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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 (2017Q1)
Original 13F HR (0001106832-17-000003) filed in 2017.05.15
#
Name
Shares
Value ($)
%
Options
Notes
101 DIEBOLD NXDF INC 489,750 15,035 0.47%
102 DIGITALGLOBE INC 189,855 6,218 0.19%
103 DISNEY WALT CO 2,000 227 0.01%
104 DOMINION MIDSTREAM PARTNERS 87,606 2,799 0.09%
105 DORMAN PRODUCTS INC 92,770 7,619 0.24%
106 DST SYS INC DEL 11,840 1,450 0.05%
107 E TRADE FINANCIAL CORP 116,935 4,080 0.13%
108 EDWARDS LIFESCIENCES CORP 175,704 16,528 0.52%
109 ELECTRONIC ARTS INC 353,968 31,687 0.99%
110 EMERGE ENERGY SVCS LP 306,218 4,241 0.13%
111 ENBRIDGE INC 9,980 418 0.01%
112 ENCANA CORP 541,235 6,338 0.20%
113 ENERGEN CORP COM 91,650 4,989 0.16%
114 ENERGY TRANSFER L P 93,300 1,841 0.06%
115 ENERGY TRANSFER PRTNRS L P 229,656 8,387 0.26%
116 ENI S P A 157,840 5,166 0.16%
117 ENSCO PLC 310,490 2,779 0.09%
118 ENTERPRISE PRODS PARTNERS L 690,120 19,054 0.60%
119 EOG RES INC 269,046 26,245 0.82%
120 EQT MIDSTREAM PARTNERS LP 28,195 2,168 0.07%
121 EXELIXIS INC 540,570 11,714 0.37%
122 EXXON MOBIL CORP 96,640 7,925 0.25%
123 EnLink Midstream Partners LP 192,200 3,517 0.11%
124 F5 NETWORKS INC 33,850 4,826 0.15%
125 FACEBOOK INC 201,102 28,567 0.90%
126 FAIRMOUNT SANTROL HLDGS INC 368,925 2,704 0.08%
127 FASTENAL CO 38,810 1,999 0.06%
128 FEDEX CORP 174,342 34,023 1.07%
129 FERRARI N V 1,725 128 0.00%
130 FIBROGEN INC 143,090 3,527 0.11%
131 FINANCIAL ENGINES INC 260,968 11,365 0.36%
132 FIRST DATA CORP NEW 320,410 4,966 0.16%
133 FISERV INC 52,694 6,076 0.19%
134 FIVE9 INC 429,124 7,063 0.22%
135 FLEETCOR TECHNOLOGIES INC 71,872 10,884 0.34%
136 FLIR SYS INC 104,040 3,775 0.12%
137 FMC 78,440 5,459 0.17%
138 FORTINET INC 68,610 2,631 0.08%
139 GALAPAGOS NV 6,075 524 0.02%
140 GALLAGHER ARTHUR J & CO 93,610 5,293 0.17%
141 GENERAL ELECTRIC CO 83,058 2,475 0.08%
142 GENESEE AND WYOMING INC INC CL A 2,750 187 0.01%
143 GENTEX CORP 114,500 2,442 0.08%
144 GILEAD SCIENCES INC 15,250 1,036 0.03%
145 GOLDCORP INC NEW 85,000 1,240 0.04%
146 GRAND CANYON ED INC 243,915 17,467 0.55%
147 GREEN DOT CORP CL A 366,945 12,241 0.38%
148 GTT COMMUNICATIONS INC COM 337,362 8,215 0.26%
149 HALLIBURTON CO 219,690 10,811 0.34%
150 HARLEY DAVIDSON INC 8,363 506 0.02%
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