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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 (2016Q3)
Portfolio Summary: 372 holdings with a total value of $3,306,159,000.
#
Name
Shares
Value ($)
%
Options
Notes
151 POWER INTEGRATIONS INC COM 111,085 7,002,000 0.21%
152 SPECTRANETICS CORP 277,050 6,951,000 0.21%
153 MAGELLAN MIDSTREAM PRTNRS LP 97,880 6,924,000 0.21%
154 KRATON CORP COM 196,165 6,874,000 0.21%
155 NETFLIX INC 68,620 6,763,000 0.20%
156 SUNOCO LOGISTICS PRTNRS L P 237,740 6,754,000 0.20%
157 ANI PHARMACEUTICALS INC 100,615 6,676,000 0.20%
158 FABRINET SHS 149,025 6,645,000 0.20%
159 FRANKLIN ELEC INC COM 158,993 6,473,000 0.20%
160 MPLX LP 183,529 6,214,000 0.19%
161 INTUITIVE SURGICAL INC 8,350 6,052,000 0.18%
162 PANERA BREAD CO 30,397 5,919,000 0.18%
163 DICKS SPORTING GOODS INC 103,710 5,882,000 0.18%
164 TOTAL S A 118,440 5,650,000 0.17%
165 Callidus Software Inc 306,080 5,617,000 0.17%
166 WESTERN GAS PARTNERS LP 100,785 5,548,000 0.17%
167 Del Taco Restaurants, Inc. 459,770 5,480,000 0.17%
168 FISERV INC 54,694 5,440,000 0.16%
169 AMEDISYS INC COM 114,510 5,432,000 0.16%
170 SOUTHWESTERN ENERGY CO 391,600 5,420,000 0.16%
171 CABOT OIL & GAS CORP 206,770 5,335,000 0.16%
172 ENTEGRIS INC 304,245 5,300,000 0.16%
173 WASTE CONNECTIONS INC 69,590 5,198,000 0.16%
174 CONOCOPHILLIPS 119,060 5,176,000 0.16%
175 LKQ CORP 144,539 5,125,000 0.16%
176 PENUMBRA INC COM 67,335 5,117,000 0.15%
177 ARAMARK 132,987 5,057,000 0.15%
178 NV5 GLOBAL INC COM 154,332 4,986,000 0.15%
179 NEVRO CORP COM 47,460 4,954,000 0.15%
180 ISHARES TR 200,000 4,792,000 0.14%
181 MIDDLEBY CORP 38,745 4,790,000 0.14%
182 SPLUNK INC 81,490 4,782,000 0.14%
183 BMC STK HLDGS INC 268,905 4,768,000 0.14%
184 ALIGN TECHNOLOGY INC 50,630 4,747,000 0.14%
185 XYLEM INC 89,221 4,680,000 0.14%
186 SPECTRUM BRANDS HLDGS INC 33,220 4,574,000 0.14%
187 VASCULAR SOLUTIONS 93,597 4,514,000 0.14%
188 CROWN HOLDINGS INC 78,644 4,490,000 0.14%
189 EnLink Midstream Partners LP 253,300 4,486,000 0.14%
190 XILINX INC 82,370 4,476,000 0.14%
191 VONAGE HLDGS CORP 666,800 4,408,000 0.13%
192 RICE MIDSTREAM PARTNERS LP 178,970 4,342,000 0.13%
193 FIDELITY NATIONAL FINANCIAL 112,999 4,171,000 0.13%
194 ONEOK PARTNERS LP 103,120 4,120,000 0.12%
195 BALL CORP 50,260 4,119,000 0.12%
196 AGNICO EAGLE MINES LTD 75,000 4,064,000 0.12%
197 LINCOLN ELEC HLDGS INC 64,080 4,013,000 0.12%
198 TARGA RES CORP 81,600 4,007,000 0.12%
199 GLOBAL PMTS INC 51,777 3,974,000 0.12%
200 PULTE GROUP INC 197,185 3,952,000 0.12%
Page 4 of 8

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001106832-16-000008, filed 2016.11.15).

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.