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Institutional Investment Manager
CASTLEARK MANAGEMENT LLC
CASTLEARK MANAGEMENT LLC (CIK: 0001106832), located at 1 N Wacker Dr, Chicago, IL. Institutional holdings reported to the SEC.

Institutional Holdings (2015Q2)
Portfolio Summary: 369 holdings with a total value of $3,743,406,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 FACEBOOK INC 1,000,010 85,766,000 2.29%
2 APPLE INC 632,700 79,356,000 2.12%
3 DISNEY WALT CO 623,210 71,133,000 1.90%
4 HOME DEPOT INC 592,630 65,859,000 1.76%
5 SCHWAB CHARLES CORP 2,012,150 65,697,000 1.76%
6 NXP SEMICONDUCTORS N V 656,240 64,443,000 1.72%
7 GILEAD SCIENCES INC 536,770 62,845,000 1.68%
8 ST JUDE 755,640 55,215,000 1.47%
9 iShares MSCI Japan ETF 4,300,000 55,083,000 1.47%
10 FEDEX CORP 323,252 55,082,000 1.47%
11 HANESBRANDS INC 1,637,420 54,559,000 1.46%
12 RED HAT INC 717,110 54,450,000 1.45%
13 VISA INC 805,330 54,078,000 1.44%
14 PALO ALTO NETWORKS 297,031 51,891,000 1.39%
15 ISHARES TR 770,400 48,913,000 1.31%
16 CME GROUP INC 516,330 48,050,000 1.28%
17 NIKE INC 428,873 46,327,000 1.24%
18 ORACLE CORP 1,117,750 45,045,000 1.20%
19 DELPHI AUTOMOTIVE PLC 514,890 43,812,000 1.17%
20 EDWARDS LIFESCIENCES CORP 300,300 42,772,000 1.14%
21 MIDDLEBY CORP 375,398 42,131,000 1.13%
22 STARBUCKS CORP 766,520 41,097,000 1.10%
23 COCA COLA CO 1,008,800 39,575,000 1.06%
24 WABTEC 404,320 38,103,000 1.02%
25 MORGAN STANLEY 932,120 36,157,000 0.97%
26 CONOCOPHILLIPS 524,262 32,195,000 0.86%
27 ILLUMINA INC 144,840 31,627,000 0.84%
28 SPDR INDEX SHS FDS 830,000 31,067,000 0.83%
29 HAIN CELESTIAL GROUP INC COM 437,900 28,840,000 0.77%
30 MOBILEYE N V AMSTELVEEN 541,400 28,786,000 0.77%
31 BIOGEN INC 71,130 28,732,000 0.77%
32 SPLUNK 403,640 28,101,000 0.75%
33 AMAZON COM INC 64,690 28,081,000 0.75%
34 SCHLUMBERGER LTD 319,570 27,544,000 0.74%
35 SALESFORCE COM INC 375,700 26,160,000 0.70%
36 CBRE GROUP INC 642,712 23,780,000 0.64%
37 ISHARES TR 577,900 22,896,000 0.61%
38 EOG RES INC 259,445 22,714,000 0.61%
39 SOUTHWESTERN ENERGY CO 978,610 22,244,000 0.59%
40 LIGAND PHARMACEUTICALS INC 219,520 22,150,000 0.59%
41 PACCAR INC 338,710 21,613,000 0.58%
42 COACH INC 619,660 21,446,000 0.57%
43 HORIZON PHARMA PLC 610,600 21,212,000 0.57%
44 GOOGLE INC 40,139 20,893,000 0.56%
45 WILLIAMS SONOMA INC COM 253,710 20,873,000 0.56%
46 MERCK & CO INC 357,300 20,341,000 0.54%
47 ACADIA HEALTHCARE COMPANY IN 259,654 20,339,000 0.54%
48 G III APPAREL GROUP LTD COM 287,100 20,197,000 0.54%
49 AMSURG CORP 288,665 20,192,000 0.54%
50 MEDIVATION INC 176,630 20,171,000 0.54%
Page 1 of 8

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001106832-15-000003, filed 2015.08.17).

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.