SA
Sunstone Asset Management, LP — 13F Portfolio Breakdown & Top Holdings (Q2 2026)
Sunstone Asset Management, LPCIK: 0002111996
Diversified strategyHigh-turnover traderSector-focused
Total reported value
$92.4M
Reporting period: 2026-06-30 · Number of holdings: 63
Sunstone Asset Management, LP disclosed 63 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $92.4M and a quarterly turnover rate of 95.7%.
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Personality snowflake
- Concentration
- 11.87
- Portfolio Stability
- 95.7
- Momentum
- 100
- Sector conviction
- 100
- Diversification
- 100
- Sizing Uniformity
- 91.61
Sunstone Asset Management, LP's disclosed holdings carry a Herfindahl concentration index of 0.030 — mathematically equivalent to about 34 equally-sized positions, well below its 63 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.84), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govSold out NVDA
New buy MKSI
Sold out MDB
New buy ASML
Sold out PANW
New buy GSAT
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 57 holdings (of 63 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | AMAT | Applied Materials Inc | Stock-Tech | 5.93% | +2.92% | +1.07% | |
| 2 | MKSI | Mks Inc | Stock-Tech | 5.59% | +5.59% | NEW | |
| 3 | MTSI | Macom Technology Solutions H | Stock-Tech | 4.80% | +1.08% | -18.23% | |
| 4 | GLW | Corning Inc | Stock-Tech | 4.71% | +2.29% | +12.40% | |
| 5 | DASH | Doordash Inc - A | Stock-Consumer Disc | 4.58% | +1.81% | +45.86% | |
| 6 | BILL 0 04-01-30Bond | Bill Holdings Inc | Bond | 4.37% | -0.51% | — | |
| 7 | SNPS | Synopsys Inc | Stock-Tech | 3.94% | +0.48% | +9.69% | |
| 8 | ASML | ASML Holding N.V. | Stock-Tech | 3.66% | +3.66% | NEW | |
| 9 | SNOW | Snowflake Inc | Stock-Tech | 3.31% | +2.04% | +66.67% | |
| 10 | GSAT | Globalstar Inc | Stock-Other | 2.95% | +2.95% | NEW | |
| 11 | TDS | Telephone And Data Systems | Stock-Comm Services | 2.83% | -0.66% | — | |
| 12 | APH | Amphenol Corp-cl A | Stock-Tech | 2.77% | +0.62% | — | |
| 13 | SE | Sea Ltd-adr | Stock-Comm Services | 2.72% | +1.40% | +92.55% | |
| 14 | V | Visa Inc-class A Shares | Stock-Financials | 2.71% | +0.12% | — | |
| 15 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 2.66% | +2.66% | NEW | |
| 16 | ADI | Analog Devices Inc | Stock-Tech | 2.58% | +1.68% | +150.00% | |
| 17 | U 0 11-15-26Bond | Unity Software Inc | Bond | 2.13% | -0.15% | — | |
| 18 | ANET | Arista Networks Inc | Stock-Tech | 1.91% | +1.91% | NEW | |
| 19 | EQIX | Equinix Inc | Stock-Real Estate | 1.86% | -0.54% | -21.10% | |
| 20 | NTNX | Nutanix Inc - A | Stock-Tech | 1.81% | +0.34% | — | |
| 21 | AMT | American Tower CORP | Stock-Real Estate | 1.76% | -0.25% | — | |
| 22 | ORCL | Oracle CORP | Stock-Tech | 1.67% | +0.72% | +90.91% | |
| 23 | CIEN | Ciena CORP | Stock-Tech | 1.61% | +1.61% | NEW | |
| 24 | STX | Seagate Technology Holdings plc | Stock-Tech | 1.55% | +1.55% | NEW | |
| 25 | SMCI 3.5 03-01-29Bond | Super Micro Computer Inc | Bond | 1.50% | +0.56% | +50.00% | |
| 26 | MDB | MongoDB, Inc. | Stock-Tech | 1.49% | +1.49% | NEW | |
| 27 | MRSH | Marsh & Mclennan Cos | Stock-Financials | 1.43% | -1.24% | -39.60% | |
| 28 | JOYY | Joyy Inc-adr | Stock-Other | 1.34% | +0.06% | — | |
| 29 | TER | Teradyne Inc | Stock-Tech | 1.22% | +1.22% | NEW | |
| 30 | NOW | Servicenow Inc | Stock-Tech | 1.21% | +0.22% | +39.85% | |
| 31 | KLAC | Kla CORP | Stock-Tech | 1.16% | -0.50% | +268.75% | |
| 32 | TWLO | Twilio Inc - A | Stock-Tech | 1.15% | -0.56% | -55.33% | |
| 33 | TCOM | Trip.com Group Ltd-adr | Stock-Consumer Disc | 1.13% | +0.56% | +171.13% | |
| 34 | SONY | Sony Group CORP - Sp Adr | Stock-Tech | 1.08% | -0.13% | — | |
