Atika Capital Management LLC Q3 2016 Filing

Filed November 14, 2016

Portfolio Value

$244.9B

Holdings

64

Report Date

Q3 2016

Filing Type

13F-HR

All Holdings (64 positions)

#StockSharesValue% PortfolioType
1
IWMISHARES TR
208,000$25.8B10.55%Put
2
GRA1EURGRACE W R & CO DEL NEW
173,000$12.8B5.21%Call
3
XBISPDR SERIES TRUST
170,000$11.3B4.60%Put
4
NVROEURNEVRO CORP
77,000$8.0B3.28%
5
GIGAMON INC
139,000$7.6B3.11%
6
ISRGINTUITIVE SURGICAL INC
9,500$6.9B2.81%
7
ADSKAUTODESK INC
90,000$6.5B2.66%
8
GW PHARMACEUTICALS PLC
49,000$6.5B2.66%
9
METAFACEBOOK INC
49,000$6.3B2.57%
10
MSFTMICROSOFT CORP
94,650$5.5B2.23%
11
MLMMARTIN MARIETTA MATLS INC
30,000$5.4B2.19%
12
RAPTOR PHARMACEUTICAL CORP
598,200$5.4B2.19%Call
13
SHIRE PLC
27,000$5.2B2.14%
14
BATRKUSDLIBERTY MEDIA CORP DELAWARE
300,000$5.2B2.13%
15
TESARO INC
50,000$5.0B2.05%
16
GKOSGLAUKOS CORP
128,400$4.8B1.98%
17
HORIZON PHARMA PLC
265,000$4.8B1.96%
18
DOOREURMASONITE INTL CORP NEW
75,000$4.7B1.90%
19
GOOGALPHABET INC
5,375$4.2B1.71%
20
EWEDWARDS LIFESCIENCES CORP
34,000$4.1B1.67%
21
DKSDICKS SPORTING GOODS INC
72,000$4.1B1.67%
22
AERIEURAERIE PHARMACEUTICALS INC
100,000$3.8B1.54%
23
STZCONSTELLATION BRANDS INC
20,500$3.4B1.39%
24
NFLXNETFLIX INC
34,150$3.4B1.37%
25
GLPGGALAPAGOS NV
52,000$3.4B1.37%
26
AMZNAMAZON COM INC
3,910$3.3B1.34%
27
BMRNBIOMARIN PHARMACEUTICAL INC
35,000$3.2B1.32%
28
MTNVAIL RESORTS INC
20,000$3.1B1.28%
29
BMC STK HLDGS INC
174,550$3.1B1.26%
30
ALKSALKERMES PLC
63,450$3.0B1.22%
31
BG3BIG 5 SPORTING GOODS CORP
212,000$2.9B1.18%
32
ALDER BIOPHARMACEUTICALS INC
88,000$2.9B1.18%
33
COLUCID PHARMACEUTICALS INC
75,000$2.9B1.17%
34
SHAKSHAKE SHACK INC
80,000$2.8B1.13%
35
EXASEXACT SCIENCES CORP
148,300$2.8B1.12%
36
2U INC
70,350$2.7B1.10%
37
SEMSELECT MED HLDGS CORP
189,000$2.6B1.04%
38
MEDIDATA SOLUTIONS INC
45,000$2.5B1.02%
39
MEDICINES CO
65,000$2.5B1.00%
40
RADIUS HEALTH INC
45,000$2.4B0.99%
41
TWXCHFTIME WARNER INC
30,000$2.4B0.98%
42
BIIBBIOGEN INC
7,500$2.3B0.96%
43
SPWHSPORTSMANS WHSE HLDGS INC
220,000$2.3B0.95%
44
VMCVULCAN MATLS CO
20,000$2.3B0.93%
45
RNGRINGCENTRAL INC
88,000$2.1B0.85%
46
ADEPTUS HEALTH INC
47,700$2.1B0.84%
47
GRUBHUB INC
47,500$2.0B0.83%
48
ACXIOM CORP
75,000$2.0B0.82%
49
DPZDOMINOS PIZZA INC
13,000$2.0B0.81%
50
ELFE L F BEAUTY INC
70,000$2.0B0.80%
51
ELLIE MAE INC
18,000$1.9B0.77%
52
LLYLILLY ELI & CO
23,000$1.8B0.75%Call
53
INC RESH HLDGS INC
36,000$1.6B0.66%
54
AFWALIGN TECHNOLOGY INC
17,000$1.6B0.65%
55
ALNYALNYLAM PHARMACEUTICALS INC
22,000$1.5B0.61%
56
TALEND S A
53,000$1.4B0.57%
57
OPHTHOTECH CORP
27,500$1.3B0.52%
58
EGHT8X8 INC NEW
82,000$1.3B0.52%
59
AXOVANT SCIENCES LTD
74,000$1.0B0.42%
60
CTRPUSDCTRIP COM INTL LTD
19,000$885.0M0.36%
61
ARRYEURARRAY BIOPHARMA INC
127,000$857.0M0.35%
62
NTNXNUTANIX INC
21,000$777.0M0.32%
63
EX9EXELIXIS INC
55,000$704.0M0.29%
64
ACADACADIA PHARMACEUTICALS INC
10,300$327.0M0.13%Call