Atika Capital Management LLC
13F Reported Value
ⓘ$1.5B
incl. option notional
Equity Holdings
ⓘ$1.0B
Option Notional
ⓘ$513.7M
$349.6M puts / $164.1M calls
Holdings
81
Latest Filing
2026-06-30
Filing Quarter
Q2 2026
Portfolio Overview
Atika Capital Management LLC disclosed 81 positions worth $1.5B in its Form 13F-HR for Q2 2026 — $1.0B in common stock plus $513.7M of put/call option positions (reported at underlying notional value, not premium at risk), led by $VRT (Vertiv Holdings Co) at 22.1% of the equity portfolio. During the quarter the fund opened 44 new positions and exited 23 — including a new stake in $QQQ. The portfolio is most concentrated in Technology (53.8% of disclosed assets). All figures are sourced directly from Atika Capital Management LLC’s Form 13F-HR filing with the SEC under CIK 1599731.
AI Fund Analysis
StableSector Allocation
AUM History
Top Equity Holdings by Value
Option Positions
13F rules report options at the value of the underlying shares (notional) — not the premium paid or capital at risk. Shown separately from the equity sleeve above.
Quarterly Activity — Q2 2026
Click any card to unlockTop Holdings
- 81.0#22
Quality
$223.0M666,100 sh SPDR SERIES TRUST - ST STR SP BIOT PUT
—Quality
$89.0M5,625 sh- —
Quality
$77.1M79,865 sh - $73.6M1,000 sh
- 81.1
Quality
$58.7M500 sh - 79.8
Quality
$55.5M95,500 sh - 68.7
Quality
$52.9M2,220 sh - 87.5
Quality
$49.3M41,100 sh - $48.6M660 sh
- 45.6
Quality
$36.9M264,000 sh
| Company | Quality | Value | Shares |
|---|---|---|---|
 Vertiv Holdings Co$VRT | 81.0#22 | $223.0M | 666,100 |
| SPDR SERIES TRUST - ST STR SP BIOT PUT | — | $89.0M | 5,625 |
 Seagate Technology Holdings plc$STX | — | $77.1M | 79,865 |
 INVESCO QQQ TRUST, SERIES 1$QQQPUT | — | $73.6M | 1,000 |
 GE Vernova Inc.$GEVPUT | 81.1 | $58.7M | 500 |
 ADVANCED MICRO DEVICES INC$AMD | 79.8 | $55.5M | 95,500 |
 AMAZON COM INC$AMZNCALL | 68.7 | $52.9M | 2,220 |
 ELI LILLY & Co$LLY | 87.5 | $49.3M | 41,100 |
| INVESCO QQQ TRUST, SERIES 1$QQQCALL | — | $48.6M | 660 |
 INTEL CORP$INTC | 45.6 | $36.9M | 264,000 |
Unlock AI quality scores for every holding
32-signal composite ranking on each of Atika Capital Management LLC's 81 positions.
Showing top 10 of 81 holdings.
Sector Allocation
Technology
$542.1M
Healthcare
$291.5M
Industrials
$47.8M
Communication Services
$47.1M
Consumer Discretionary
$44.4M
Energy
$14.8M
Consumer Staples
$10.4M
Financials
$9.7M
Full Holdings — Atika Capital Management LLC (Q2 2026)
All 81 disclosed positions from the latest Form 13F-HR, with quarter-over-quarter share changes and 13F Pro quality scores. Sourced from SEC EDGAR.
| # | Ticker | Company | Value | Weight | QoQ | Quality |
|---|---|---|---|---|---|---|
| 1 | $VRT | Vertiv Holdings Co | $223.0M | 22.1% | +0% | 81 |
| 2 | — | SPDR SERIES TRUST - ST STR SP BIOT | $89.0M | — | +33% | — |
| 3 | $STX | Seagate Technology Holdings plc | $77.1M | 7.7% | +49% | — |
| 4 | $QQQPUT | INVESCO QQQ TRUST, SERIES 1 | $73.6M | — | NEW | — |
| 5 | $GEVPUT | GE Vernova Inc. | $58.7M | — | NEW | 81.1 |
| 6 | $AMD | ADVANCED MICRO DEVICES INC | $55.5M | 5.5% | NEW | 79.8 |
| 7 | $AMZNCALL | AMAZON COM INC | $52.9M | — | NEW | 68.7 |
| 8 | $LLY | ELI LILLY & Co | $49.3M | 4.9% | +0% | 87.5 |
| 9 | $QQQCALL | INVESCO QQQ TRUST, SERIES 1 | $48.6M | — | NEW | — |
