EdgeMarket › What Atika Capital Management Llc reported owning

What Atika Capital Management Llc reported owning

As filed on Form 13F for the quarter ending 2026-03-31, up to 45 days after that date. Long-only US-listed equity — shorts, bonds, cash and non-US listings are not on the form, so this is one leg of the book, not the book.

Reported value

796.4M

Positions

60

Quarter

2026-03-31

Shown below

50
largest by value
holdingvalue% of booksharesprice1y
VRT
Vertiv Holdings Co
166.9M21.0%666.1K261.95+105.4%
LLY
ELI LILLY & Co
37.8M4.7%41.1K1,255.40+78.0%
ISRG
INTUITIVE SURGICAL INC
26.4M3.3%57.2K378.81-21.2%
ECHO
EchoStar CORP
21.3M2.7%182.0K86.81+214.0%
STX
Seagate Technology Holdings plc
21.0M2.6%53.5K850.00+436.6%
MTZ
MASTEC INC
18.5M2.3%57.6K266.26+54.3%
NFLX
NETFLIX INC
17.3M2.2%180.0K79.59-34.4%
CIEN
CIENA CORP
16.9M2.1%43.7K395.79+356.8%
BWXT
BWX Technologies, Inc.
16.9M2.1%82.5K156.78-4.1%
unmapped CUSIP 88088110715.8M2.0%300.0K
TEVA
TEVA PHARMACEUTICAL INDUSTRIES LTD
14.4M1.8%477.0K37.34+112.0%
NET
Cloudflare, Inc.
13.4M1.7%65.0K293.14+51.7%
GOOG
Alphabet Inc.
12.4M1.6%43.2K341.75+70.7%
COGT
Cogent Biosciences, Inc.
11.3M1.4%293.2K36.73+209.6%
ORKA
Oruka Therapeutics, Inc.
11.3M1.4%229.9K107.96+649.7%
DNTH
Dianthus Therapeutics, Inc. /DE/
10.8M1.4%128.8K111.10+374.4%
WDC
WESTERN DIGITAL CORP
10.2M1.3%37.7K459.44+507.4%
AMZN
AMAZON COM INC
9.1M1.1%43.7K258.63+15.6%
TTMI
TTM TECHNOLOGIES INC
9.1M1.1%93.0K110.54+175.9%
FIVE
FIVE BELOW, INC
9.0M1.1%39.5K250.24+79.7%
CW
CURTISS WRIGHT CORP
8.9M1.1%13.0K634.99+32.2%
GH
Guardant Health, Inc.
8.4M1.1%91.0K170.69+191.8%
MELI
MERCADOLIBRE INC
7.8M1.0%4.5K1,922.73-17.7%
APPF
APPFOLIO INC
7.5M0.9%47.5K224.40-16.1%
GDX
VanEck Gold Miners ETF
7.3M0.9%80.0K102.83+76.3%
UTHR
UNITED THERAPEUTICS Corp
7.3M0.9%12.3K513.12+67.4%
KRMN
Karman Holdings Inc.
7.2M0.9%90.5K53.40+5.2%
FERG
Ferguson Enterprises Inc. /DE/
6.8M0.9%29.3K242.24+5.1%
PTGX
Protagonist Therapeutics, Inc
6.5M0.8%62.1K154.32+174.4%
CLH
CLEAN HARBORS INC
6.3M0.8%21.9K315.98+29.5%
TLN
Talen Energy Corp
5.9M0.7%18.5K314.46-12.7%
IMNM
Immunome Inc.
5.7M0.7%262.9K28.52+198.0%
META
Meta Platforms, Inc.
5.7M0.7%10.0K549.90-26.5%
DBVT
DBV Technologies S.A.
5.7M0.7%271.3K14.55+48.5%
RKLB
Rocket Lab Corp
5.5M0.7%86.0K72.57+78.3%
HEI
HEICO CORP
5.3M0.7%19.3K355.04+15.6%
QXO
QXO, Inc.
5.1M0.6%264.3K13.76-28.6%
SITM
SITIME Corp
5.1M0.6%14.8K614.83+177.5%
GE
GENERAL ELECTRIC CO
4.4M0.6%15.5K348.37+30.7%
ASND
Ascendis Pharma A/S
4.4M0.5%19.1K253.29+31.4%
REAL
TheRealReal, Inc.
4.1M0.5%451.1K11.12+36.9%
LASR
NLIGHT, INC.
3.8M0.5%66.0K47.39+82.6%
XENE
Xenon Pharmaceuticals Inc.
3.5M0.4%59.9K60.77+61.5%
TBBB
BBB FOODS INC
3.4M0.4%95.2K50.66+95.8%
MAZE
Maze Therapeutics, Inc.
3.3M0.4%111.5K29.43+118.3%
ABVX
Abivax S.A.
3.2M0.4%28.8K114.95+59.9%
ACHC
Acadia Healthcare Company, Inc.
2.9M0.4%122.6K27.82+30.6%
WRBY
Warby Parker Inc.
2.8M0.4%135.0K27.44+3.3%
KRYS
Krystal Biotech, Inc.
2.7M0.3%10.6K346.58+137.6%
BBIO
BridgeBio Pharma, Inc.
2.6M0.3%35.2K81.50+66.7%

A position that grew quarter on quarter may simply reflect a higher price: if the stock rose 40% and the manager did nothing, the reported value rose 40%. Reading that as accumulation is reading the price back to yourself. More on that →

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