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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
151 CANADIAN NAT RES LTD 123,750 5,681 0.16%
152 MISTRAS GROUP INC 229,785 5,634 0.16%
153 Western Gas Equity Partners, L.P. 89,600 5,618 0.15%
154 INNOPHOS HOLDINGS INC 95,325 5,488 0.15%
155 EQT MIDSTREAM PARTNERS LP 55,980 5,416 0.15%
156 FISERV INC 89,474 5,397 0.15%
157 ENERGEN CORP COM 60,090 5,341 0.15%
158 ASPEN TECHNOLOGY COM USD0.10 114,825 5,328 0.15%
159 The Ryland Group Inc (Acquired 10/1/15) 131,300 5,178 0.14%
160 MICROSEMI CORP 191,800 5,133 0.14%
161 WESTERN GAS PARTNERS LP 65,380 5,000 0.14%
162 UNIT CORP COM 70,290 4,838 0.13%
163 STATOIL ASA 153,600 4,735 0.13%
164 XCERRA CORP 517,606 4,710 0.13%
165 NXSTAGE MED INC COM 325,950 4,684 0.13%
166 LENNAR 111,500 4,681 0.13%
167 DEPOMED INC 336,054 4,671 0.13%
168 ENERGY TRANSFER L P 76,380 4,502 0.12%
169 SPANSION INC 212,825 4,484 0.12%
170 COGENT COMMUNICATIONS HLDGS IN COM NEW 128,672 4,446 0.12%
171 BONANZA CREEK ENERGY INC 76,015 4,347 0.12%
172 ACCESS MIDSTREAM PARTNERS LP 68,140 4,330 0.12%
173 PHYSICIANS RLTY TR 298,350 4,293 0.12%
174 SONIC CORP 194,025 4,284 0.12%
175 SUMITOMO MITSUI FINL GROUP I 505,000 4,277 0.12%
176 SAIA INC COM 96,800 4,252 0.12%
177 PHILLIPS 66 52,860 4,252 0.12%
178 VALERO ENERGY CORP NEW 83,920 4,204 0.12%
179 SYNAPTICS INC 46,150 4,183 0.12%
180 UNDER ARMOUR INC 69,000 4,105 0.11%
181 TUESDAY MORNING CORP 228,380 4,070 0.11%
182 SEMGROUP CORP CL A 51,060 4,026 0.11%
183 INTUITIVE SURGICAL INC 9,750 4,015 0.11%
184 MOTORCAR PTS AMER INC 164,083 3,995 0.11%
185 CHINA PETROLEUM & CHEMICAL COR ADR SPONSORED 41,660 3,959 0.11%
186 DEVON ENERGY CORP NEW 48,920 3,884 0.11%
187 MARKWEST ENERGY PARTNERS LP 54,230 3,882 0.11%
188 PETROCHINA CO LTD 30,200 3,792 0.10%
189 FERRO CORP 294,294 3,696 0.10%
190 OILTANKING PARTNERS LP 38,620 3,647 0.10%
191 STERICYCLE INC 30,600 3,624 0.10%
192 TESORO LOGISTICS LP 49,010 3,597 0.10%
193 MODINE MFG CO COM 221,175 3,481 0.10%
194 RENTRAK CORP 66,270 3,476 0.10%
195 THE PROVIDENCE SERVICE CORP 93,047 3,405 0.09%
196 TARGA RES CORP 23,900 3,336 0.09%
197 CHEVRON CORP NEW 25,170 3,286 0.09%
198 Targa Resources Partners LP 45,070 3,241 0.09%
199 TRIMBLE INC 84,800 3,133 0.09%
200 VERTEX PHARMACEUTICALS INC 31,830 3,014 0.08%
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