| 35 | NET | Cloudflare Inc - Class A | Stock-Tech | 1.08% | +1.08% | NEW | |
| 36 | COHR | Coherent CORP | Stock-Tech | 1.03% | +1.02% | NEW | |
| 37 | GLD | Spdr Gold Shares | ETF-Commodities | 1.02% | -0.27% | — | |
| 38 | TWLO | Twilio Inc. | Stock-Tech | 1.02% | +1.02% | NEW | |
| 39 | NET | Cloudflare, Inc. | Stock-Tech | 0.97% | +0.97% | NEW | |
| 40 | SNOW | Snowflake Inc. | Stock-Tech | 0.90% | +0.90% | NEW | |
| 41 | SHOP | Shopify Inc - Class A | Stock-Tech | 0.89% | -0.11% | — | |
| 42 | OLED | Universal Display CORP | Stock-Tech | 0.86% | -0.13% | — | |
| 43 | ABNB | Airbnb Inc-class A | Stock-Consumer Disc | 0.77% | -1.71% | -70.06% | |
| 44 | SBAC | Sba Communications CORP | Stock-Real Estate | 0.76% | +0.76% | NEW | |
| 45 | GWRE | Guidewire Software Inc | Stock-Tech | 0.59% | +0.59% | NEW | |
| 46 | APP | AppLovin Corporation | Stock-Tech | 0.52% | +0.52% | NEW | |
| 47 | VOO | Vanguard S&P 500 ETF | ETF-Large Cap & Growth | 0.41% | +0.02% | — | |
| 48 | RBLX | Roblox Corporation | Stock-Comm Services | 0.39% | +0.39% | NEW | |
| 49 | S | Sentinelone Inc -class A | Stock-Tech | 0.37% | +0.07% | — | |
| 50 | RBLX | Roblox CORP -class A | Stock-Comm Services | 0.35% | -0.63% | -59.94% |
1–50 of 57
Portfolio Performance
Performance for Q3 2026
+2.8%
Performance Last 4 Quarters
+28.9%
Based on 89% of reported portfolio value with available pricing
- Stdev
- +38.7%
- Beta
- +1.71
- Alpha
- +15.8%
- Max Drawdown
- -10.8%
- Annualized Perf
- +66.1%
- Batting Avg vs S&P
- +66.7%
- Sortino
- +3.32
- Stutzer
- +0.47
- Treynor
- +0.34
- Sterling
- —
- Calmar
- +6.14
- Information Ratio
- +1.3
- Tracking Error
- +25.6%
- Stdev Down
- +17.5%
- Winning Months %
- +66.7%
- Losing Months %
- +33.3%
- Best 12 Months
- —
- Worst 12 Months
- —
- Efficiency Ratio
- +0.46
- Sharpe
- +1.5
- Stdev Sectors
- +27.1%
- Skewness
- -0.33
- Kurtosis
- -1.3
- Upside Potential
- +5.25
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
Holding changes this quarter
Sunstone Asset Management, LP's most significant position changes for 2026-06-30: Sold out: Nvidia CORP (NVDA); New buy: Mks Inc (MKSI); Sold out: Mongodb Inc (MDB); New buy: ASML Holding N.V. (ASML); Sold out: Palo Alto Networks Inc (PANW).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | MKSI | Mks Inc | +5.6% | NEW | New buy |
| 2 | ASML | ASML Holding N.V. | +3.7% | NEW | New buy |
| 3 | GSAT | Globalstar Inc | +3% | NEW | New buy |
| 4 | AMAT | Applied Materials Inc | +2.9% | +1.07% | Add |
| 5 | AMZN | Amazon.com Inc | +2.7% | NEW | New buy |
| 6 | GLW | Corning Inc | +2.3% | +12.40% | Add |
| 7 | SNOW | Snowflake Inc | +2% | +66.67% | Add |
| 8 | ANET | Arista Networks Inc | +1.9% | NEW | New buy |
| 9 | DASH | Doordash Inc - A | +1.8% | +45.86% | Add |
| 10 | ADI | Analog Devices Inc | +1.7% | +150.00% | Add |
| 11 | CIEN | Ciena CORP | +1.6% | NEW | New buy |
| 12 | STX | Seagate Technology Holdings plc | +1.6% | NEW | New buy |
| 13 | MDB | MongoDB, Inc. | +1.5% | NEW | New buy |
| 14 | SE | Sea Ltd-adr | +1.4% | +92.55% | Add |
| 15 | TER | Teradyne Inc | +1.2% | NEW | New buy |
| 16 | MTSI | Macom Technology Solutions H | +1.1% | -18.23% | Trim |
| 17 | NET | Cloudflare Inc - Class A | +1.1% | NEW | New buy |
| 18 | COHR | Coherent CORP | +1% | NEW | New buy |
| 19 | TWLO | Twilio Inc. | +1% | NEW | New buy |
| 20 | NET | Cloudflare, Inc. | +1% | NEW | New buy |
| 21 | SNOW | Snowflake Inc. | +0.9% | NEW | New buy |
| 22 | SBAC | Sba Communications CORP | +0.8% | NEW | New buy |
| 23 | ORCL | Oracle CORP | +0.7% | +90.91% | Add |
| 24 | APH | Amphenol Corp-cl A | +0.6% | — | Unchanged |
