CIK: 0002111996
Total reported value
$85.2M
Reporting period: 2026-03-31 · Number of holdings: 64
Sunstone Asset Management, L.P. disclosed 64 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $85.2M and a quarterly turnover rate of 86.3%.
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Sunstone Asset Management, L.P.'s disclosed holdings carry a Herfindahl concentration index of 0.026 — mathematically equivalent to about 38 equally-sized positions, well below its 64 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 0.78), 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.
Add NVDA
+48.9% $1.5M
Add MDB
+193.5% $1.6M
Add AMAT
+141.9% $1.8M
Add BILL 0 04-01-30
+55.3% $1.4M
Add MTSI
+11.8% $981.2K
Add SNDK
-13.3% $939.7K
Showing top 61 holdings (of 64 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | Stock-Tech | 6.23% | +2.58% | +48.92% | |
| 2 | BILL 0 04-01-30 | Bill Holdings INC | Stock-Tech | 4.88% | +2.23% | +55.33% | |
| 3 | MDB | Mongodb INC | Stock-Tech | 4.60% | +2.41% | +193.45% | |
| 4 | MTSI | Macom Technology Solutions H | Stock-Tech | 3.72% | +1.63% | +11.75% | |
| 5 | TDS | Telephone And Data Systems | Stock-Comm Services | 3.49% | — | — | |
| 6 | SNPS | Synopsys INC | Stock-Tech | 3.46% | +1.21% | +48.30% | |
| 7 | PANW | Palo Alto Networks INC | Stock-Tech | 3.22% | +3.22% | NEW | |
| 8 | AMAT | Applied Materials INC | Stock-Tech | 3.01% | +2.25% | +141.94% | |
| 9 | DASH | Doordash INC - A | Stock-Consumer Disc | 2.77% | -0.24% | +13.28% | |
| 10 | MRSH | Marsh & Mclennan Cos | Stock-Financials | 2.67% | — | — | |
| 11 | AMD | Advanced Micro Devices | Stock-Tech | 2.65% | +2.65% | NEW | |
| 12 | V | Visa Inc-class A Shares | Stock-Financials | 2.59% | +0.14% | — | |
| 13 | MSFT | Microsoft CORP | Stock-Tech | 2.56% | — | +20.41% | |
| 14 | ABNB | Airbnb Inc-class A | Stock-Consumer Disc | 2.48% | — | — | |
| 15 | GLW | Corning INC | Stock-Tech | 2.42% | +2.42% | NEW | |
| 16 | EQIX | Equinix INC | Stock-Real Estate | 2.40% | +0.87% | — | |
| 17 | FLEX | Flex Ltd. | Stock-Tech | 2.33% | — | -9.69% | |
| 18 | U 0 11-15-26 | Unity Software INC | Stock-Tech | 2.28% | — | — | |
| 19 | APH | Amphenol Corp-cl A | Stock-Tech | 2.15% | +2.15% | NEW | |
| 20 | AMT | American Tower CORP | Stock-Real Estate | 2.01% | — | — | |
| 21 | SNDK | Sandisk CORP | Stock-Tech | 1.94% | +1.26% | -13.33% | |
| 22 | NFLX | Netflix INC | Stock-Comm Services | 1.81% | — | — | |
| 23 | TWLO | Twilio INC - A | Stock-Tech | 1.71% | — | +10.00% | |
| 24 | KLAC | Kla CORP | Stock-Tech | 1.66% | +1.66% | NEW | |
| 25 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 1.57% | — | +27.42% | |
| 26 | NOK | Nokia Corp-spon Adr | Stock-Tech | 1.56% | +1.56% | NEW | |
| 27 | NTNX | Nutanix INC - A | Stock-Tech | 1.47% | -0.01% | +10.00% | |
| 28 | INTU | Intuit INC | Stock-Tech | 1.46% | +1.46% | NEW | |
| 29 | TTMI | Ttm Technologies | Stock-Tech | 1.38% | +0.48% | -10.87% | |
| 30 | SE | Sea Ltd-adr | Stock-Comm Services | 1.32% | +0.51% | +105.84% | |
| 31 | CLS | Celestica INC | Stock-Tech | 1.32% | — | — | |
| 32 | GLD | Spdr Gold Shares | ETF-Commodities | 1.29% | +0.46% | +16.89% | |
| 33 | JOYY | Joyy Inc-adr | Stock-Other | 1.28% | — | +34.52% | |
| 34 | SNOW | Snowflake INC | Stock-Tech | 1.27% | +1.27% | NEW | |
| 35 | SONY | Sony Group CORP - Sp Adr | Stock-Tech | 1.21% | — | +42.09% | |
| 36 | RMBS | Rambus INC | Stock-Tech | 1.19% | +1.19% | NEW | |
| 37 | ETSY 0.125 10-01-26 | Etsy INC | Stock-Consumer Disc | 1.15% | — | — | |
| 38 | U | Unity Software INC | Stock-Tech | 1.11% | +1.11% | NEW | |
| 39 | SMCI 2.25 07-15-28 | Super Micro Computer INC | Stock-Tech | 1.02% | +1.02% | NEW | |
| 40 | SHOP | Shopify INC - Class A | Stock-Tech | 1.00% | — | +46.73% | |
| 41 | OLED | Universal Display CORP | Stock-Tech | 0.99% | — | — | |
| 42 | AVGO | Broadcom INC | Stock-Tech | 0.99% | -0.75% | -48.08% | |
| 43 | NOW | Servicenow INC | Stock-Tech | 0.99% | -0.08% | +10.00% | |
