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Latest Atika Capital Management LLC Stock Portfolio

$796Million | No. of Holdings #52

Atika Capital Management LLC Performance

2026 Q1+11.77%
YTD+11.77%
2025+27.16%

About Atika Capital Management LLC and 13F Hedge Fund Stock Holdings

On 2026-05-14, the fund reported it's updated stock portfolio. In the 13F Holdings report, Atika Capital Management LLC reported an equity portfolio of $796.4 Millions as of 31 Mar, 2026. <br><br> The top stock holdings of Atika Capital Management LLC are VRT, LLY, ISRG. The fund has invested 21% of it's portfolio in VERTIV HOLDINGS CO and 4.8% of portfolio in ELI LILLY & CO. <br><br> The fund managers got completely rid off SHOPIFY INC (SHOP), MADRIGAL PHARMACEUTICALS (MDGL) and TESLA INC (TSLA) stocks. They significantly reduced their stock positions in TALEN ENERGY CORP, WARBY PARKER INC (WRBY) and AMAZON COM INC (AMZN). Atika Capital Management LLC opened new stock positions in ORUKA THERAPEUTICS INC, WESTERN DIGITAL CORP (WDC) and VANECK ETF TRUST (AFK). The fund showed a lot of confidence in some stocks as they added substantially to CLEAN HARBORS INC (CLH), ECHOSTAR CORP (SATS) and ROCKET LAB CORP.
Atika Capital Management LLC Equity Portfolio Value
Last Reported on: 14 May, 2026
$796Million
  as of May 14, 2026

Atika Capital Management LLC Annual Return Estimates Vs S&P 500

Our best estimate is that Atika Capital Management LLC made a return of 11.77% in the last quarter. In trailing 12 months, it's portfolio return was 52.91%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
oruka therapeutics inc11,276,600
western digital corp10,202,100
vaneck etf trust7,341,600
united therapeutics corp del7,323,300
karman hldgs inc7,244,530
meta platforms inc5,721,300
sitime corp5,112,910
nlight inc3,763,320
New stocks bought by Atika Capital Management LLC

Additions

Ticker% Inc.
clean harbors inc628
echostar corp45.83
rocket lab corp38.45
curtiss wright corp31.55
dbv technologies s a31.14
cloudflare inc18.4
appfolio inc6.74
vertiv holdings co4.72
Additions to existing portfolio by Atika Capital Management LLC

Reductions

Ticker% Reduced
talen energy corp-56.08
abivax sa-47.64
warby parker inc-45.78
amazon com inc-45.38
cogent biosciences inc-42.06
ge aerospace-40.23
qxo inc-37.08
xenon pharmaceuticals inc-35.25
Atika Capital Management LLC reduced stake in above stock

Sold off

Ticker$ Sold
bath & body works inc-4,518,000
rocket cos inc-2,516,800
shopify inc-19,960,300
medline inc-4,947,600
embraer s.a.-7,462,410
lemonade inc-8,108,610
figure technology solutio-4,551,500
rapt therapeutics inc-3,192,080
Atika Capital Management LLC got rid off the above stocks

Sector Distribution

Atika Capital Management LLC has about 36.2% of it's holdings in Industrials sector.

  • Industrials
  • Healthcare
  • Technology
  • Others
  • Communication Services
  • Consumer Cyclical
Sector%
Industrials36.2
Healthcare24.3
Technology17.9
Others11.3
Communication Services5.6
Consumer Cyclical4.7

Market Cap. Distribution

Atika Capital Management LLC has about 72.5% of it's portfolio invested in the large-cap and mega-cap stocks.

  • LARGE-CAP
  • MEGA-CAP
  • MID-CAP
  • UNALLOCATED
  • NANO-CAP
  • SMALL-CAP
Category%
LARGE-CAP58.8
MEGA-CAP13.7
MID-CAP11.8
UNALLOCATED11.3
NANO-CAP3.4
SMALL-CAP1.1

Stocks belong to which Index?

About 38.1% of the stocks held by Atika Capital Management LLC either belong to S&P 500 or RUSSELL 2000 index.

  • Others
  • S&P 500
  • RUSSELL 2000
Index%
Others61.9
S&P 50022.8
RUSSELL 200015.3
Top 5 Winners (%)%
dianthus therapeutics inc
101.4 %
CIEN
ciena corp
57.0 %
VRT
vertiv holdings co
52.8 %
MTZ
mastec inc
47.0 %
STX
seagate technology hldngs pl
41.4 %
Top 5 Winners ($)$
VRT
vertiv holdings co
57.7 M
CIEN
ciena corp
8.0 M
STX
seagate technology hldngs pl
6.1 M
MTZ
mastec inc
5.9 M
dianthus therapeutics inc
5.6 M
Top 5 Losers (%)%
REAL
the realreal inc
-38.2 %
APPF
appfolio inc
-31.5 %
ISRG
intuitive surgical inc
-18.6 %
LLY
eli lilly & co
-14.4 %
abivax sa
-13.3 %
Top 5 Losers ($)$
LLY
eli lilly & co
-6.4 M
ISRG
intuitive surgical inc
-6.0 M
APPF
appfolio inc
-3.4 M
REAL
the realreal inc
-3.4 M
talen energy corp
-1.7 M

Atika Capital Management LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of Atika Capital Management LLC

Atika Capital Management LLC has 52 stocks in it's portfolio. About 45.1% of the portfolio is in top 10 stocks. LLY proved to be the most loss making stock for the portfolio. VRT was the most profitable stock for Atika Capital Management LLC last quarter.

$633.63MTotal Value
78.00Positions
14 May, 2026Last Reported
Current holdings of Current Stock Holdings of Atika Capital Management LLC, last reported on 14 May, 2026. Select a row with a linked ticker to view its historical trend.
ExpandHoldingsorted ascending% PortfolioShares Held$ Value% Change
AFK
Vaneck Etf Trust

Vaneck Etf Trust

AFK
Atika Capital Management LLC's holding in Vaneck Etf Trust over time
0.92%80,000
$7.34M
0.92%
new position
ASND
Ascendis Pharma A/S

Ascendis Pharma A/S

ASND
Atika Capital Management LLC's holding in Ascendis Pharma A/S over time
0.55%19,125
$4.37M
0.55%
decreased 7.35 percentreduced
DBVT
Dbv Technologies S A

Dbv Technologies S A

DBVT
Atika Capital Management LLC's holding in Dbv Technologies S A over time
0.71%271,300
$5.67M
0.71%
increased 31.14 percentadded