| 10 | $INTC | INTEL CORP | $36.9M | 3.7% | NEW | 45.6 |
| 11 |  $MUPUT | MICRON TECHNOLOGY INC | $34.6M | — | NEW | 86.2 |
| 12 |  $ECHO | EchoStar CORP | $33.6M | 3.3% | +82% | 32.8 |
| 13 | — | VANECK ETF TRUST - SEMICONDUCTR ETF | $33.5M | — | -29% | — |
| 14 |  $GH | Guardant Health, Inc. | $27.2M | 2.7% | +99% | 39 |
| 15 | — | ISHARES TR - EXPANDED TECH | $24.6M | — | NEW | — |
| 16 |  $CIEN | CIENA CORP | $23.9M | 2.4% | +12% | 72.9 |
| 17 |  $ISRG | INTUITIVE SURGICAL INC | $22.8M | 2.3% | +0% | 79.9 |
| 18 |  $BTICALL | British American Tobacco p.l.c. | $20.4M | — | NEW | — |
| 19 |  $IBITPUT | iShares Bitcoin Trust ETF | $20.0M | — | NEW | — |
| 20 |  $VPG | Vishay Precision Group, Inc. | $17.7M | 1.8% | NEW | 30.4 |
| 21 |  $MRVL | Marvell Technology, Inc. | $17.3M | 1.7% | NEW | 76.5 |
| 22 |  $RKLB | Rocket Lab Corp | $17.2M | 1.7% | +97% | 39.9 |
| 23 |  $WDC | WESTERN DIGITAL CORP | $16.9M | 1.7% | -30% | 80.7 |
| 24 |  $RVMD | Revolution Medicines, Inc. | $16.5M | 1.6% | NEW | — |
| 25 |  $ASND | Ascendis Pharma A/S | $16.3M | 1.6% | +219% | 44.8 |
| 26 |  $DNTH | Dianthus Therapeutics, Inc. /DE/ | $16.1M | 1.6% | +28% | 22.6 |
| 27 | — | ROUNDHILL ETF TRUST - MEMORY ETF | $15.5M | — | NEW | — |
| 28 |  $AXSM | Axsome Therapeutics, Inc. | $15.4M | 1.5% | NEW | 40.8 |
| 29 |  $TEVA | TEVA PHARMACEUTICAL INDUSTRIES LTD | $14.9M | 1.5% | -8% | — |
| 30 |  $MTZ | MASTEC INC | $14.8M | 1.5% | -38% | 58.8 |
| 31 |  $SN | SharkNinja, Inc. | $13.4M | 1.3% | NEW | 66.8 |
| 32 |  $NFLX | NETFLIX INC | $12.9M | 1.3% | +0% | 78.8 |
| 33 |  $CW | CURTISS WRIGHT CORP | $12.1M | 1.2% | +23% | 69.5 |
| 34 |  $KYMR | Kymera Therapeutics, Inc. | $11.9M | 1.2% | NEW | 28.4 |
| 35 |  $STUBCALL | StubHub Holdings, Inc. | $11.6M | — | NEW | 49.3 |
| 36 |  $SITM | SITIME Corp | $11.2M | 1.1% | +1% | 66.1 |
| 37 |  $TWST | Twist Bioscience Corp | $11.1M | 1.1% | NEW | 33.9 |
| 38 |  $REAL | TheRealReal, Inc. | $11.1M | 1.1% | +108% | 36.8 |
| 39 |  $COGT | Cogent Biosciences, Inc. | $10.5M | 1.0% | -7% | — |
| 40 |  $BWXT | BWX Technologies, Inc. | $10.5M | 1.0% | -35% | 63.8 |
| 41 | $AMZN | AMAZON COM INC | $10.5M | 1.0% | +1% | 68.7 |
| 42 |  $TBBB | BBB FOODS INC | $10.4M | 1.0% | +163% | — |
| 43 |  $AXGN | Axogen, Inc. | $10.2M | 1.0% | NEW | 40.8 |
| 44 |  $NOK | NOKIA CORP | $10.0M | 1.0% | NEW | — |
| 45 |  $ORKA | Oruka Therapeutics, Inc. | $9.5M | 0.9% | -57% | — |
| 46 |  $TTMI | TTM TECHNOLOGIES INC | $9.4M | 0.9% | -46% | 62.6 |
| 47 |  $CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | $8.6M | 0.9% | NEW | 43.8 |
| 48 |  $ALKSCALL | Alkermes plc. | $8.4M | — | NEW | — |
| 49 |  $ACMR | ACM Research, Inc. | $8.0M | 0.8% | NEW | 54 |
| 50 |  $ROIV | Roivant Sciences Ltd. | $7.7M | 0.8% | NEW | — |
| 51 |  $MELI | MERCADOLIBRE INC | $7.7M | 0.8% | +0% | 80.2 |
| 52 |  $APPF | APPFOLIO INC | $7.6M | 0.8% | +0% | 71.6 |
| 53 |  $PTGX | Protagonist Therapeutics, Inc | $7.6M | 0.8% | +0% | 59.4 |
| 54 |  $RDDT | Reddit, Inc. | $7.5M | 0.7% | NEW | 79.8 |
| 55 |  $SMTC | SEMTECH CORP | $7.4M | 0.7% | NEW | 55.9 |
| 56 | $ECHOCALL | EchoStar CORP | $7.2M | — | -55% | 32.8 |
| 57 |  $FIVE | FIVE BELOW, INC | $7.2M | 0.7% | +1% | 69.5 |
| 58 |  $FERG | Ferguson Enterprises Inc. /DE/ | $7.0M | 0.7% | +0% | 52.2 |
