Alta Park Capital portfolio
Concentrated managerType not verifiedPortfolio as of Jun 30, 2026 (Q2 2026) · filed with the SEC on Aug 14, 2026 · data updated on Nov 5, 2026 · Q2 2026 13F (filing) ↗ · all its 13F filings ↗
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Alta Park Capital reported a $1.1 bn portfolio of 26 positions to the SEC as of the end of Q2 2026. Its largest positions are SNDK, WDC, MRVL. During the quarter it opened Marvell Technology and Advanced Micro Devices and exited Apple and Spotify Technology.
Sections with a free account
What changed this quarter
32 positions with a change (10 new, 6 added to, 7 trimmed, 9 sold); also, 1 entered through an IPO. 12 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- Newly listedDPC HoldingsDPC2.7% of the portfolio
It started trading this quarter: it appears in a 13F for the first time. The filing does not say whether the manager already held it before the listing, so it is not counted as a purchase.
- Marvell Technology+5.9 ppof portfolioNew— → 5.9%
- Advanced Micro Devices+5.3 ppof portfolioNew— → 5.3%
- Take-two Interactive Software+5.2 ppof portfolioNew— → 5.2%
- Semtech+3.9 ppof portfolioNew— → 3.9%
- Globalfoundries+3.6 ppof portfolioNew— → 3.6%
- STMicroelectronics+3.5 ppof portfolioNew— → 3.5%
- Apple−3.5 ppof portfolioSold out6.0% → —
- Datadog+2.2 ppof portfolioNew— → 2.2%
- Snowflake+2.2 ppof portfolioNew— → 2.2%
- Spotify Technology−2.1 ppof portfolioSold out3.7% → —
- Lumentum Holdings−2.1 ppof portfolioSold out3.6% → —
- Coherent−65%fewer sharesReduced3.6% → 1.2%
The figure on the right: for positions added to or trimmed, the change in the number of shares (%); for new and sold ones, the points of the portfolio moved (pp). Below, the portfolio weight before → after. Traded weight: what it bought or sold, excluding price effects.
Top holdings
- SandiskSNDK11.0%
- Western DigitalWDC8.1%
- Marvell TechnologyMRVL5.9%
- Applied MaterialsAMAT5.6%
- TeradyneTER5.4%
- Advanced Micro DevicesAMD5.3%
- Take-two Interactive SoftwareTTWO5.2%
- Palo Alto NetworksPANW5.1%
- CompassCOMP4.4%
- Nu HoldingsNU4.2%
- SemtechSMTC3.9%
- GlobalfoundriesGFS3.6%
- ASML HoldingASML3.6%
- STMicroelectronicsSTM3.5%
- Tower SemiconductorTSEM3.2%
“Since”: first quarter of the current run, unbroken until today. In the details, prices are the quarter-end prices of the quarters in which it added shares, per the 13F. The manager may have bought at any price within each quarter; the SEC only publishes the value at quarter end.
Portfolio by sector
- ● Information Technology 77%
- ● Communication Services 11%
- ● Real Estate 4%
- ● Financials 4%
- ● Materials 3%
- ● Consumer Discretionary 1%
How its portfolio changed (8 quarters)
Q2 2026: 26
Q2 2026: 60%
Q2 2026: 31.4%
Traded turnover: the weight it bought plus the weight it sold in the quarter, divided by two, excluding price moves. The plain “turnover” in the header does include that effect. With a free account: the full history and sectors over time.
Declared options (1)
Besides stocks, Alta Park Capital declared 1 call (they gain if it rises) with a notional of $13.4M. The 13F reports the value of the underlying shares, not the premium paid, so these figures look large and are not added to the portfolio. Nor does it say whether the option is bought or written, or its strike or expiry: it may be a hedge.
- CALLON SemiconductorONnew this quarter$13.4M
Stakes above 5% (13D/13G)
Companies where this filer reported holding 5% or more of the shares. It is the figure from its latest filing on each one; history since December 2024.
How we classify it
Type not verified. It meets the portfolio criteria of a concentrated manager, but its type is not verified: we found no official document that is enough to say what kind of entity it is. It may be an investment firm, but also an adviser adding up client accounts, a bank or a family vehicle. It counts in the tallies like the rest; keep that in mind when reading it. How the type is assigned
Managers of a similar size
A 13F portfolio value between a third and three times this one, whatever the type of filer. It is not a comparison of what they hold.
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