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Institutional Investment Manager
Atika Capital Management LLC
Atika Capital Management LLC (CIK: 0001599731) incorporated in Delaware, located at 475 Tenth Avenue, 14th Floor, New York, NY. Institutional holdings reported to the SEC.

Institutional Holdings (2016Q4)
Portfolio Summary: 54 holdings with a total value of $167,959,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 AUTODESK 127,000 9,399,000 5.60%
2 LIBERTY BRAVES GR C 400,400 8,244,000 4.91%
3 MARTIN MARIETTA MATLS INC 34,000 7,532,000 4.48%
4 UNITEDHEALTH GROUP INC 37,000 5,922,000 3.53%
5 MICROSOFT CORP 90,000 5,593,000 3.33%
6 GIGAMON INC 122,650 5,587,000 3.33%
7 GW PHARMACEUTICALS PLC 47,998 5,364,000 3.19%
8 FACEBOOK INC 45,000 5,178,000 3.08%
9 UNITED CONTINENTAL H 70,000 5,101,000 3.04%
10 TESARO INC 36,000 4,841,000 2.88%
11 NETFLIX INC 38,000 4,704,000 2.80%
12 SUMMIT MATLS INC CL A 197,219 4,692,000 2.79%
13 GLAUKOS CORP 130,000 4,459,000 2.65%
14 NEVRO CORP 60,000 4,360,000 2.60%
15 ALPHABET INC 5,300 4,090,000 2.44%
16 EOG RES INC 40,000 4,044,000 2.41%
17 AMERICAN EXPRESS CO 54,000 4,000,000 2.38%
18 ADVANCE AUTO PARTS INC 22,500 3,806,000 2.27%
19 APACHE CORP 58,000 3,681,000 2.19%
20 AERIE PHARMACEUTICALS INC 96,500 3,653,000 2.17%
21 INCYTE 36,000 3,610,000 2.15%
22 NEXSTAR MEDIA GROUP INC 50,000 3,165,000 1.88%
23 ALLERGAN PLC 14,500 3,045,000 1.81%
24 MASONITE INTL CORP NEW COM 46,000 3,027,000 1.80%
25 CENTENE CORP DEL 52,000 2,939,000 1.75%
26 IMPINJ INC 71,500 2,527,000 1.50%
27 COLUCID PHARMACEUTICALS INC COM 68,400 2,490,000 1.48%
28 TIME WARNER INC 25,500 2,461,000 1.47%
29 MARATHON PETE CORP 46,000 2,316,000 1.38%
30 SPORTSMANS WAREHOUSE 245,000 2,300,000 1.37%
31 JPMORGAN CHASE & CO 25,000 2,157,000 1.28%
32 Acxiom Corp 75,000 2,010,000 1.20%
33 ADVANSIX INC 90,000 1,993,000 1.19%
34 2U, Inc. 66,050 1,992,000 1.19%
35 BIG 5 SPORTING GOODS CORP COM 110,000 1,908,000 1.14%
36 BMC STK HLDGS INC 97,000 1,892,000 1.13%
37 MEDIDATA SOLUTIONS INC 38,000 1,887,000 1.12%
38 CLOVIS ONCOLOGY INC 42,000 1,866,000 1.11%
39 SIENTRA INC 210,000 1,789,000 1.07%
40 SHAKE SHACK INC CL A 50,000 1,789,000 1.07%
41 ALKERMES PLC SHS 31,000 1,723,000 1.03%
42 ARRAY BIOPHARMA INC COM 190,000 1,670,000 0.99%
43 MORGAN STANLEY 38,000 1,605,000 0.96%
44 MEDICINES CO 44,000 1,494,000 0.89%
45 GALAPAGOS NV 23,000 1,476,000 0.88%
46 DOMINOS PIZZA (USD) 9,000 1,433,000 0.85%
47 EXELIXIS INC 80,000 1,193,000 0.71%
48 RINGCENTRAL INC 55,000 1,133,000 0.67%
49 VAIL RESORTS INC 6,500 1,049,000 0.62%
50 TRIPADVISOR INC 20,000 928,000 0.55% Call
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Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001172661-17-000734, filed 2017.02.14).

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.