In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 17, 2026), Alta Park Capital, LP reported 34 stock positions worth $831.1 million . Its top holding was Western Digital (WDC) at 8.2% of the portfolio, followed by Nu Holdings Ltd./Cayman Isl-A (NU, 6.8% ) and Sandisk (SNDK, 5.7% ). Compared with Q3 2025, it opened 10 new positions, sold out of 14, added to 9 and reduced 15. The biggest buy was a new position in Shopify Class A (SHOP) and the biggest sale an exit from Alibaba Group Holding-SP ADR (BABA).
Location San Francisco, CA
CIK 0001621855
Portfolio Value $831.1M (Q4 2025) Holdings 34 stocks · $831.1M 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 Q3 2025 WDC Western Digital Corp. 393,479 $67.8M Reduce -16.4% NU Nu Holdings Ltd./Cayman Isl-A filed as NU HLDGS LTD 3,384,592 $56.7M Reduce -25.4% SNDK Sandisk Corp. 197,896 $47.0M Reduce -17.9% NVDA Nvidia Corp. 225,911 $42.1M Add +2.9% COMP Compass Inc. Class A 3,595,040 $38.0M Add +5.7% APP AppLovin Corp. Class A 52,224 $35.2M Reduce -38.1% META Meta Platforms Inc. Class A 52,323 $34.5M Reduce -29.3% AMAT Applied Materials Inc. 123,326 $31.7M Reduce -9.5% TER Teradyne Inc. 163,112 $31.6M Reduce -40.8% NFLX Netflix Inc. 329,241 $30.9M Add +37.8% SPOT Spotify Technology SA 51,873 $30.1M Reduce -6.0% PANW Palo Alto Networks Inc. 143,139 $26.4M Add +36.3% S Sentinelone Inc. Class A 1,498,825 $22.5M Add +5.8% SMTC Semtech Corp. 283,726 $20.9M Add +39.3% SHOP Shopify Inc. Class A 125,412 $20.2M New TWLO Twilio Inc. Class A 140,467 $20.0M Add +114.8% TSEM Tower Semiconductor Ltd. 165,804 $19.5M New ASML ASML Holding NV-NY Reg SHS 18,150 $19.4M New ONTO Onto Innovation Inc. 122,617 $19.4M Reduce -2.8% AVGO Broadcom Inc. 55,715 $19.3M Add +11.6% CVNA Carvana Co. 45,412 $19.2M Reduce -24.7% RBRK Rubrik Inc. Class A 247,762 $18.9M Reduce -28.0% RKT Rocket Cos Inc. Class A 971,564 $18.8M New DASH DoorDash Inc. Class A 80,794 $18.3M New NTSK Netskope Inc. Class A 909,091 $15.9M Reduce -30.8% MELI MercadoLibre Inc. 7,714 $15.5M Add +7.1% MU Micron Technology Inc. 54,362 $15.5M New U Unity Software Inc. 312,807 $13.8M Reduce -25.3% MIR Mirion Technologies Inc. 562,522 $13.2M Reduce -8.0% MDB Mongodb Inc. 24,687 $10.4M Reduce -58.6% CRDO Credo Technology Group Holdi 67,868 $9.8M New GOOGL Alphabet Inc. Class A 31,070 $9.7M New TTWO Take-Two Interactive Softwre 37,652 $9.6M New AXON Axon Enterprise Inc. 16,523 $9.4M New
Portfolio Sells Q3 2025 → Q4 2025 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 Q3 2025 % Of Portfolio Change To Portfolio ▲ BABA Alibaba Group Holding-SP ADR Sold out 0.00% −4.67 ORCL Oracle Corp. Sold out 0.00% −3.20 RBLX Roblox Corp. Class A Sold out 0.00% −2.78 WIX Wix.com Ltd. Sold out 0.00% −2.77 VRT Vertiv Holdings Co. Class A Sold out 0.00% −2.44 ANET Arista Networks Inc. Sold out 0.00% −2.38 COHR Coherent Corp. Sold out 0.00% −2.35 MRVL Marvell Technology Inc. Sold out 0.00% −1.93 APP AppLovin Corp. Class A Reduce -38.1% 4.23% −1.87 COIN Coinbase Global Inc. Class A Sold out 0.00% −1.39 META Meta Platforms Inc. Class A Reduce -29.3% 4.16% −1.31 NTSK Netskope Inc. Class A Reduce -30.8% 1.92% −1.09 CFLT Confluent Inc. Class A Sold out 0.00% −0.94 MSFT Microsoft Corp. Sold out 0.00% −0.94 RDDT Reddit Inc. Class A Sold out 0.00% −0.85 MDB Mongodb Inc. Reduce -58.6% 1.25% −0.62 RBRK Rubrik Inc. Class A Reduce -28.0% 2.28% −0.57 MGNI Magnite Inc. Sold out 0.00% −0.56 NU Nu Holdings Ltd./Cayman Isl-A Reduce -25.4% 6.82% −0.50 MQ Marqeta Inc. Sold out 0.00% −0.32 SPOT Spotify Technology SA Reduce -6.0% 3.62% −0.25 U Unity Software Inc. Reduce -25.3% 1.66% −0.03 TER Teradyne Inc. Reduce -40.8% 3.80% −0.02 CVNA Carvana Co. Reduce -24.7% 2.31% +0.02 MIR Mirion Technologies Inc. Reduce -8.0% 1.59% +0.15 ONTO Onto Innovation Inc. Reduce -2.8% 2.33% +0.69 AMAT Applied Materials Inc. Reduce -9.5% 3.81% +1.00 WDC Western Digital Corp. Reduce -16.4% 8.16% +2.46 SNDK Sandisk Corp. Reduce -17.9% 5.65% +2.93
Portfolio Buys Q3 2025 → Q4 2025 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 Q3 2025 % Of Portfolio Change To Portfolio ▼ SHOP Shopify Inc. Class A New 2.43% +2.43 TSEM Tower Semiconductor Ltd. New 2.34% +2.34 ASML ASML Holding NV-NY Reg SHS New 2.34% +2.34 RKT Rocket Cos Inc. Class A New 2.26% +2.26 DASH DoorDash Inc. Class A New 2.20% +2.20 MU Micron Technology Inc. New 1.87% +1.87 COMP Compass Inc. Class A Add +5.7% 4.57% +1.82 TWLO Twilio Inc. Class A Add +114.8% 2.40% +1.75 CRDO Credo Technology Group Holdi New 1.18% +1.18 GOOGL Alphabet Inc. Class A New 1.17% +1.17 TTWO Take-Two Interactive Softwre New 1.16% +1.16 AXON Axon Enterprise Inc. New 1.13% +1.13 SMTC Semtech Corp. Add +39.3% 2.52% +1.05 PANW Palo Alto Networks Inc. Add +36.3% 3.17% +1.02 NVDA Nvidia Corp. Add +2.9% 5.07% +0.95 NFLX Netflix Inc. Add +37.8% 3.71% +0.83 AVGO Broadcom Inc. Add +11.6% 2.32% +0.66 S Sentinelone Inc. Class A Add +5.8% 2.71% +0.19 MELI MercadoLibre Inc. Add +7.1% 1.87% +0.17
Options Activity Q3 2025 → Q4 2025 Security Type Change vs Q3 2025 Underlying Shares Value ▼ QQQ Invesco QQQ Trust Series 1 put Sold out 160,000 $96.1Mbefore exit SMH Vaneck Semiconductor ETF put Sold out 170,000 $55.5Mbefore exit
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