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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 (2015Q1)
Portfolio Summary: 355 holdings with a total value of $4,146,716,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 NXP SEMICONDUCTORS N V 1,180,560 118,482,000 2.86%
2 MEDTRONIC PLC 1,316,026 102,636,000 2.48%
3 DELPHI AUTOMOTIVE PLC 1,064,780 84,906,000 2.05%
4 APPLE INC 655,910 81,615,000 1.97%
5 FACEBOOK INC 963,770 79,236,000 1.91%
6 ISHARES TR 1,215,900 78,024,000 1.88%
7 GILEAD SCIENCES INC 659,500 64,717,000 1.56%
8 HOME DEPOT INC 528,766 60,073,000 1.45%
9 SCHWAB CHARLES CORP 1,907,888 58,076,000 1.40%
10 RED HAT INC 742,800 56,267,000 1.36%
11 FEDEX CORP 334,912 55,411,000 1.34%
12 VISA INC 832,140 54,430,000 1.31%
13 iShares MSCI Japan ETF 4,300,000 53,879,000 1.30%
14 DISNEY WALT CO 503,630 52,826,000 1.27%
15 EOG RES INC 527,645 48,380,000 1.17%
16 HANESBRANDS INC 1,422,192 47,658,000 1.15%
17 CME GROUP INC 482,570 45,704,000 1.10%
18 PALO ALTO NETWORKS 307,851 44,971,000 1.08%
19 NIKE INC 443,593 44,506,000 1.07%
20 ORACLE CORP 1,009,450 43,558,000 1.05%
21 UNION PAC CORP 393,520 42,622,000 1.03%
22 COCA COLA CO 1,048,300 42,509,000 1.03%
23 ST JUDE 648,229 42,394,000 1.02%
24 CVS HEALTH CORP 410,590 42,377,000 1.02%
25 MONSANTO CO NEW 370,215 41,664,000 1.00%
26 WABTEC 418,820 39,792,000 0.96%
27 HORIZON PHARMA PLC 1,519,050 39,450,000 0.95%
28 STARBUCKS CORP 415,680 39,365,000 0.95%
29 BLACKROCK INC 101,230 37,034,000 0.89%
30 MIDDLEBY CORP 345,403 35,456,000 0.86%
31 ILLUMINA INC 186,772 34,672,000 0.84%
32 BORGWARNER INC 552,400 33,409,000 0.81%
33 MERCK & CO INC 563,450 32,387,000 0.78%
34 CONOCOPHILLIPS 519,162 32,323,000 0.78%
35 COACH INC 735,425 30,469,000 0.73%
36 UNITEDHEALTH GROUP INC 245,870 29,084,000 0.70%
37 SOUTHWESTERN ENERGY CO 1,202,210 27,879,000 0.67%
38 MACYS INC 423,480 27,488,000 0.66%
39 MEDIVATION INC 212,220 27,391,000 0.66%
40 CBRE GROUP INC 666,712 25,808,000 0.62%
41 C.H. ROBINSON WORLDW 323,412 23,680,000 0.57%
42 HELEN OF TROY LTD 287,668 23,442,000 0.57%
43 HAIN CELESTIAL GROUP INC COM 365,718 23,424,000 0.56%
44 ISHARES TR 577,900 23,191,000 0.56%
45 SALESFORCE COM INC 345,620 23,091,000 0.56%
46 GOOGLE INC 41,440 22,709,000 0.55%
47 PACCAR INC 350,510 22,131,000 0.53%
48 ACADIA HEALTHCARE COMPANY IN 289,254 20,711,000 0.50%
49 VERINT SYS INC COM 331,119 20,506,000 0.49%
50 EDWARDS LIFESCIENCES CORP 140,080 19,956,000 0.48%
Page 1 of 8

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001106832-15-000002, filed 2015.05.15).

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.