Sunstone Asset Management, LP: 13F holdings, Q2 2026
Hedge fund · SEC EDGAR filings (CIK 2111996) · Explore on the interactive board
Sunstone Asset Management, LP disclosed 57 US equity positions worth $92.4m in its Q2 2026 13F filing (holdings as of June 30, 2026, filed August 14, 2026). Its largest position is AMAT at 5.9% of the reported book, followed by MKSI, MTSI. The top ten holdings are 43.8% of the book, and the portfolio behaves like about 34 equal-weight positions. Versus the prior filing it opened 23 new positions, added to 12, reduced 6 and exited 22. Note: this manager's most recent filing is 3934 quarters behind the newest quarter on file, so these figures are history rather than current positioning.
What does Sunstone Asset Management, LP own? Top holdings as of June 30, 2026
Change is measured in shares against the previous filing (Q1 2026), so price moves do not read as decisions. This quarter: 23 new, 12 added, 6 reduced, 22 exited.
| # | Stock | Sector | Weight | Value | Shares | Δ shares | Action |
|---|---|---|---|---|---|---|---|
| 1 | AMAT APPLIED MATLS INC | Technology | 5.9% | $5.5m | 7,580 | 1% | added |
| 2 | MKSI MKS INSTRUMENTS INC | Technology | 5.6% | $5.2m | 11,600 | – | new |
| 3 | MTSI MACOM TECH SOLUTIONS HLDGS I | Technology | 4.8% | $4.4m | 11,661 | -18% | reduced |
| 4 | GLW CORNING INC | Technology | 4.7% | $4.4m | 17,052 | 12% | added |
| 5 | DASH DOORDASH INC | Consumer Cyclical | 4.6% | $4.2m | 22,900 | 46% | added |
| 6 | BILL BILL HOLDINGS INC | Technology | 4.4% | $4.0m | 4,660,000 | 0% | held |
| 7 | SNPS SYNOPSYS INC | Technology | 3.9% | $3.6m | 8,150 | 10% | added |
| 8 | ASML ASML HOLDING N V | Technology | 3.7% | $3.4m | 1,700 | – | new |
| 9 | SNOW SNOWFLAKE INC | Technology | 3.3% | $3.1m | 12,000 | 67% | added |
| 10 | GSAT GLOBALSTAR INC | Communication Services | 2.9% | $2.7m | 33,500 | – | new |
| 11 | TDS TELEPHONE & DATA SYS INC | Communication Services | 2.8% | $2.6m | 70,604 | 0% | held |
| 12 | APH AMPHENOL CORP | Technology | 2.8% | $2.6m | 14,500 | 0% | held |
| 13 | SE SEA LTD | Consumer Cyclical | 2.7% | $2.5m | 26,214 | 93% | added |
| 14 | V VISA INC | Financial Services | 2.7% | $2.5m | 7,300 | 0% | held |
| 15 | AMZN AMAZON COM INC | Consumer Cyclical | 2.7% | $2.5m | 10,300 | – | new |
| 16 | ADI ANALOG DEVICES INC | Technology | 2.6% | $2.4m | 6,000 | 150% | added |
| 17 | U UNITY SOFTWARE INC | Technology | 2.1% | $2.0m | 2,000,000 | 0% | held |
| 18 | ANET ARISTA NETWORKS INC | Technology | 1.9% | $1.8m | 10,400 | – | new |
| 19 | EQIX EQUINIX INC | Real Estate | 1.9% | $1.7m | 1,645 | -21% | reduced |
| 20 | NTNX NUTANIX INC | Technology | 1.8% | $1.7m | 32,890 | 0% | held |
| 21 | AMT AMERICAN TOWER CORP | Real Estate | 1.8% | $1.6m | 9,914 | 0% | held |
| 22 | ORCL ORACLE CORP | Technology | 1.7% | $1.5m | 10,500 | 91% | added |
| 23 | CIEN CIENA CORP | Technology | 1.6% | $1.5m | 3,040 | – | new |
| 24 | STX SEAGATE TECHNOLOGY HLDNGS PL | Technology | 1.5% | $1.4m | 1,480 | – | new |
| 25 | SUPER MICRO COMPUTER INC | 1.5% | $1.4m | 1,500,000 | 50% | added | |
| 26 | MONGODB INC | 1.5% | $1.4m | 20,000 | – | new | |
| 27 | MRSH MARSH & MCLENNAN COS INC | Financial Services | 1.4% | $1.3m | 7,932 | -40% | reduced |
| 28 | JOYY JOYY INC | Communication Services | 1.3% | $1.2m | 18,705 | 0% | held |
| 29 | TER TERADYNE INC | Technology | 1.2% | $1.1m | 2,320 | – | new |