| 59 |  $ENPHCALL | Enphase Energy, Inc. | $5.9M | — | NEW | 42.9 |
| 60 |  $DFTX | Definium Therapeutics, Inc. | $5.7M | 0.6% | NEW | — |
| 61 |  $IMNM | Immunome Inc. | $5.6M | 0.6% | +0% | 25.3 |
| 62 |  $HUT | Hut 8 Corp. | $5.1M | 0.5% | -10% | 37.4 |
| 63 |  $WRBY | Warby Parker Inc. | $4.6M | 0.5% | +11% | 54.3 |
| 64 |  $JATT | JATT II Acquisition Corp. | $4.5M | 0.5% | NEW | — |
| 65 |  $PRAX | Praxis Precision Medicines, Inc. | $4.3M | 0.4% | NEW | — |
| 66 |  $LASR | NLIGHT, INC. | $3.8M | 0.4% | -17% | 54.1 |
| 67 |  $ABVX | Abivax S.A. | $3.6M | 0.4% | -6% | — |
| 68 |  $CRWVCALL | CoreWeave, Inc. | $3.5M | — | NEW | 52.2 |
| 69 | $TEVACALL | TEVA PHARMACEUTICAL INDUSTRIES LTD | $3.4M | — | NEW | — |
| 70 | $ALKS | Alkermes plc. | $2.9M | 0.3% | NEW | — |
| 71 |  $CRWD | CrowdStrike Holdings, Inc. | $2.9M | 0.3% | NEW | 67.7 |
| 72 |  $TARS | Tarsus Pharmaceuticals, Inc. | $2.5M | 0.3% | NEW | 55 |
| 73 |  $KRYS | Krystal Biotech, Inc. | $2.2M | 0.2% | -44% | 79.2 |
| 74 |  $VCEL | Vericel Corp | $1.5M | 0.1% | NEW | 62.8 |
| 75 |  $MANE | Veradermics, Inc | $1.5M | 0.1% | NEW | — |
| 76 |  $KNSA | Kiniksa Pharmaceuticals International, plc | $1.5M | 0.1% | NEW | — |
| 77 |  $CLFCALL | CLEVELAND-CLIFFS INC. | $1.4M | — | NEW | 38.3 |
| 78 |  $SG | Sweetgreen, Inc. | $1.1M | 0.1% | NEW | 35.9 |
| 79 |  $KEELCALL | Keel Infrastructure Corp. | $861,000 | — | NEW | 17.9 |
| 80 |  $SNDK | Sandisk Corp | $688,940 | 0.1% | NEW | 87.7 |
| 81 | $STUB | StubHub Holdings, Inc. | $643,500 | 0.1% | NEW | 49.3 |
New Positions (44)
$QQQPUT INVESCO QQQ TRUST, SERIES 1$73.6M$GEVPUT GE Vernova Inc.$58.7M$AMD ADVANCED MICRO DEVICES INC$55.5M$AMZNCALL AMAZON COM INC$52.9M$QQQCALL INVESCO QQQ TRUST, SERIES 1$48.6M$INTC INTEL CORP$36.9M$MUPUT MICRON TECHNOLOGY INC$34.6M$BTICALL British American Tobacco p.l.c.$20.4M$IBITPUT iShares Bitcoin Trust ETF$20.0M$VPG Vishay Precision Group, Inc.$17.7M$MRVL Marvell Technology, Inc.$17.3M$RVMD Revolution Medicines, Inc.$16.5M$AXSM Axsome Therapeutics, Inc.$15.4MExited Positions (23)
$NFLXCALL NETFLIX INC
$TERN Terns Pharmaceuticals, Inc.
$NET Cloudflare, Inc.
$GOOG Alphabet Inc.
$UTHR UNITED THERAPEUTICS Corp
$KRMN Karman Holdings Inc.
$CLH CLEAN HARBORS INC
$TLN Talen Energy Corp
$META Meta Platforms, Inc.
$DBVT DBV Technologies S.A.
$HEI HEICO CORP
$QXO QXO, Inc.Browse Top Institutional Investors
13F Pro tracks 8,700+ institutional investors filing 13F reports with the SEC.
to search all 8,700+ institutional filers.
Available Analysis
13F Pro tracks comprehensive institutional data for Atika Capital Management LLC including:
Track Atika Capital Management LLC's Full Portfolio
See every holding, quarter-over-quarter changes, sector allocation, and accumulation patterns for Atika Capital Management LLC and 8,700+ other institutional investors.
Free tier includes full 13F search and fund profiles. Pro starts at $6.67/mo (billed annually).
AI-Powered Hedge Fund Analysis: Atika Capital Management LLC
13F Pro is an AI hedge fund tracker and stock research platform. For Atika Capital Management LLC (SEC CIK: 1599731), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.
Every holding in Atika Capital Management LLC's portfolio is scored on a 32-signal AI quality ranking (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.