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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
201 FISERV INC 52,694 6,076 0.19%
202 DERMIRA INC COM 179,616 6,127 0.19%
203 AZENTA INC COM 274,565 6,150 0.19%
204 HOLOGIC INC 144,610 6,153 0.19%
205 DIGITALGLOBE INC 189,855 6,218 0.19%
206 PROASSURANCE CORP. 261,065 6,315 0.20%
207 ENCANA CORP 541,235 6,338 0.20%
208 BAKER HUGHES INC 106,390 6,364 0.20%
209 WASTE CONNECTIONS INC 74,900 6,608 0.21%
210 CALLON PETE CO DEL 505,910 6,658 0.21%
211 CONCHO RESOURCES 52,600 6,751 0.21%
212 INTEGRA LIFESCIENCES HLDGS CP COM NEW 161,053 6,785 0.21%
213 CLOVIS ONCOLOGY INC 106,665 6,791 0.21%
214 CBOE HLDGS INC 85,245 6,911 0.22%
215 APACHE CORP 134,760 6,925 0.22%
216 XPERI CORP 205,260 6,969 0.22%
217 FIVE9 INC 429,124 7,063 0.22%
218 WIX COM LTD 104,330 7,084 0.22%
219 ACADIA PHARMACEUTICALS INC COM 206,980 7,116 0.22%
220 8X8 INC NEW COM 467,141 7,124 0.22%
221 NEKTAR THERAPEUTICS COM 306,760 7,200 0.23%
222 BARRACUDA NETWORKS INC 315,696 7,296 0.23%
223 ROGERS CORP COM 85,385 7,332 0.23%
224 CIMAREX ENERGY 61,500 7,349 0.23%
225 LOGITECH INTL S A 232,445 7,408 0.23%
226 OSHKOSH CORP 110,150 7,555 0.24%
227 TRINSEO S A 112,660 7,559 0.24%
228 DORMAN PRODUCTS INC 92,770 7,619 0.24%
229 BRINKS CO 143,990 7,696 0.24%
230 MERITOR INC 453,600 7,770 0.24%
231 CONOCOPHILLIPS 156,420 7,801 0.24%
232 EXXON MOBIL CORP 96,640 7,925 0.25%
233 ISHARES TR 127,500 7,942 0.25%
234 VERINT SYS INC 183,555 7,962 0.25%
235 METHANEX CORP 170,070 7,976 0.25%
236 INPHI CORPORATION 165,605 8,085 0.25%
237 SOTHEBYS 180,005 8,187 0.26%
238 TOPBUILD CORP 174,310 8,193 0.26%
239 K2M GROUP HLDGS INC COM 400,308 8,210 0.26%
240 GTT COMMUNICATIONS INC COM 337,362 8,215 0.26%
241 KLX INC COM 184,525 8,248 0.26%
242 TIVITY HEALTH INC COM 284,875 8,290 0.26%
243 WEATHERFORD INTL PLC 1,252,620 8,330 0.26%
244 ENERGY TRANSFER PRTNRS L P 229,656 8,387 0.26%
245 WAGEWORKS INC COM 117,145 8,470 0.27%
246 PNC FINL SVCS GROUP INC 70,600 8,489 0.27%
247 BUILDERS FIRSTSOURCE 571,680 8,518 0.27%
248 ALLEGHENY TECHNOLOGIES INC 474,835 8,528 0.27%
249 STIFEL FINANCIAL CP 173,670 8,716 0.27%
250 RBC BEARINGS INC 90,188 8,756 0.27%
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