Light Street Capital Management portfolio
Concentrated managerInvestment firmPortfolio 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.
Light Street Capital Management reported a $851M portfolio of 27 positions to the SEC as of the end of Q2 2026. Its largest positions are TSM, AMD, ALAB. During the quarter it opened Astera Labs and Toast and exited Bill Holdings.
Sections with a free account
What changed this quarter
23 positions with a change (6 new, 7 added to, 6 trimmed, 4 sold); also, 2 entered through an IPO. 12 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- Newly listedRoundhill ETF TrustDRAM1.0% 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.
- Astera Labs+7.1 ppof portfolioNew— → 7.1%
- Advanced Micro Devices−50%fewer sharesReduced9.0% → 7.5%
- Toast+3.8 ppof portfolioNew— → 3.8%
- Reddit+3.7 ppof portfolioNew— → 3.7%
- NVIDIA−50%fewer sharesReduced9.5% → 3.2%
- Bill Holdings−2.8 ppof portfolioSold out4.8% → —
- Gitlab+66%more sharesIncreased5.1% → 7.0%
- MercadoLibre+2.5 ppof portfolioNew— → 2.5%
- Snowflake+2.1 ppof portfolioNew— → 2.1%
- Amazon.com−59%fewer sharesReduced5.2% → 1.4%
- Coupang+92%more sharesIncreased4.0% → 4.1%
- Mongodb+2.0 ppof portfolioNew— → 2.0%
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
- Taiwan Semiconductor ManufacturingTSM12.7%
- Advanced Micro DevicesAMD7.5%
- Astera LabsALAB7.1%
- GitlabGTLB7.0%
- BroadcomAVGO6.8%
- Amkor TechnologyAMKR6.0%
- JFrogFROG5.5%
- MKSMKSI5.4%
- Chime FinancialCHYM5.3%
- CoupangCPNG4.1%
- ToastTOST3.8%
- RedditRDDT3.7%
- NVIDIANVDA3.2%
- Bloom EnergyBE3.0%
- ASML HoldingASML2.6%
“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 73%
- ● Financials 9%
- ● Consumer Discretionary 8%
- ● Communication Services 6%
- ● Industrials 3%
- ● No sector 1%
How its portfolio changed (8 quarters)
Q2 2026: 27
Q2 2026: 67%
Q2 2026: 24.5%
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, Light Street Capital Management declared 1 put (they gain if the stock falls) with a notional of $52.2M. 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.
- PUTTaiwan Semiconductor ManufacturingTSM$52.2M
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.
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