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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 (2014Q2)
Original 13F HR (0001106832-14-000004) filed in 2014.08.15
#
Name
Shares
Value ($)
%
Options
Notes
1 INTEL CORP 3,292,970 101,753 2.80%
2 SCHWAB CHARLES CORP 2,541,890 68,453 1.89%
3 SOUTHWESTERN ENERGY CO 2,030,530 92,369 2.55%
4 ORACLE CORP 1,925,030 78,021 2.15%
5 VONAGE HLDGS CORP 1,779,975 6,675 0.18%
6 ULTRA PETROLEUM CORP 1,628,090 48,338 1.33%
7 HALCON RESOURCES CORP 1,595,750 11,633 0.32%
8 OFFICE DEPOT INC 1,220,270 6,943 0.19%
9 HOME DEPOT INC 1,213,690 98,260 2.71%
10 NXP SEMICONDUCTORS N V 1,151,770 76,224 2.10%
11 ISHARES TR 1,137,400 77,764 2.14%
12 CBRE GROUP INC 1,063,868 34,086 0.94%
13 Nomura Holdings Inc 1,036,200 7,284 0.20%
14 APPLE INC 892,305 82,922 2.29%
15 Marchex Inc 875,744 10,526 0.29%
16 ST JUDE MED INC 857,730 59,398 1.64%
17 HARLEY DAVIDSON INC 856,153 59,802 1.65%
18 UNION PAC CORP 836,260 83,417 2.30%
19 JETBLUE AIRWAYS CORP 790,020 8,572 0.24%
20 BORGWARNER INC 787,160 51,315 1.41%
21 Gastar Exploration, Ltd. 772,697 6,730 0.19%
22 CELGENE CORP 761,000 65,355 1.80%
23 EOG RES INC 731,240 85,453 2.36%
24 QUALCOMM INC 670,690 53,119 1.46%
25 HORIZON PHARMA PLC 667,503 10,560 0.29%
26 SCHLUMBERGER LTD 662,600 78,154 2.15%
27 CALLON PETE CO DEL 653,688 7,615 0.21%
28 INTERSIL CORP 650,316 9,722 0.27%
29 MIDDLEBY CORP 644,163 53,285 1.47%
30 INTEGRATED DEVICE TECHNOLOGY 637,862 9,861 0.27%
31 PACCAR INC 624,740 39,252 1.08%
32 PARKER HANNIFIN CORP 618,130 77,717 2.14%
33 HUNT J B TRANS SVCS INC 608,470 44,893 1.24%
34 ATRICURE INC 608,154 11,178 0.31%
35 Penn Virginia Corp 599,782 10,166 0.28%
36 Actua Corp (ACTA) 594,550 12,414 0.34%
37 WABTEC CORP 583,320 48,176 1.33%
38 MERITOR INC 581,340 7,581 0.21%
39 U S SILICA HLDGS INC 572,790 31,755 0.88%
40 HAWAIIAN HOLDINGS INC COM 554,525 7,603 0.21%
41 HAIN CELESTIAL GROUP INC 540,440 47,959 1.32%
42 SPLUNK INC 537,620 29,747 0.82%
43 RAMBUS INC DEL 534,302 7,641 0.21%
44 GRAPHIC PACKAGING HLDG CO 521,800 6,105 0.17%
45 XCERRA CORP 517,606 4,710 0.13%
46 SUMITOMO MITSUI FINL GROUP I 505,000 4,277 0.12%
47 STARBUCKS CORP 474,650 36,728 1.01%
48 VMWARE INC 467,960 45,303 1.25%
49 CHICAGO BRIDGE & IRON CO N V 465,920 31,776 0.88%
50 MONSANTO CO NEW 456,710 56,970 1.57%
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