Atika Capital Management LLC Q4 2017 Filing

Filed February 14, 2018

Portfolio Value

$258.7B

Holdings

62

Report Date

Q4 2017

Filing Type

13F-HR

All Holdings (62 positions)

#StockSharesValue% PortfolioType
1
BATRKUSDLIBERTY MEDIA CORP DELAWARE
483,000$10.7B4.15%
2
GSGOLDMAN SACHS GROUP INC
36,000$9.2B3.55%
3
MLMMARTIN MARIETTA MATLS INC
36,500$8.1B3.12%
4
AFWALIGN TECHNOLOGY INC
36,000$8.0B3.09%
5
METAFACEBOOK INC
45,000$7.9B3.07%
6
ANETEURARISTA NETWORKS INC
33,000$7.8B3.01%
7
MACMACERICH CO
117,000$7.7B2.97%Call
8
ADSKAUTODESK INC
72,000$7.5B2.92%
9
TTWOTAKE-TWO INTERACTIVE SOFTWAR
68,000$7.5B2.89%Put
10
ISRGINTUITIVE SURGICAL INC
20,000$7.3B2.82%
11
RNGRINGCENTRAL INC
135,000$6.5B2.53%
12
NFLXNETFLIX INC
33,000$6.3B2.45%
13
ABBVABBVIE INC
60,000$5.8B2.24%Call
14
ARNAEURARENA PHARMACEUTICALS INC
170,000$5.8B2.23%
15
TEAMATLASSIAN CORP PLC
125,000$5.7B2.20%
16
2U INC
85,000$5.5B2.12%
17
UNHUNITEDHEALTH GROUP INC
24,000$5.3B2.05%
18
SRPTSAREPTA THERAPEUTICS INC
92,000$5.1B1.98%
19
MSFTMICROSOFT CORP
56,000$4.8B1.85%
20
CTLTEURCATALENT INC
116,000$4.8B1.84%
21
ATVIEURACTIVISION BLIZZARD INC
74,700$4.7B1.83%
22
BLUEBIRD BIO INC
26,500$4.7B1.82%
23
FNDFLOOR & DECOR HLDGS INC
93,000$4.5B1.75%
24
AVEXIS INC
40,300$4.5B1.72%
25
ASIXADVANSIX INC
105,000$4.4B1.71%
26
AALAMERICAN AIRLS GROUP INC
79,000$4.1B1.59%
27
ICUIICU MED INC
19,000$4.1B1.59%
28
AMZNAMAZON COM INC
3,500$4.1B1.58%
29
GW PHARMACEUTICALS PLC
31,000$4.1B1.58%
30
AERIEURAERIE PHARMACEUTICALS INC
65,600$3.9B1.52%
31
BMYBRISTOL MYERS SQUIBB CO
63,700$3.9B1.51%Call
32
ELVANTHEM INC
16,500$3.7B1.44%
33
ESPRESPERION THERAPEUTICS INC NE
56,000$3.7B1.43%
34
ROKUROKU INC
68,000$3.5B1.36%
35
TPDTEMPUR SEALY INTL INC
55,000$3.4B1.33%Call
36
PORTOLA PHARMACEUTICALS INC
70,000$3.4B1.32%
37
EXASEXACT SCIENCES CORP
63,000$3.3B1.28%
38
AIMMUNE THERAPEUTICS INC
85,000$3.2B1.24%
39
ALNYALNYLAM PHARMACEUTICALS INC
25,000$3.2B1.23%
40
MAZOR ROBOTICS LTD
60,000$3.1B1.20%
41
MTNVAIL RESORTS INC
13,800$2.9B1.13%
42
RHT1EURRED HAT INC
24,000$2.9B1.11%
43
OREALTY INCOME CORP
50,000$2.9B1.10%Put
44
LUVSOUTHWEST AIRLS CO
42,000$2.7B1.06%
45
SIENUSDSIENTRA INC
184,000$2.6B1.00%
46
MCDMCDONALDS CORP
15,000$2.6B1.00%
47
HDBHDFC BANK LTD
25,000$2.5B0.98%
48
INGNINOGEN INC
21,000$2.5B0.97%
49
DALDELTA AIR LINES INC DEL
40,000$2.2B0.87%
50
ZOGENIX INC
54,000$2.2B0.84%
51
JPMJPMORGAN CHASE & CO
20,000$2.1B0.83%
52
RGNXREGENXBIO INC
60,000$2.0B0.77%
53
CGNXCOGNEX CORP
32,000$2.0B0.76%
54
VRTXVERTEX PHARMACEUTICALS INC
12,000$1.8B0.70%
55
FWONALIBERTY MEDIA CORP DELAWARE
50,000$1.7B0.66%
56
HRTXHERON THERAPEUTICS INC
90,000$1.6B0.63%
57
GLPGGALAPAGOS NV
15,500$1.5B0.56%
58
MARINUS PHARMACEUTICALS INC
150,000$1.2B0.47%Call
59
ALKSALKERMES PLC
21,000$1.1B0.44%
60
TRIPTRIPADVISOR INC
20,000$1.1B0.43%Call
61
SG7SAGE THERAPEUTICS INC
6,000$988.0M0.38%
62
GENOMIC HEALTH INC
17,000$582.0M0.22%Call