| 30 | NOW SERVICENOW INC | Technology | 1.2% | $1.1m | 11,230 | 40% | added |
| 31 | KLAC KLA CORP | Technology | 1.2% | $1.1m | 3,540 | 269% | added |
| 32 | TWLO TWILIO INC | Technology | 1.2% | $1.1m | 5,166 | -55% | reduced |
| 33 | TCOM TRIP COM GROUP LTD | Consumer Cyclical | 1.1% | $1.0m | 26,300 | 171% | added |
| 34 | SONY SONY GROUP CORP | Technology | 1.1% | $995.5k | 49,626 | 0% | held |
| 35 | NET CLOUDFLARE INC | Technology | 1.1% | $993.5k | 4,046 | – | new |
| 36 | COHR COHERENT CORP | Technology | 1.0% | $946.7k | 2,400 | – | new |
| 37 | GLD SPDR GOLD TR | 1.0% | $943.1k | 2,560 | 0% | held | |
| 38 | TWILIO INC | 1.0% | $939.0k | 15,000 | – | new | |
| 39 | CLOUDFLARE INC | 1.0% | $898.1k | 13,800 | – | new | |
| 40 | SNOWFLAKE INC | 0.9% | $828.2k | 10,000 | – | new | |
| 41 | SHOP SHOPIFY INC | Technology | 0.9% | $821.0k | 7,190 | 0% | held |
| 42 | OLED UNIVERSAL DISPLAY CORP | Technology | 0.9% | $798.1k | 9,217 | 0% | held |
| 43 | ABNB AIRBNB INC | Consumer Cyclical | 0.8% | $715.5k | 5,000 | -70% | reduced |
| 44 | SBAC SBA COMMUNICATIONS CORP | Real Estate | 0.8% | $705.8k | 4,000 | – | new |
| 45 | GWRE GUIDEWIRE SOFTWARE INC | Technology | 0.6% | $541.4k | 4,400 | – | new |
| 46 | APPLOVIN CORP | 0.5% | $480.8k | 5,000 | – | new | |
| 47 | ESTC ELASTIC N V | Technology | 0.4% | $376.3k | 6,600 | 0% | held |
| 48 | ROBLOX CORP | 0.4% | $363.6k | 40,000 | – | new | |
| 49 | S SENTINELONE INC | Technology | 0.4% | $339.4k | 20,000 | 0% | held |
| 50 | RBLX ROBLOX CORP | Communication Services | 0.3% | $321.0k | 5,900 | -60% | reduced |
What did Sunstone Asset Management, LP sell? Positions exited since the previous filing
| Stock | Prior weight | Prior value |
|---|---|---|
| NVDA NVIDIA CORPORATION | 15.7% | $5.3m |
| MDB MONGODB INC | 11.5% | $3.9m |
| PANW PALO ALTO NETWORKS INC | 8.1% | $2.7m |
| AMD ADVANCED MICRO DEVICES INC | 6.7% | $2.3m |
| MSFT MICROSOFT CORP | 6.4% | $2.2m |
| FLEX FLEXTRONICS INTL LTD | 5.8% | $2.0m |
| SNDK SANDISK CORP | 4.9% | $1.7m |
| NFLX NETFLIX INC. | 4.5% | $1.5m |
| GOOG ALPHABET INC | 3.9% | $1.3m |
| NOK NOKIA CORP | 3.9% | $1.3m |
| INTU INTUIT | 3.7% | $1.2m |
| TTMI TTM TECHNOLOGIES INC | 3.5% | $1.2m |
| CLS CELESTICA INC | 3.3% | $1.1m |
| RMBS RAMBUS INC DEL | 3.0% | $1.0m |
| ETSY ETSY INC | 2.9% | $977.8k |
| U UNITY SOFTWARE INC | 2.8% | $941.2k |
| SUPER MICRO COMPUTER INC | 2.6% | $871.6k |
| AVGO BROADCOM INC | 2.5% | $842.6k |
| ETSY ETSY INC | 1.6% | $544.8k |
| ZS ZSCALER INC | 1.6% | $527.5k |
| ZM ZOOM COMMUNICATIONS INC | 1.0% | $337.6k |
| EM SMART SH GLOBAL LTD | 0.2% | $55.3k |
Sector mix
| Sector | Weight |
|---|---|
| Technology | 63.4% |
| Consumer Cyclical | 11.9% |
| Communication Services | 7.6% |
| Real Estate | 4.4% |
| Financial Services | 4.1% |
Sectors cover positions whose ticker resolved to a sector; the remainder is unclassified, not cash.
Filing history
How concentrated is Sunstone Asset Management, LP's portfolio?
Across every quarter Sunstone Asset Management, LP has filed, its median largest position is 6.1% of the book and its median top-ten weight is 41.4%, which WhaleCreep classifies as concentrated (the gate is a median largest position of 5%). Of 20.0 completed holding spells, the median lasted 1.0 quarters; 57.0 positions are still open and their final length is unknown.