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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
101 DICKS SPORTING GOODS INC 36,600 1,294,000 0.04%
102 CHENIERE ENERGY PARTNERS LP COMMON UNITS 51,300 1,337,000 0.04%
103 BONANZA CREEK ENERGY INC 255,415 1,346,000 0.04%
104 DST SYS INC DEL 11,840 1,350,000 0.04%
105 PENNTEX MIDSTREAM PARTNERS L 105,000 1,358,000 0.04%
106 CHENIERE ENERGY INC 36,840 1,372,000 0.04%
107 SONIC CORP 44,885 1,450,000 0.04%
108 ANSYS 15,690 1,451,000 0.04%
109 MARTIN MARIETTA MATLS INC 11,150 1,523,000 0.05%
110 ENERGEN CORP COM 37,200 1,525,000 0.05%
111 TRANSCANADA CORP 46,830 1,526,000 0.05%
112 Patterson UTI Energy Inc Com 102,800 1,550,000 0.05%
113 STATOIL ASA 112,700 1,573,000 0.05%
114 FASTENAL CO 38,810 1,584,000 0.05%
115 VALERO ENERGY PARTNERS LP 30,840 1,592,000 0.05%
116 MOOG INC CL A 26,330 1,596,000 0.05%
117 CHINA PETROLEUM & CHEMICAL COR ADR SPONSORED 27,910 1,674,000 0.05%
118 VARIAN MED SYS INC 20,930 1,691,000 0.05%
119 SPECTRA ENERGY PARTNERS LP 36,500 1,741,000 0.05%
120 CINTAS CORP 19,200 1,748,000 0.05%
121 ENI S P A 58,700 1,749,000 0.05%
122 COLUMBIA PIPELINE PARTNERS LP 102,700 1,795,000 0.05%
123 SOUTHWEST AIRLS CO 42,440 1,827,000 0.05%
124 GENTEX CORP 114,500 1,833,000 0.06%
125 UNITED RENTALS INC 25,290 1,835,000 0.06%
126 ENBRIDGE ENERGY PARTNERS L P 79,900 1,843,000 0.06%
127 CALUMET SPECIALTY PRODS PTNR 94,670 1,885,000 0.06%
128 IMS HEALTH HLDS INC 76,225 1,941,000 0.06%
129 MATTEL INC 72,360 1,966,000 0.06%
130 RITE AID CORP 271,160 2,126,000 0.06%
131 WEATHERFORD INTL PLC 254,200 2,133,000 0.06%
132 PLAINS ALL AMERN PIPELINE L 95,040 2,195,000 0.07%
133 DOMINION MIDSTREAM PARTNERS 73,618 2,257,000 0.07%
134 CARLISLE COS INC 25,645 2,274,000 0.07%
135 BOARDWALK PIPELINE PARTNERS UT LTD PARTNER 177,900 2,309,000 0.07%
136 CALLON PETE CO DEL 278,500 2,323,000 0.07%
137 RICE MIDSTREAM PARTNERS LP 172,230 2,323,000 0.07%
138 ALKERMES PLC 29,430 2,336,000 0.07%
139 ROYAL DUTCH SHELL PLC 51,960 2,379,000 0.07%
140 JETBLUE AIRWAYS CORP 105,526 2,390,000 0.07%
141 WILLIAMS PARTNERS L P NEW 86,600 2,412,000 0.07%
142 TESORO CORP 23,300 2,455,000 0.07%
143 ON SEMICONDUCTOR CORP 254,690 2,496,000 0.08%
144 VIPER ENERGY PARTNERS LP COM UNT RP INT 180,100 2,514,000 0.08%
145 WHITEWAVE FOODS CO 66,320 2,581,000 0.08%
146 SPECTRUM BRANDS HLDGS INC 25,670 2,613,000 0.08%
147 ADVANCE AUTO PARTS INC 18,280 2,751,000 0.08%
148 CADENCE DESIGN SYSTEM INC 132,640 2,760,000 0.08%
149 WR GRACE & CO 27,750 2,764,000 0.08%
150 VANTIV INC 59,270 2,811,000 0.08%
Page 3 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.