| 44 | RBLX | Roblox CORP -class A | Stock-Comm Services | 0.98% | +0.98% | NEW | |
| 45 | ORCL | Oracle CORP | Stock-Tech | 0.95% | — | +10.00% | |
| 46 | SMCI 3.5 03-01-29 | Super Micro Computer INC | Stock-Tech | 0.94% | — | — | |
| 47 | ADI | Analog Devices INC | Stock-Tech | 0.90% | +0.90% | NEW | |
| 48 | ETSY | Etsy INC | Stock-Consumer Disc | 0.64% | — | — | |
| 49 | ZS | Zscaler INC | Stock-Tech | 0.62% | +0.62% | NEW | |
| 50 | TCOM | Trip.com Group Ltd-adr | Stock-Consumer Disc | 0.57% | +0.57% | NEW |
Performance for Q3 2026
-6.6%
Performance Last 4 Quarters
-6.6%
Based on 2 months of available history
Based on 63% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 64 | $85.2M | 86 | |
| 2025-12-31 | 61 | $104.4M | 0 |
Sunstone Asset Management, L.P.'s most significant position changes for 2026-03-31: Sold out: iQIYI, Inc. (IQ); Sold out: Cyberark Software LTD; New buy: Palo Alto Networks INC (PANW); New buy: Advanced Micro Devices (AMD); Sold out: Confluent INC (CFLT 0 01-15-27).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | +2.6% | +48.92% | Add |
| 2 | MDB | Mongodb INC | +2.4% | +193.45% | Add |
| 3 | AMAT | Applied Materials INC | +2.3% | +141.94% | Add |
| 4 | BILL 0 04-01-30 | Bill Holdings INC | +2.2% | +55.33% | Add |
| 5 | MTSI | Macom Technology Solutions H | +1.6% | +11.75% | Add |
| 6 | SNDK | Sandisk CORP | +1.3% | -13.33% | Trim |
| 7 | SNPS | Synopsys INC | +1.2% | +48.30% | Add |
| 8 | EQIX | Equinix INC | +0.9% | — | Unchanged |
| 9 | SE | Sea Ltd-adr | +0.5% | +105.84% | Add |
| 10 | TTMI | Ttm Technologies | +0.5% | -10.87% | Trim |
| 11 | GLD | Spdr Gold Shares | +0.5% | +16.89% | Add |
| 12 | V | Visa Inc-class A Shares | +0.1% | — | Unchanged |
| 13 | NTNX | Nutanix INC - A | 0% | +10.00% | Add |
| 14 | NOW | Servicenow INC | -0.1% | +10.00% | Add |
| 15 | DASH | Doordash INC - A | -0.2% | +13.28% | Add |
| 16 | ✓ | Maplebear INC | -0.4% | — | Unchanged |
| 17 | AVGO | Broadcom INC | -0.8% | -48.08% | Trim |
| 18 | IQ | iQIYI, Inc. | — | EXIT | Sold out |
| 19 | ✓ | Cyberark Software LTD | — | EXIT | Sold out |
| 20 | PANW | Palo Alto Networks INC | — | NEW | New buy |
| 21 | AMD | Advanced Micro Devices | — | NEW | New buy |
| 22 | CFLT 0 01-15-27 | Confluent INC | — | EXIT | Sold out |
| 23 | GLW | Corning INC | — | NEW | New buy |
| 24 | APH | Amphenol Corp-cl A | — | NEW | New buy |
| 25 | MNDY | monday.com Ltd. | — | EXIT | Sold out |
| 26 | TXN | Texas Instruments INC | — | EXIT | Sold out |
| 27 | KLAC | Kla CORP | — | NEW | New buy |
| 28 | NOK | Nokia Corp-spon Adr | — | NEW | New buy |
| 29 | INTU | Intuit INC | — | NEW | New buy |
| 30 | SNOW | Snowflake INC | — | NEW | New buy |
| 31 | RMBS | Rambus INC | — | NEW | New buy |
| 32 | ✓ | Teradyne INC | — | EXIT | Sold out |
| 33 | U | Unity Software INC | — | NEW | New buy |
| 34 | SMCI 2.25 07-15-28 | Super Micro Computer INC | — | NEW | New buy |
| 35 | FORM | Formfactor INC | — | EXIT | Sold out |
| 36 | RBLX | Roblox CORP -class A | — | NEW | New buy |
| 37 | ADI | Analog Devices INC | — | NEW | New buy |
| 38 | TTD | Trade Desk Inc/the -class A | — | EXIT | Sold out |
| 39 | 8QR | Confluent Inc-class A | — | EXIT | Sold out |
| 40 | ZS | Zscaler INC | — | NEW | New buy |
| 41 | TCOM | Trip.com Group Ltd-adr | — | NEW | New buy |
| 42 | DDOG | Datadog INC - Class A | — | EXIT | Sold out |
| 43 | BE | Bloom Energy Corp- A | — | EXIT | Sold out |
| 44 | SMCI | Super Micro Computer INC | — | EXIT | Sold out |
| 45 | MDB | MongoDB, Inc. | — | EXIT | Sold out |
| 46 | ZM | Zoom Communications INC | — | NEW | New buy |
| 47 | KVYO | Klaviyo Inc-a | — | EXIT | Sold out |
| 48 | VOO | Vanguard S&P 500 ETF | — | NEW | New buy |
| 49 | S | Sentinelone INC -class A | — | NEW | New buy |
| 50 | ✓ | Confluent INC | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-14 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-18 | 13F-HR | View on EDGAR |
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