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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 (2016Q2)
Portfolio Summary: 373 holdings with a total value of $3,135,064,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 ULTA BEAUTY INC 267,810 65,249,000 2.08%
2 UNITEDHEALTH GROUP INC 416,450 58,803,000 1.88%
3 HOME DEPOT INC 446,500 57,014,000 1.82%
4 GENERAL ELECTRIC CO 1,787,870 56,282,000 1.80%
5 SALESFORCE COM INC 704,860 55,973,000 1.79%
6 EDWARDS LIFESCIENCES CORP 557,300 55,580,000 1.77%
7 FACEBOOK INC 453,045 51,774,000 1.65%
8 TRANSDIGM GROUP INC COM 185,737 48,977,000 1.56%
9 BRISTOL MYERS SQUIBB CO 652,570 47,997,000 1.53%
10 ADOBE INC 478,920 45,876,000 1.46%
11 MONSTER BEVERAGE COR 278,075 44,689,000 1.43%
12 AMAZON COM INC 60,670 43,417,000 1.38%
13 CME GROUP INC 440,040 42,860,000 1.37%
14 EOG RES INC 509,400 42,494,000 1.36%
15 DEVON ENERGY CORP NEW 1,137,840 41,247,000 1.32%
16 MEDTRONIC PLC 459,790 39,896,000 1.27%
17 DELPHI AUTOMOTIVE PLC 610,990 38,248,000 1.22%
18 PIONEER NAT RES CO 250,870 37,934,000 1.21%
19 ALPHABET INC 54,395 37,647,000 1.20%
20 COACH INC 888,725 36,207,000 1.15%
21 VISA INC 485,060 35,977,000 1.15%
22 NXP SEMICONDUCTORS N V 456,050 35,727,000 1.14%
23 CONTINENTAL RESOURE 779,900 35,306,000 1.13%
24 SHERWIN WILLIAMS CO 119,480 35,088,000 1.12%
25 APPLE INC 359,450 34,363,000 1.10%
26 ABIOMED INC 303,577 33,178,000 1.06%
27 MOBILEYE N V AMSTELVEEN 704,930 32,525,000 1.04%
28 MICROCHIP TECHNOLOGY 618,640 31,402,000 1.00%
29 PALO ALTO NETWORKS 248,260 30,447,000 0.97%
30 JB HUNT TRANSPORT 362,820 29,363,000 0.94%
31 CVS HEALTH CORP 291,200 27,879,000 0.89%
32 RED HAT INC 381,820 27,720,000 0.88%
33 ISHARES TR 487,500 27,212,000 0.87%
34 COSTCO WHSL CORP NEW 167,180 26,254,000 0.84%
35 GILEAD SCIENCES INC 312,130 26,038,000 0.83%
36 FEDEX CORP 151,180 22,946,000 0.73%
37 CBRE GROUP INC 864,090 22,881,000 0.73%
38 ENTERPRISE PRODS PARTNERS L 708,355 20,726,000 0.66%
39 LIGAND PHARMACEUTICALS INC 172,400 20,562,000 0.66%
40 DISNEY WALT CO 188,880 18,476,000 0.59%
41 STERIS PLC SHS USD 267,577 18,396,000 0.59%
42 NIKE INC 328,390 18,127,000 0.58%
43 U S SILICA HLDGS INC COM 521,760 17,985,000 0.57%
44 C.H. ROBINSON WORLDW 239,610 17,791,000 0.57%
45 EURONET WORLDWIDE INC 240,448 16,637,000 0.53%
46 ANADARKO PETR 308,000 16,401,000 0.52%
47 VCA INCORPORATED 240,730 16,276,000 0.52%
48 BIOGEN INC 66,490 16,079,000 0.51%
49 CRITEO SA 349,675 16,057,000 0.51%
50 POST HLDGS INC 182,752 15,112,000 0.48%
Page 1 of 8

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001106832-16-000007, filed 2016.08.10).

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.