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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 (2017Q1)
Portfolio Summary: 62 holdings with a total value of $204,276,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 LIBERTY MEDIA CORP DEL 460,000 10,879,000 5.33%
2 SPDR SER TR 142,000 9,844,000 4.82% Put
3 AUTODESK INC 112,600 9,736,000 4.77%
4 FACEBOOK INC 67,000 9,518,000 4.66%
5 NEVRO CORP COM 67,200 6,296,000 3.08%
6 MARTIN MARIETTA MATLS INC 28,000 6,111,000 2.99%
7 AMAZON COM INC 6,750 5,984,000 2.93%
8 NETFLIX INC 36,000 5,321,000 2.60%
9 INCYTE CORP 36,000 4,812,000 2.36%
10 ALLERGAN PLC 19,500 4,659,000 2.28%
11 MICROSOFT CORP 70,000 4,611,000 2.26%
12 GLAUKOS CORP 88,000 4,514,000 2.21%
13 AERIE PHARMACEUTICALS INC COM 95,000 4,308,000 2.11%
14 TESARO INCORPORATED 28,000 4,308,000 2.11%
15 INTUITIVE SURGICAL INC 5,200 3,985,000 1.95%
16 UNITEDHEALTH GROUP INC 24,000 3,937,000 1.93%
17 ALIGN TECHNOLOGY INC 34,000 3,900,000 1.91%
18 CENTENE CORP DEL 54,000 3,848,000 1.88%
19 MEDICINES CO 76,000 3,716,000 1.82%
20 HDFC BANK LTD 49,000 3,686,000 1.80%
21 GW PHARMACEUTICALS PLC 30,000 3,629,000 1.78%
22 MASONITE INTL CORP NEW COM 44,400 3,519,000 1.72%
23 ARISTA NETWORKS INC 26,000 3,439,000 1.68%
24 CLOVIS ONCOLOGY INC 50,000 3,184,000 1.56%
25 2U, Inc. 80,000 3,173,000 1.55%
26 ACADIA COMPANY COM 72,000 3,139,000 1.54%
27 ACTIVISION BLIZZARD INC 62,000 3,091,000 1.51%
28 UNITED CONTL HLDGS INC 41,400 2,925,000 1.43%
29 NEXSTAR MEDIA GROUP INC 41,500 2,912,000 1.43%
30 CALITHERA BIOSCIENCES INCORPORATED 252,000 2,910,000 1.42%
31 SUMMIT MATLS INC CL A 115,000 2,841,000 1.39%
32 RINGCENTRAL INC 100,000 2,830,000 1.39%
33 Acxiom Corp 98,700 2,810,000 1.38%
34 VAIL RESORTS INC 14,500 2,782,000 1.36%
35 VANECK ETF TRUST 120,000 2,738,000 1.34%
36 SHOPIFY INC 40,000 2,723,000 1.33%
37 REGENERON PHARMACEUTICALS 7,000 2,713,000 1.33%
38 ZILLOW GROUP INC 80,000 2,694,000 1.32%
39 PTC INC 48,000 2,523,000 1.24%
40 BMC STK HLDGS INC 107,000 2,418,000 1.18%
41 EPAM SYS INC 32,000 2,417,000 1.18%
42 ALBEMARLE CORP 22,000 2,324,000 1.14%
43 ACADIA PHARMACEUTICALS INC COM 65,200 2,242,000 1.10%
44 GALAPAGOS NV 25,800 2,224,000 1.09%
45 JAZZ PHARMACEUTICALS PLC 15,000 2,177,000 1.07%
46 SIENTRA INC 250,000 2,105,000 1.03%
47 ABBVIE INC 30,000 1,954,000 0.96% Put
48 BLUEBIRD BIO INC COM 19,000 1,727,000 0.85%
49 EXELIXIS INC 75,000 1,625,000 0.80%
50 ARRAY BIOPHARMA INC 175,000 1,564,000 0.77%
Page 1 of 2

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001172661-17-001210, filed 2017.05.15).

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.