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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 (2015Q1)
Portfolio Summary: 355 holdings with a total value of $4,146,716,000.
#
Name
Shares
Value ($)
%
Options
Notes
301 CAMERON INTERNATIONAL COMPANY 16,770 757,000 0.02%
302 Dentsply Intl Inc 14,800 753,000 0.02%
303 BOEING CO 5,000 750,000 0.02%
304 HARLEY DAVIDSON INC 11,703 711,000 0.02%
305 AMERICAN EXPRESS CO 8,970 701,000 0.02%
306 TIVO INC 61,720 655,000 0.02%
307 QUALCOMM INC 8,950 621,000 0.01%
308 SPDR S&P 500 ETF TR 3,000 619,000 0.01%
309 NABORS INDUSTRIES LTD 44,800 612,000 0.01%
310 PERRIGO CO PLC 3,480 576,000 0.01%
311 RICE ENERGY INCORPORATED 25,470 554,000 0.01%
312 AMAZON COM INC 1,490 554,000 0.01%
313 ISHARES SILVER TR 34,200 545,000 0.01%
314 HUNT J B TRANS SVCS INC 6,000 512,000 0.01%
315 TJX COS INC NEW 6,840 479,000 0.01%
316 MURPHY OIL 10,260 478,000 0.01%
317 DRIL-QUIP INC 6,900 472,000 0.01%
318 MICHAEL KORS HLDGS LTD 6,900 454,000 0.01%
319 LINCOLN ELEC HLDGS INC 6,700 438,000 0.01%
320 COSTCO WHSL CORP NEW 2,800 424,000 0.01%
321 CITIGROUPINC 8,010 413,000 0.01%
322 MURPHY USA INC COM 5,545 401,000 0.01%
323 INTEL CORP 12,330 386,000 0.01%
324 ULTRA PETROLEUM CORP 23,410 366,000 0.01%
325 TRANSOCEAN LTD 23,200 340,000 0.01%
326 CONSOL ENERGY INC 11,830 330,000 0.01%
327 WHOLE FOODS MKT INC 6,220 324,000 0.01%
328 ISHARES RUSSELL 2000 GROWTH ETF 2,130 323,000 0.01%
329 AMGEN INC 2,000 320,000 0.01%
330 CALLON PETE CO DEL 41,700 311,000 0.01%
331 PROCTER AND GAMBLE CO 3,800 311,000 0.01%
332 UNIT CORP COM 10,030 281,000 0.01%
333 GENESEE AND WYOMING INC INC CL A 2,750 265,000 0.01%
334 ALLERGAN PLC 882 262,000 0.01%
335 AUTOMATIC DATA PROCESSING IN 3,000 257,000 0.01%
336 PFIZER INC 6,500 226,000 0.01%
337 ILLINOIS TOOL WKS INC 2,170 211,000 0.01%
338 CUMMINS INC 1,500 208,000 0.01%
339 TRANSDIGM GROUP INC 870 190,000 0.00%
340 MICROSOFT CORP 4,000 163,000 0.00%
341 PEABODY ENERGY CORP 32,390 159,000 0.00%
342 PEPSICO INC 1,600 153,000 0.00%
343 CISCO SYS INC 5,000 138,000 0.00%
344 GOODRICH PETE CORP 37,145 132,000 0.00%
345 ISHARES NASDAQ BIOTECHNOLOGY ETF 230 128,000 0.00%
346 DEERE & CO 1,400 123,000 0.00%
347 CATERPILLAR INC 1,500 120,000 0.00%
348 ABBVIE INC 1,800 105,000 0.00%
349 ABBOTT LABS 1,800 83,000 0.00%
350 MCDONALDS CORP 800 78,000 0.00%
Page 7 of 8

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001106832-15-000002, filed 2015.05.15).

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.