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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 (2014Q1)
Original 13F HR (0001106832-14-000002) filed in 2014.05.20
#
Name
Shares
Value ($)
%
Options
Notes
251 SCHLUMBERGER LTD 105,980 10,333 0.29%
252 CARRIZO OIL & GAS INC 197,760 10,572 0.30%
253 PLAINS ALL AMERN PIPELINE L 193,570 10,670 0.30%
254 ATRICURE INC 568,222 10,688 0.30%
255 HORIZON PHARMA PLC 710,928 10,749 0.31%
256 ROYAL DUTCH SHELL PLC 147,120 10,749 0.31%
257 CHENIERE ENERGY INC 197,100 10,909 0.31%
258 Actua Corp (ACTA) 567,950 11,598 0.33%
259 PACWEST BANCORP DEL COM 271,790 11,690 0.33%
260 TOTAL S A 194,100 12,733 0.36%
261 Penn Virginia Corp 742,957 12,994 0.37%
262 EXXON MOBIL CORP 136,600 13,343 0.38%
263 LIGAND PHARMACEUTICALS INC 236,646 15,919 0.45%
264 ILLUMINA INC 108,900 16,189 0.46%
265 BP PLC 339,200 16,316 0.46%
266 ENTERPRISE PRODS PARTNERS L 284,450 19,729 0.56%
267 U S SILICA HLDGS INC 572,790 21,863 0.62%
268 ANSYS 373,350 28,755 0.82%
269 Intuit Inc 161,460 29,860 0.85%
270 TERADATA CORP DEL 616,330 30,317 0.86%
271 STRATASYS LTD 293,780 31,167 0.89%
272 SPLUNK INC 456,340 32,624 0.93%
273 AMAZON COM INC 101,000 33,973 0.97%
274 CITIGROUPINC 728,910 34,696 0.99%
275 CBRE GROUP INC 1,338,338 36,711 1.04%
276 VMWARE INC 342,140 36,958 1.05%
277 QUALCOMM INC 476,670 37,590 1.07%
278 PRICELINE GRP INC 31,600 37,664 1.07%
279 FLEETCOR TECHNOLOGIES INC 331,730 38,182 1.09%
280 WABTEC CORP 499,620 38,721 1.10%
281 CHICAGO BRIDGE & IRON CO N V 450,808 39,288 1.12%
282 PFIZER INC 1,253,009 40,247 1.14%
283 BIOGEN INC 134,770 41,222 1.17%
284 APPLE INC 79,759 42,810 1.22%
285 NXP SEMICONDUCTORS N V 746,900 43,925 1.25%
286 HAIN CELESTIAL GROUP INC 516,180 47,194 1.34%
287 RANGE RES CORP 611,210 50,712 1.44%
288 MASTERCARD INCORPORATED 695,940 51,987 1.48%
289 PACCAR INC 772,470 52,095 1.48%
290 PERKINELMER INC 1,156,300 52,103 1.48%
291 UNION PAC CORP 320,240 60,096 1.71%
292 HARLEY DAVIDSON INC 910,373 60,640 1.72%
293 SHERWIN WILLIAMS CO 310,479 61,205 1.74%
294 MIDDLEBY CORP 232,191 61,347 1.74%
295 MICHAEL KORS HLDGS LTD 687,000 64,076 1.82%
296 ORACLE CORP 1,600,100 65,460 1.86%
297 HUNT J B TRANS SVCS INC 911,950 65,587 1.86%
298 GILEAD SCIENCES INC 925,970 65,614 1.87%
299 STARBUCKS CORP 899,600 66,013 1.88%
300 BLACKROCK INC 211,857 66,625 1.89%
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