In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), Alta Park Capital, LP reported 26 stock positions worth $1.1 billion . Its top holding was Sandisk (SNDK) at 11.0% of the portfolio, followed by Western Digital (WDC, 8.1% ) and Marvell Technology (MRVL, 5.9% ). Compared with Q1 2026, it opened 11 new positions, sold out of 9, added to 6 and reduced 7. The biggest buy was a new position in Marvell Technology (MRVL) and the biggest sale an exit from Apple (AAPL).
Location San Francisco, CA
CIK 0001621855
Portfolio Value $1.1B (Q2 2026) Holdings 26 stocks · $1.1B Holdings quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q1 2026 SNDK Sandisk Corp. 52,132 $118.5M No change WDC Western Digital Corp. 136,238 $87.0M Add +7.6% MRVL Marvell Technology Inc. 213,865 $63.7M New AMAT Applied Materials Inc. 83,541 $60.4M Reduce -17.7% TER Teradyne Inc. 120,779 $58.4M Add +29.1% AMD Advanced Micro Devices 99,017 $57.5M New TTWO Take-Two Interactive Softwre 224,240 $56.1M New PANW Palo Alto Networks Inc. 160,554 $54.8M No change COMP Compass Inc. Class A 3,867,921 $47.7M Add +14.2% NU Nu Holdings Ltd./Cayman Isl-A filed as NU HLDGS LTD 3,402,399 $45.5M Add +10.0% SMTC Semtech Corp. 257,938 $41.7M New GFS Globalfoundries Inc. 471,201 $38.8M New ASML ASML Holding NV-NY Reg SHS filed as ASML HLDG NV 19,310 $38.4M Reduce -8.5% STM Stmicroelectronics NV-NY SHS 506,977 $38.0M New TSEM Tower Semiconductor Ltd. 131,216 $34.2M Reduce -13.5% NVDA Nvidia Corp. 157,820 $31.6M Reduce -13.6% S Sentinelone Inc. Class A 1,789,478 $30.4M Add +8.1% DPC DPC Holdings PLC 584,079 $28.7M New DDOG Datadog Inc. Class A 92,914 $24.2M New SNOW Snowflake Inc. 94,966 $24.2M New META Meta Platforms Inc. Class A 42,230 $23.8M Add +7.5% NFLX Netflix Inc. 309,505 $22.1M Reduce -37.7% MELI MercadoLibre Inc. 8,075 $13.7M Reduce -5.7% COHR Coherent Corp. 32,965 $13.0M Reduce -65.0% FWONK Liberty Media Corp. Class C 134,700 $12.8M New OKTA Okta Inc. 93,900 $12.8M New
Options reported separately and not counted above: ON calls ($13.4M).
Portfolio Sells Q1 2026 → Q2 2026 Portfolio Sells quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q1 2026 % Of Portfolio Change To Portfolio ▲ AAPL Apple Inc. Sold out 0.00% −6.00 NFLX Netflix Inc. Reduce -37.7% 2.05% −5.63 SPOT Spotify Technology SA Sold out 0.00% −3.72 LITE Lumentum Holdings Inc. Sold out 0.00% −3.62 ONTO Onto Innovation Inc. Sold out 0.00% −3.35 AVGO Broadcom Inc. Sold out 0.00% −3.08 LYV Live Nation Entertainment Inc. Sold out 0.00% −2.95 MIR Mirion Technologies Inc. Sold out 0.00% −2.92 COHR Coherent Corp. Reduce -65.0% 1.21% −2.40 TWLO Twilio Inc. Class A Sold out 0.00% −2.39 NVDA Nvidia Corp. Reduce -13.6% 2.93% −2.19 NTSK Netskope Inc. Class A Sold out 0.00% −1.24 MELI MercadoLibre Inc. Reduce -5.7% 1.27% −1.11 TSEM Tower Semiconductor Ltd. Reduce -13.5% 3.17% −1.11 ASML ASML Holding NV-NY Reg SHS Reduce -8.5% 3.56% −0.92 AMAT Applied Materials Inc. Reduce -17.7% 5.60% +0.02
Portfolio Buys Q1 2026 → Q2 2026 Portfolio Buys quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q1 2026 % Of Portfolio Change To Portfolio ▼ MRVL Marvell Technology Inc. New 5.91% +5.91 AMD Advanced Micro Devices New 5.34% +5.34 TTWO Take-Two Interactive Softwre New 5.20% +5.20 SMTC Semtech Corp. New 3.87% +3.87 GFS Globalfoundries Inc. New 3.60% +3.60 STM Stmicroelectronics NV-NY SHS New 3.52% +3.52 DPC DPC Holdings PLC New 2.66% +2.66 WDC Western Digital Corp. Add +7.6% 8.07% +2.57 DDOG Datadog Inc. Class A New 2.24% +2.24 SNOW Snowflake Inc. New 2.24% +2.24 FWONK Liberty Media Corp. Class C New 1.19% +1.19 OKTA Okta Inc. New 1.19% +1.19 TER Teradyne Inc. Add +29.1% 5.42% +0.96 COMP Compass Inc. Class A Add +14.2% 4.42% +0.44 S Sentinelone Inc. Class A Add +8.1% 2.82% −0.61 META Meta Platforms Inc. Class A Add +7.5% 2.21% −1.41 NU Nu Holdings Ltd./Cayman Isl-A Add +10.0% 4.22% −2.93
Options Activity Q1 2026 → Q2 2026 Security Type Change vs Q1 2026 Underlying Shares Value ▼ MRVL Marvell Technology Inc. call Sold out 200,000 $19.8Mbefore exit ON On Semiconductor call New 141,800 $13.4M
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings Quarter Positions 13F Reported Value Top Holdings Q2 2026 26 $1.1B SNDK, WDC, MRVL, AMAT, TER Q1 2026 24 $621.9M NFLX, NU, AAPL, AMAT, WDC Q4 2025 34 $831.1M WDC, NU, SNDK, NVDA, COMP Q3 2025 38 $993.3M NU, APP, WDC, META, BABA Q2 2025 31 $811.1M ORCL, NU, META, MELI, NVDA Q1 2025 21 $515.3M BABA, MELI, S, NU, NFLX Q4 2024 34 $764.2M AMZN, S, NFLX, NU, TSM Q3 2024 32 $713.6M NU, S, BABA, GTLB, MELI Q2 2024 28 $762.4M NU, AMZN, AAPL, NVDA, S Q1 2024 35 $922.9M NU, AMZN, NFLX, META, S