Dark
Light
System
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 SIX FLAGS ENTMT CORP NEW 103,750 6,012 2.58%
4 MARTIN MARIETTA MATLS INC 30,627 5,880 2.52%
5 WR GRACE & CO 70,630 5,171 2.22%
6 MASONITE INTL CORP NEW COM 72,235 4,778 2.05%
7 RAPTOR PHARMACEUTICAL CORP 848,880 4,558 1.95%
8 HORIZON PHARMA PLC 270,652 4,458 1.91%
9 Adeptus Health Inc 78,129 4,036 1.73%
10 AMAZON COM INC 5,625 4,025 1.72%
11 NEVRO CORP 52,811 3,895 1.67%
12 ALLERGAN PLC 15,626 3,611 1.55%
13 SIX FLAGS ENTMT CORP NEW 62,250 3,607 1.55%
14 MARTIN MARIETTA MATLS INC 18,373 3,528 1.51%
15 ULTA BEAUTY INC 14,376 3,503 1.50%
16 INTUITIVE SURGICAL INC 5,250 3,472 1.49%
17 GIGAMON INC 90,005 3,365 1.44%
18 WR GRACE & CO 42,370 3,102 1.33%
19 FIVE BELOW INC COM 65,632 3,046 1.30%
20 FACEBOOK INC 26,562 3,036 1.30%
21 AETNA INC NEW 23,751 2,901 1.24%
22 MASONITE INTL CORP NEW COM 43,415 2,871 1.23%
23 VULCAN MATLS CO 23,126 2,783 1.19%
24 RAPTOR PHARMACEUTICAL CORP 509,120 2,734 1.17%
25 HORIZON PHARMA PLC 162,348 2,674 1.15%
26 CONSTELLATION BRANDS INC 15,001 2,481 1.06%
27 NETFLIX INC 26,877 2,459 1.05%
28 Adeptus Health Inc 46,871 2,421 1.04%
29 AMAZON COM INC 3,375 2,415 1.03%
30 NEVRO CORP 31,689 2,337 1.00%
31 LIBERTY BRAVES GR C 158,783 2,328 1.00%
32 ALLERGAN PLC 9,374 2,166 0.93%
33 SHAKE SHACK INC CL A 58,124 2,117 0.91%
34 ULTA BEAUTY INC 8,624 2,101 0.90%
35 INTUITIVE SURGICAL INC 3,150 2,083 0.89%
36 O REILLY AUTOMOTIVE INC NEW 7,625 2,067 0.89%
37 GLAUKOS CORP 70,629 2,060 0.88%
38 GIGAMON INC 53,995 2,019 0.86%
39 UNITED THERAPEUTICS 18,400 1,949 0.83% Call
40 BMC STK HLDGS INC 108,052 1,925 0.82%
41 ALDER BIOPHARMACEUTICALS INC 75,941 1,896 0.81%
42 FIVE BELOW INC COM 39,368 1,827 0.78%
43 FACEBOOK INC 15,938 1,821 0.78%
44 AETNA INC NEW 14,249 1,740 0.75%
45 VULCAN MATLS CO 13,874 1,670 0.72%
46 ADVANCED DRAIN SYS INC DEL 59,384 1,625 0.70%
47 ALKERMES PLC SHS 37,502 1,621 0.69%
48 MEDIDATA SOLUTIONS INC 34,376 1,611 0.69%
49 EAGLE MATERIALS INC 20,313 1,567 0.67%
50 TIME WARNER INC 20,626 1,517 0.65%
Page 1 of 3