Sunstone Asset Management, L.P. — 13F Holdings & Portfolio
CIK 2111996 · latest 13F-HR filed 2026-05-14
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
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AUM
$85.2M
Long-equity book
Holdings
64
Distinct positions
Period
2026-03-31
Filed 2026-05-14
Q/Q Activity
+18 / −12 / ↑15 / ↓13
vs 2025-12-31
Firm Profile & Key People
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- APPLIED MATLS INC$1.8M +221.8%
- MONGODB INC$1.6M +71.1%
- NVIDIA CORPORATION$1.5M +39.3%
- BILL HOLDINGS INC$1.4M +50.2%
- MACOM TECH SOLUTIONS HLDGS I$981.2K +44.9%
Top Trims
- BROADCOM INC-$971.3K -53.5%
- DOORDASH INC-$781.7K -24.9%
- VISA INC-$353.8K -13.8%
- NUTANIX INC-$295.4K -19.1%
- SERVICENOW INC-$278.8K -24.9%
New Positions
- PALO ALTO NETWORKS INC$2.7M
- ADVANCED MICRO DEVICES INC$2.3M
- CORNING INC$2.1M
- AMPHENOL CORP$1.8M
- KLA CORP$1.4M
Exited Positions
- IQIYI INC$31.0M
- CYBERARK SOFTWARE LTD$3.8M
- CONFLUENT INC$2.2M
- MONDAY COM LTD$1.7M
- TEXAS INSTRS INC$1.4M
All Holdings
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | NVIDIA CORPORATION | NVDA | 67066G104 | $5.3M | 6.23% | 30,441 | SH |
| 2 | BILL HOLDINGS INC | BILL | 090043AF7 | $4.2M | 4.88% | 4,660,000 | PRN |
| 3 | MONGODB INC | MDB | 60937P106 | $3.9M | 4.60% | 15,996 | SH |
| 4 | MACOM TECH SOLUTIONS HLDGS I | MTSI | 55405Y100 | $3.2M | 3.72% | 14,261 | SH |
| 5 | TELEPHONE & DATA SYS INC | TDS | 879433829 | $3.0M | 3.49% | 70,604 | SH |
| 6 | SYNOPSYS INC | SNPS | 871607107 | $2.9M | 3.46% | 7,430 | SH |
| 7 | PALO ALTO NETWORKS INC | PANW | 697435105 | $2.7M | 3.22% | 17,113 | SH |
| 8 | APPLIED MATLS INC | AMAT | 038222105 | $2.6M | 3.01% | 7,500 | SH |
| 9 | DOORDASH INC | DASH | 25809K105 | $2.4M | 2.77% | 15,700 | SH |
| 10 | MARSH & MCLENNAN COS INC | MRSH | 571748102 | $2.3M | 2.67% | 13,132 | SH |
| 11 | ADVANCED MICRO DEVICES INC | AMD | 007903107 | $2.3M | 2.65% | 11,096 | SH |
| 12 | VISA INC | V | 92826C839 | $2.2M | 2.59% | 7,300 | SH |
| 13 | MICROSOFT CORP | MSFT | 594918104 | $2.2M | 2.56% | 5,900 | SH |
| 14 | AIRBNB INC | ABNB | 009066101 | $2.1M | 2.48% | 16,700 | SH |
| 15 | CORNING INC | GLW | 219350105 | $2.1M | 2.42% | 15,171 | SH |
| 16 | EQUINIX INC | EQIX | 29444U700 | $2.0M | 2.40% | 2,085 | SH |
| 17 | FLEXTRONICS INTL LTD | FLEX | Y2573F102 | $2.0M | 2.33% | 30,274 | SH |
| 18 | UNITY SOFTWARE INC | U | 91332UAB7 | $1.9M | 2.28% | 2,000,000 | PRN |
