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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 (2016Q2)
Original 13F HR (0001172661-16-003859) filed in 2016.08.15
#
Name
Shares
Value ($)
%
Options
Notes
1 SPDR S&P 500 ETF TR 112,500 23,566 10.10% Put
2 SPDR S&P 500 ETF TR 67,500 14,140 6.06% Put
3 ALEXION PHARMACEUTIC 2,500 292 0.13% Put
4 ALEXION PHARMACEUTIC 1,500 175 0.07% Put
5 UNITED THERAPEUTICS CORP DEL 18,400 1,949 0.83% Call
6 RAPTOR PHARMACEUTICAL CORP 276,100 1,482 0.63% Call
7 LILLY ELI & CO 15,000 1,181 0.51% Call
8 UNITED THERAPEUTICS CORP DEL 11,100 1,176 0.50% Call
9 RAPTOR PHARMACEUTICAL CORP 169,900 911 0.39% Call
10 WR GRACE & CO 11,100 813 0.35% Call
11 LILLY ELI & CO 9,000 709 0.30% Call
12 WALGREENS BOOTS ALLIANCE INC 7,300 608 0.26% Call
13 WR GRACE & CO 6,900 505 0.22% Call
14 WALGREENS BOOTS ALLIANCE INC 4,600 383 0.16% Call
15 ACADIA PHARMACEUTICALS INC COM 6,900 224 0.10% Call
16 ACADIA PHARMACEUTICALS INC COM 3,400 110 0.05% Call
17 SIX FLAGS ENTMT CORP NEW 103,750 6,012 2.58%
18 MARTIN MARIETTA MATLS INC 30,627 5,880 2.52%
19 WR GRACE & CO 70,630 5,171 2.22%
20 MASONITE INTL CORP NEW COM 72,235 4,778 2.05%
21 RAPTOR PHARMACEUTICAL CORP 848,880 4,558 1.95%
22 HORIZON PHARMA PLC 270,652 4,458 1.91%
23 ADEPTUS HEALTH INC 78,129 4,036 1.73%
24 AMAZON COM INC 5,625 4,025 1.72%
25 NEVRO CORP COM 52,811 3,895 1.67%
26 ALLERGAN PLC 15,626 3,611 1.55%
27 SIX FLAGS ENTMT CORP NEW 62,250 3,607 1.55%
28 MARTIN MARIETTA MATLS INC 18,373 3,528 1.51%
29 ULTA BEAUTY INC 14,376 3,503 1.50%
30 INTUITIVE SURGICAL INC 5,250 3,472 1.49%
31 GIGAMON INC 90,005 3,365 1.44%
32 WR GRACE & CO 42,370 3,102 1.33%
33 FIVE BELOW INC 65,632 3,046 1.30%
34 FACEBOOK INC 26,562 3,036 1.30%
35 AETNA INC NEW 23,751 2,901 1.24%
36 MASONITE INTL CORP NEW COM 43,415 2,871 1.23%
37 VULCAN MATLS CO 23,126 2,783 1.19%
38 RAPTOR PHARMACEUTICAL CORP 509,120 2,734 1.17%
39 HORIZON PHARMA PLC 162,348 2,674 1.15%
40 CONSTELLATION BRANDS INC 15,001 2,481 1.06%
41 NETFLIX INC 26,877 2,459 1.05%
42 ADEPTUS HEALTH INC 46,871 2,421 1.04%
43 AMAZON COM INC 3,375 2,415 1.03%
44 NEVRO CORP COM 31,689 2,337 1.00%
45 LIBERTY MEDIA CORP DEL 158,783 2,328 1.00%
46 ALLERGAN PLC 9,374 2,166 0.93%
47 SHAKE SHACK INC 58,124 2,117 0.91%
48 ULTA BEAUTY INC 8,624 2,101 0.90%
49 INTUITIVE SURGICAL INC 3,150 2,083 0.89%
50 O REILLY AUTOMOTIVE INC NEW 7,625 2,067 0.89%
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