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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
51 MICROSOFT CORP 4,000 205,000 0.01%
52 SEMGROUP CORP CL A 6,400 208,000 0.01%
53 NABORS INDUSTRIES LTD 22,400 225,000 0.01%
54 ILLINOIS TOOL WKS INC 2,170 226,000 0.01%
55 PFIZER INC 6,500 229,000 0.01%
56 SOCIEDAD QUIMICA Y MINERA DE 9,800 242,000 0.01%
57 COMPANHIA DE SANEAMENTO BASI 29,300 263,000 0.01%
58 AUTOMATIC DATA PROCESSING IN 3,000 276,000 0.01%
59 PACCAR INC 5,750 298,000 0.01%
60 AMGEN INC 2,000 304,000 0.01%
61 BORGWARNER INC 10,340 305,000 0.01%
62 AMERICAN EXPRESS CO 5,175 314,000 0.01%
63 PROCTER AND GAMBLE CO 3,800 322,000 0.01%
64 CITIGROUPINC 8,010 340,000 0.01%
65 QUALCOMM INC 6,950 372,000 0.01%
66 HARLEY DAVIDSON INC 8,363 379,000 0.01%
67 ROWAN COMPANIES PLC 21,880 386,000 0.01%
68 DRIL-QUIP INC 6,900 403,000 0.01%
69 COCA COLA CO 10,020 454,000 0.01%
70 MURPHY USA INC COM 6,145 456,000 0.01%
71 TJX COS INC NEW 6,840 528,000 0.02%
72 TIVO INC 53,720 532,000 0.02%
73 HELMERICH & PAYNE INC 8,800 591,000 0.02%
74 ISHARES SILVER TR 34,200 611,000 0.02%
75 MONSANTO CO NEW 6,120 633,000 0.02%
76 BOEING CO 5,000 649,000 0.02%
77 MYRIAD GENETICS INC 22,760 696,000 0.02%
78 F5 NETWORKS INC 6,380 726,000 0.02%
79 RANGE RES CORP 16,990 733,000 0.02%
80 CNOOC LTD 6,080 758,000 0.02%
81 PHILLIPS 66 9,610 762,000 0.02%
82 PRA GROUP INC 31,710 765,000 0.02%
83 STATOIL ASA 47,110 815,000 0.03%
84 SPECTRA ENERGY PARTNERS LP 17,715 836,000 0.03%
85 PAYCHEX INC 14,740 877,000 0.03%
86 RPM INTL INC 20,240 1,011,000 0.03%
87 WATERS CORP 7,620 1,072,000 0.03%
88 SHELL MIDSTREAM PARTNERS L P 32,345 1,093,000 0.03%
89 TALLGRASS ENERGY PAR 23,881 1,099,000 0.04%
90 RPC INC 74,600 1,159,000 0.04%
91 ISHARES TR 41,700 1,180,000 0.04%
92 BONANZA CREEK ENERGY INC 600,800 1,208,000 0.04%
93 NUSTAR ENERGY LP 24,300 1,210,000 0.04%
94 SONIC CORP 44,885 1,214,000 0.04%
95 PETROCHINA CO LTD 18,450 1,253,000 0.04%
96 KAR AUCTION SVCS INC 31,800 1,327,000 0.04%
97 MOOG INC CL A 26,330 1,420,000 0.05%
98 ANSYS 15,690 1,424,000 0.05%
99 BANK AMER CORP 110,000 1,460,000 0.05%
100 GENESIS ENERGY LP COM UNITS NPV 38,690 1,485,000 0.05%
Page 2 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.