| 19 | AMPHENOL CORP | APH | 032095101 | $1.8M | 2.15% | 14,500 | SH |
| 20 | AMERICAN TOWER CORP | AMT | 03027X100 | $1.7M | 2.01% | 9,914 | SH |
| 21 | SANDISK CORP | SNDK | 80004C200 | $1.7M | 1.94% | 2,600 | SH |
| 22 | NETFLIX INC. | NFLX | 64110L106 | $1.5M | 1.81% | 16,000 | SH |
| 23 | TWILIO INC | TWLO | 90138F102 | $1.5M | 1.71% | 11,566 | SH |
| 24 | KLA CORP | KLAC | 482480100 | $1.4M | 1.66% | 960 | SH |
| 25 | ALPHABET INC | GOOG | 02079K107 | $1.3M | 1.57% | 4,647 | SH |
| 26 | NOKIA CORP | NOK | 654902204 | $1.3M | 1.56% | 164,800 | SH |
| 27 | NUTANIX INC | NTNX | 67059N108 | $1.3M | 1.47% | 32,890 | SH |
| 28 | INTUIT | INTU | 461202103 | $1.2M | 1.46% | 2,880 | SH |
| 29 | TTM TECHNOLOGIES INC | TTMI | 87305R109 | $1.2M | 1.38% | 12,100 | SH |
| 30 | SEA LTD | SE | 81141R100 | $1.1M | 1.32% | 13,614 | SH |
| 31 | CELESTICA INC | CLS | 15101Q207 | $1.1M | 1.32% | 3,998 | SH |
| 32 | SPDR GOLD TR | GLD | 78463V107 | $1.1M | 1.29% | 2,560 | SH |
| 33 | JOYY INC | JOYY | 46591M109 | $1.1M | 1.28% | 18,705 | SH |
| 34 | SNOWFLAKE INC | SNOW | 833445109 | $1.1M | 1.27% | 7,200 | SH |
| 35 | SONY GROUP CORP | SONY | 835699307 | $1.0M | 1.21% | 49,626 | SH |
| 36 | RAMBUS INC DEL | RMBS | 750917106 | $1.0M | 1.19% | 11,746 | SH |
| 37 | ETSY INC | ETSY | 29786AAJ5 | $977.8K | 1.15% | 1,000,000 | PRN |
| 38 | UNITY SOFTWARE INC | U | 91332U101 | $941.2K | 1.11% | 42,900 | SH |
| 39 | SUPER MICRO COMPUTER INC | SMCI | 86800UAD6 | $871.6K | 1.02% | 1,000,000 | PRN |
| 40 | SHOPIFY INC | SHOP | 82509L107 | $852.9K | 1.00% | 7,190 | SH |
| 41 | UNIVERSAL DISPLAY CORP | OLED | 91347P105 | $844.8K | 0.99% | 9,217 | SH |
| 42 | BROADCOM INC | AVGO | 11135F101 | $842.6K | 0.99% | 2,721 | SH |
| 43 | SERVICENOW INC | NOW | 81762P102 | $839.5K | 0.99% | 8,030 | SH |
| 44 | ROBLOX CORP | RBLX | 771049103 | $833.1K | 0.98% | 14,729 | SH |
| 45 | ORACLE CORP | ORCL | 68389X105 | $809.2K | 0.95% | 5,500 | SH |
| 46 | SUPER MICRO COMPUTER INC | SMCI | 86800UAB0 | $799.9K | 0.94% | 1,000,000 | PRN |
| 47 | ANALOG DEVICES INC | ADI | 032654105 | $763.5K | 0.90% | 2,400 | SH |
| 48 | ETSY INC | ETSY | 29786A106 | $544.8K | 0.64% | 10,900 | SH |
| 49 | ZSCALER INC | ZS | 98980G102 | $527.5K | 0.62% | 3,760 | SH |
| 50 | TRIP COM GROUP LTD | TCOM | 89677Q107 | $483.0K | 0.57% | 9,700 | SH |
Filing History
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-14 | $85.2M | 64 | 0000912282-26-000730 |
| 2025-12-31 | 2026-02-18 | $104.4M | 61 | 0000912282-26-000350 |