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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 (2015Q4)
Portfolio Summary: 387 holdings with a total value of $3,327,543,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 ISHARES TR 1,907,500 112,008,000 3.37%
2 FACEBOOK INC 708,185 74,119,000 2.23%
3 RED HAT INC 781,490 64,715,000 1.94%
4 SCHWAB CHARLES CORP 1,807,680 59,527,000 1.79%
5 VISA INC 758,940 58,856,000 1.77%
6 NIKE INC 930,310 58,144,000 1.75%
7 CVS HEALTH CORP 579,350 56,643,000 1.70%
8 ALPHABET INC 73,200 55,550,000 1.67%
9 GENERAL ELECTRIC CO 1,755,990 54,699,000 1.64%
10 BRISTOL MYERS SQUIBB CO 748,400 51,482,000 1.55%
11 HOME DEPOT INC 382,980 50,649,000 1.52%
12 ADOBE INC 539,010 50,635,000 1.52%
13 SALESFORCE COM INC 640,525 50,217,000 1.51%
14 PALO ALTO NETWORKS 279,980 49,316,000 1.48%
15 ULTA BEAUTY INC 261,660 48,407,000 1.45%
16 DISNEY WALT CO 452,860 47,587,000 1.43%
17 MICROSOFT CORP 854,350 47,399,000 1.42%
18 FEDEX CORP 309,682 46,140,000 1.39%
19 UNITEDHEALTH GROUP INC 381,670 44,900,000 1.35%
20 EDWARDS LIFESCIENCES CORP 566,750 44,762,000 1.35%
21 MIDDLEBY CORP 411,518 44,390,000 1.33%
22 CME GROUP INC 487,650 44,181,000 1.33%
23 AMAZON COM INC 64,360 43,500,000 1.31%
24 STARBUCKS CORP 722,500 43,372,000 1.30%
25 EOG RES INC 573,995 40,633,000 1.22%
26 GILEAD SCIENCES INC 373,070 37,751,000 1.13%
27 APPLE INC 343,620 36,169,000 1.09%
28 CONOCOPHILLIPS 748,555 34,950,000 1.05%
29 COACH INC 1,040,940 34,070,000 1.02%
30 MOBILEYE N V AMSTELVEEN 782,010 33,063,000 0.99%
31 JB HUNT TRANSPORT 440,680 32,328,000 0.97%
32 HANESBRANDS INC 993,130 29,228,000 0.88%
33 CAVIUM INC 395,050 25,959,000 0.78%
34 CBRE GROUP INC 724,472 25,052,000 0.75%
35 ST JUDE 388,105 23,973,000 0.72%
36 LIGAND PHARMACEUTICALS INC 206,576 22,397,000 0.67%
37 MONSTER BEVERAGE COR 148,635 22,141,000 0.67%
38 MORGAN STANLEY 651,385 20,721,000 0.62%
39 J2 GLOBAL INC 245,593 20,217,000 0.61%
40 ENTERPRISE PRODS PARTNERS L 721,570 18,458,000 0.55%
41 LENNAR 371,500 18,170,000 0.55%
42 HOLOGIC INC 463,320 17,926,000 0.54%
43 TYLER TECHNOLOGIES INC 100,009 17,434,000 0.52%
44 STERIS PLC SHS USD 227,530 17,142,000 0.52%
45 NUANCE COMM 856,513 17,036,000 0.51%
46 C.H. ROBINSON WORLDW 266,300 16,516,000 0.50%
47 VISTEON CORP COM NEW 141,395 16,190,000 0.49%
48 HEARTLAND PMT SYS INC 169,835 16,104,000 0.48%
49 SPLUNK 268,170 15,771,000 0.47%
50 BEACON ROOFING SUPPLY INC 381,704 15,719,000 0.47%
Page 1 of 8

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001106832-16-000005, filed 2016.02.17).

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.