Dark
Light
System
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 (2016Q3)
Portfolio Summary: 1,296 holdings with a total value of $11,313,465,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 APPLE INC 2,729,524 308,573,000 2.73%
2 IDEXX LAB 2,239,499 252,459,000 2.23%
3 VISA INC 2,957,392 244,576,000 2.16%
4 AMAZON COM INC 252,654 211,550,000 1.87%
5 STARBUCKS CORP 3,829,103 207,308,000 1.83%
6 MICROSOFT CORP 2,837,501 163,440,000 1.44%
7 GILEAD SCIENCES INC 1,812,193 143,381,000 1.27%
8 ALPHABET INC 181,096 140,764,000 1.24%
9 FACEBOOK INC 999,651 128,225,000 1.13%
10 MASTERCARD INCORPORATED 1,231,880 125,368,000 1.11%
11 FASTENAL CO 2,927,536 122,312,000 1.08%
12 RED HAT INC 1,440,865 116,465,000 1.03%
13 DANAHER CORP DEL 1,447,202 113,446,000 1.00%
14 ZOETIS INC 2,162,235 112,458,000 0.99%
15 ADOBE INC 1,020,025 110,714,000 0.98%
16 WALGREENS BOOTS ALLIANCE INC 1,337,760 107,850,000 0.95%
17 CERNER CORP 1,729,873 106,820,000 0.94%
18 AFFILIATED MANAGERS GROUP 727,394 105,254,000 0.93%
19 DEXCOM 1,130,989 99,142,000 0.88%
20 ECOLAB INC 804,400 97,912,000 0.87%
21 SCHLUMBERGER LTD 1,237,176 97,292,000 0.86%
22 GENERAL ELECTRIC CO 3,013,643 89,264,000 0.79%
23 BRISTOL MYERS SQUIBB CO 1,645,463 88,723,000 0.78%
24 WORKDAY A 947,231 86,852,000 0.77%
25 EOG RES INC 893,312 86,392,000 0.76%
26 COSTCO WHSL CORP NEW 564,968 86,163,000 0.76%
27 CELGENE CORP 822,400 85,965,000 0.76%
28 Ultimate Software Group Inc 413,691 84,554,000 0.75%
29 JOHNSON & JOHNSON 700,736 82,778,000 0.73%
30 VERISK ANALYTICS INC 955,620 77,673,000 0.69%
31 SPDR S&P 500 ETF TR 354,634 76,707,000 0.68%
32 WATSCO INC 541,182 76,253,000 0.67%
33 COSTAR GROUP 352,160 76,253,000 0.67%
34 TRANSDIGM GROUP INC COM 262,425 75,872,000 0.67%
35 SALESFORCE COM INC 1,054,121 75,190,000 0.66%
36 ALPHABET INC 93,191 74,931,000 0.66%
37 HOME DEPOT INC 580,891 74,749,000 0.66%
38 ILLINOIS TOOL WKS INC 616,520 73,884,000 0.65%
39 GUIDEWIRE SOFTWARE INC 1,225,522 73,507,000 0.65%
40 O REILLY AUTOMOTIVE INC NEW 260,513 72,972,000 0.65%
41 COLGATE PALMOLIVE CO 947,361 70,237,000 0.62%
42 GRAINGER W W INC 309,564 69,602,000 0.62%
43 PRAXAIR INC 551,538 66,642,000 0.59%
44 INTERCONTINENTAL EXCHANGE IN 246,308 66,346,000 0.59%
45 GOLDMAN SACHS GROUP INC 409,057 65,969,000 0.58%
46 EXPRESS SCRIPTS HLDG CO 930,558 65,632,000 0.58%
47 UNION PAC CORP 655,717 63,952,000 0.57%
48 AMPHENOL CORP NEW CL A 980,771 63,672,000 0.56%
49 DISNEY WALT CO 683,716 63,490,000 0.56%
50 PALO ALTO NETWORKS 382,088 60,878,000 0.54%
Page 1 of 26

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001144204-16-133784, filed 2016.11.14).

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.