Blue Grotto Capital portfolio
Concentrated managerInvestment firmPortfolio as of Sep 30, 2026 (Q3 2026) · filed with the SEC on Nov 4, 2026 · data updated on Nov 5, 2026 · Q3 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.
Blue Grotto Capital reported a $1.5 bn portfolio of 28 positions to the SEC as of the end of Q3 2026. Its largest positions are MSFT, TLN, TSM. During the quarter it opened Keysight Technologies and Assurant and exited CDW and Celsius Holdings.
Sections with a free account
What changed this quarter
36 positions with a change (7 new, 16 added to, 5 trimmed, 8 sold). 12 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- Sharkninja−62%fewer sharesReduced8.4% → 3.1%
- Keysight Technologies+5.0 ppof portfolioNew— → 5.0%
- Assurant+4.4 ppof portfolioNew— → 4.4%
- GE Healthcare Technologies+388%more sharesIncreased1.3% → 5.4%
- Microsoft+120%more sharesIncreased3.1% → 7.8%
- Amazon.com+200%more sharesIncreased2.0% → 5.1%
- CDW−3.1 ppof portfolioSold out3.7% → —
- Celsius Holdings−3.0 ppof portfolioSold out3.6% → —
- Lockheed Martin+2.8 ppof portfolioNew— → 2.8%
- Progressive−2.7 ppof portfolioSold out3.2% → —
- Akamai Technologies+2.4 ppof portfolioNew— → 2.4%
- Teradyne+2.4 ppof portfolioNew— → 2.4%
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
- MicrosoftMSFT7.8%
- Talen EnergyTLN6.2%
- Taiwan Semiconductor ManufacturingTSM6.2%
- GE Healthcare TechnologiesGEHC5.4%
- Amazon.comAMZN5.1%
- Keysight TechnologiesKEYS5.0%
- CACI InternationalCACI4.9%
- SeaSE4.7%
- AssurantAIZ4.4%
- RB GlobalRBA4.2%
- MKSMKSI4.2%
- TKO Group HoldingsTKO3.7%
- MagniteMGNI3.3%
- NVIDIANVDA3.1%
- SharkninjaSN3.1%
“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 37%
- ● Industrials 15%
- ● Consumer Discretionary 13%
- ● Communication Services 11%
- ● Health Care 8%
- ● Financials 7%
- ● Utilities 6%
- ● No sector 3%
How its portfolio changed (8 quarters)
Q3 2026: 28
Q3 2026: 54%
Q3 2026: 34.5%
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.
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
Investment firm, per its Form ADV of Mar 20, 2026 (medium confidence).
The data, as reported: BLUE GROTTO CAPITAL, LLC (CRD 299869): Institutional mandates; 5.D assets by client type: charities 65%, pooled vehicles 35% (of $2.1 bn); 5.F 7 accounts, 0% non-discretionary; 5.D 7 clients, 0 individuals
The type comes from a rule applied to that data. If it looks wrong, tell us.
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Same type of filer and a 13F portfolio value between a third and three times this one. It is not a comparison of what they hold.
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