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Atika Capital Management LLC 13F holdings, Q2 2026

Holdings as of June 30, 2026 · filings on SEC EDGAR · this is the latest filing on record

Atika Capital Management LLC disclosed 62 US equity positions worth $1.0bn in its Q2 2026 13F filing. The largest position was VRT at 22.1% of the reported book, followed by STX and AMD. Against the Q1 2026 filing, it opened 20 new positions, added to 13 and reduced 8 among the top 50 holdings.

← Q1 2026

What did Atika Capital Management LLC own in Q2 2026? Top 50 positions

#StockSectorWeightValueSharesΔ sharesvs Q1 2026
1 VRT VERTIV HOLDINGS CO Industrials 22.1%$223.0m666,100 0% held
2 STX SEAGATE TECHNOLOGY HLDNGS PL Technology 7.6%$77.1m79,865 49% added
3 AMD ADVANCED MICRO DEVICES INC Technology 5.5%$55.5m95,500 new
4 LLY ELI LILLY & CO Healthcare 4.9%$49.3m41,100 0% held
5 INTC INTEL CORP Technology 3.7%$36.9m264,000 new
6 ECHO ECHOSTAR CORP Communication Services 3.3%$33.6m331,400 82% added
7 GH GUARDANT HEALTH INC Healthcare 2.7%$27.2m181,000 99% added
8 CIEN CIENA CORP Technology 2.4%$23.9m48,768 12% added
9 ISRG INTUITIVE SURGICAL INC Healthcare 2.3%$22.8m57,216 0% held
10 VPG VISHAY PRECISION GROUP INC Technology 1.8%$17.7m118,000 new
11 MRVL MARVELL TECHNOLOGY INC Technology 1.7%$17.3m58,000 new
12 RKLB ROCKET LAB CORP Industrials 1.7%$17.2m169,000 97% added
13 WDC WESTERN DIGITAL CORP Technology 1.7%$16.9m26,477 -30% reduced
14 RVMD REVOLUTION MEDICINES INC Healthcare 1.6%$16.5m88,000 new
15 ASND ASCENDIS PHARMA A/S Healthcare 1.6%$16.3m61,000 new
16 DNTH DIANTHUS THERAPEUTICS INC Healthcare 1.6%$16.1m165,000 28% added
17 AXSM AXSOME THERAPEUTICS INC. Healthcare 1.5%$15.4m63,000 new
18 TEVA TEVA PHARMACEUTICAL INDS LTD Healthcare 1.5%$14.9m440,000 -8% reduced
19 MTZ MASTEC INC Industrials 1.5%$14.8m35,500 -38% reduced
20 SN SHARKNINJA INC Consumer Cyclical 1.3%$13.4m88,000 new
21 NFLX NETFLIX INC. Communication Services 1.3%$12.9m180,000 0% held
22 CW CURTISS WRIGHT CORP Industrials 1.2%$12.1m16,000 23% added
23 KYMR KYMERA THERAPEUTICS INC Healthcare 1.2%$11.9m104,000 new
24 SITM SITIME CORP Technology 1.1%$11.2m15,000 1% added
25 TWST TWIST BIOSCIENCE CORP Healthcare 1.1%$11.1m108,000 new
26 REAL THE REALREAL INC Consumer Cyclical 1.1%$11.1m940,000 108% added
27 COGT COGENT BIOSCIENCES INC Healthcare 1.0%$10.5m272,000 -7% reduced
28 BWXT BWX TECHNOLOGIES INC Industrials 1.0%$10.5m54,000 -35% reduced
29 AMZN AMAZON COM INC Consumer Cyclical 1.0%$10.5m44,000 1% added
30 TBBB BBB FOODS INC Consumer Defensive 1.0%$10.4m250,000 163% added
31 AXGN AXOGEN INC Healthcare 1.0%$10.2m221,000 new
32 NOK NOKIA CORP Technology 1.0%$10.0m750,000 new
33 ORKA ORUKA THERAPEUTICS INC Healthcare 0.9%$9.5m100,000 -57% reduced
34 TTMI TTM TECHNOLOGIES INC Technology 0.9%$9.4m50,000 -46% reduced
35 CRL CHARLES RIV LABS INTL INC Healthcare 0.9%$8.6m38,000 new
36 ACMR ACM RESH INC Technology 0.8%$8.0m63,000 new
37 ROIV ROIVANT SCIENCES LTD Healthcare 0.8%$7.7m217,000 new
38 MELI MERCADOLIBRE INC Consumer Cyclical 0.8%$7.7m4,510 0% held
39 APPF APPFOLIO INC Technology 0.8%$7.6m47,500 0% held
40 PTGX PROTAGONIST THERAPEUTICS INC Healthcare 0.8%$7.6m62,100 0% held
41 RDDT REDDIT INC Communication Services 0.7%$7.5m43,000 new
42 SMTC SEMTECH CORP Technology 0.7%$7.4m46,000 new
43 FIVE FIVE BELOW INC Consumer Cyclical 0.7%$7.2m40,000 1% added
44 FERG FERGUSON ENTERPRISES INC Industrials 0.7%$7.0m29,300 0% held
45 DFTX DEFINIUM THERAPEUTICS INC Healthcare 0.6%$5.7m122,000 new
46 IMNM IMMUNOME INC Healthcare 0.6%$5.6m262,900 0% held
47 HUT HUT 8 CORP Financial Services 0.5%$5.1m44,500 -10% reduced
48 WRBY WARBY PARKER INC Healthcare 0.5%$4.6m150,000 11% added
49 JATT II ACQUISITION CORP 0.5%$4.5m400,000 new
50 PRAX PRAXIS PRECISION MEDICINES I Healthcare 0.4%$4.3m12,900 new

Weights are shares of the reported long US equity book (options excluded). Values are as filed, normalised to whole dollars. Share changes compare against the immediately preceding filing only.