE COM INC 1,065,051 83,500,000 0.78%
26 SCHLUMBERGER LTD 1,189,586 82,973,000 0.78%
27 WEX INC 891,882 78,842,000 0.74%
28 VERISK ANALYTICS INC 990,562 76,154,000 0.72%
29 ZOETIS INC 1,584,661 75,936,000 0.71%
30 AIRGAS INC 546,674 75,615,000 0.71%
31 SPDR S&P 500 ETF TR 366,752 74,769,000 0.70%
32 GENERAL ELECTRIC CO 2,378,905 74,103,000 0.70%
33 GOLDMAN SACHS GROUP INC 407,708 73,480,000 0.69%
34 EOG RES INC 1,029,090 72,848,000 0.68%
35 ALPHABET INC 90,123 70,116,000 0.66%
36 O REILLY AUTOMOTIVE INC NEW 276,424 70,051,000 0.66%
37 COSTAR GROUP 331,012 68,417,000 0.64%
38 GUIDEWIRE SOFTWARE INC 1,122,281 67,515,000 0.63%
39 DISNEY WALT CO 610,777 64,180,000 0.60%
40 JOHNSON & JOHNSON 620,956 63,784,000 0.60%
41 ILLINOIS TOOL WKS INC 672,713 62,347,000 0.59%
42 VANGUARD INDEX FDS 584,221 62,155,000 0.58%
43 PRA GROUP INC 1,786,819 61,984,000 0.58%
44 TRANSDIGM GROUP INC COM 267,173 61,035,000 0.57%
45 COLGATE PALMOLIVE CO 915,576 60,995,000 0.57%
46 COSTCO WHSL CORP NEW 372,906 60,224,000 0.57%
47 ABBOTT LABS 1,329,537 59,709,000 0.56%
48 PALO ALTO NETWORKS 332,266 58,525,000 0.55%
49 PRAXAIR INC 568,106 58,174,000 0.55%
50 WORKDAY A 729,484 58,125,000 0.55%
Page 1 of 25

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001144204-16-081782, filed 2016.02.16).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.