| 25 | GWRE | Guidewire Software Inc | +0.6% | NEW | New buy |
| 26 | SMCI 3.5 03-01-29Bond | Super Micro Computer Inc | +0.6% | +50.00% | Add |
| 27 | TCOM | Trip.com Group Ltd-adr | +0.6% | +171.13% | Add |
| 28 | APP | AppLovin Corporation | +0.5% | NEW | New buy |
| 29 | SNPS | Synopsys Inc | +0.5% | +9.69% | Add |
| 30 | RBLX | Roblox Corporation | +0.4% | NEW | New buy |
| 31 | NTNX | Nutanix Inc - A | +0.3% | — | Unchanged |
| 32 | NOW | Servicenow Inc | +0.2% | +39.85% | Add |
| 33 | ✓ | Guidewire Software Inc | +0.2% | NEW | New buy |
| 34 | META | Meta Platforms, Inc. | +0.2% | NEW | New buy |
| 35 | V | Visa Inc-class A Shares | +0.1% | — | Unchanged |
| 36 | ETSY | Etsy, Inc. | +0.1% | — | Unchanged |
| 37 | ORCL | Oracle Corporation | +0.1% | NEW | New buy |
| 38 | ZIP | Ziprecruiter Inc-a | +0.1% | — | Unchanged |
| 39 | S | Sentinelone Inc -class A | +0.1% | — | Unchanged |
| 40 | JOYY | Joyy Inc-adr | +0.1% | — | Unchanged |
| 41 | VOO | Vanguard S&P 500 ETF | 0% | — | Unchanged |
| 42 | ✓ | Nutanix Inc | 0% | — | Unchanged |
| 43 | FIVN 1 03-15-29Bond | Five9 Inc | 0% | — | Unchanged |
| 44 | PANW | Palo Alto Networks, Inc. | 0% | EXIT | Sold out |
| 45 | ✓ | Maplebear Inc | 0% | EXIT | Sold out |
| 46 | EM | Smart Share Global LTD - Adr | -0.1% | EXIT | Sold out |
| 47 | SHOP | Shopify Inc - Class A | -0.1% | — | Unchanged |
| 48 | OLED | Universal Display CORP | -0.1% | — | Unchanged |
| 49 | SONY | Sony Group CORP - Sp Adr | -0.1% | — | Unchanged |
| 50 | U 0 11-15-26Bond | Unity Software Inc | -0.2% | — | Unchanged |
1–50 of 82
Filing History
FAQ
What is Sunstone Asset Management, LP and what type of investor is it?
Sunstone Asset Management, LP is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $92.4M, spread across 63 disclosed positions.
What are Sunstone Asset Management, LP's largest equity positions?
Based on the latest 13F filing, Sunstone Asset Management, LP's top holdings by market value are:
1. Applied Materials Inc (AMAT) — $5.5M (5.9%)
2. Mks Inc (MKSI) — $5.2M (5.6%)
3. Macom Technology Solutions H (MTSI) — $4.4M (4.8%)
4. Corning Inc (GLW) — $4.4M (4.7%)
5. Doordash Inc - A (DASH) — $4.2M (4.6%)
What changes did Sunstone Asset Management, LP make in its most recent portfolio filing?
In the latest reported quarter, Sunstone Asset Management, LP made 64 notable position adjustments: 21 new positions were initiated, 12 existing holdings were added to, 6 positions were partially reduced, and 25 were completely exited. The largest of these moves: Sold out: Nvidia CORP (NVDA); New buy: Mks Inc (MKSI); Sold out: Mongodb Inc (MDB); New buy: ASML Holding N.V. (ASML); Sold out: Palo Alto Networks Inc (PANW)
What sectors does Sunstone Asset Management, LP focus on?
Sunstone Asset Management, LP is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 74.1%
• Consumer Discretionary: 9.9%
• Communication Services: 6.9%
• Real Estate: 4.7%
• Financials: 4.4%
Investment Profile
Sunstone Asset Management, LP returned an annualized 66.1% over the trailing 6 months — outperforming the S&P 500 by 15.8 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.71 (more volatile than the market) and a 67% quarterly batting average against the index.
Its portfolio is broadly diversified and fast-trading, with 74.1% of the portfolio concentrated in Information Technology.
Its turnover score has risen from 0 to 96 over the past 2 quarters — a shift toward more active trading.
It has added to its AMAT position over the past two quarters (+$4.7M, now $5.5M), while trimming ABNB over the same stretch (-$1.6M, still holding $715.5K).
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