Sunstone Asset Management, L.P.
Sector Allocation
- Technology68.7%$63.4M
- Consumer Discretionary8.4%$7.7M
- Communication Services5.8%$5.3M
- Financials5.2%$4.8M
- Materials4.7%$4.4M
- Real Estate4.4%$4.0M
- Industrials2.9%$2.7M
AUM History
13fpro.ai/research/fund/sunstone-asset-management-l-p-2111996
Conviction and streaks
Concentrating · top 10 = 43.8%From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.
Largest positions — Q2 2026
AMAT
$5.5MMKSI
$5.2MMTSI
$4.4MGLW
$4.4MDASH
$4.2MBILL
$4.0MSNPS
$3.6MASML
$3.4MSNOW
$3.1MGSAT
$2.7MTDS
$2.6MAPH
$2.6MSE
$2.5MV
$2.5MAMZN
$2.5MADI
$2.4MU
$2.0MANET
$1.8MEQIX
$1.7MNTNX
$1.7M
Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.
13fpro.ai/research/fund/sunstone-asset-management-l-p-2111996
Sunstone Asset Management, L.P. 13F holdings — Q2 2026
$92.4M portfolio (+8.4% QoQ) · 57 holdings · Q2 2026 13F · top 10 are 44% of the stock portfolio
$5.5M
5.9% of stocks
+1%This quarter-23.6%Since filed3+ qtrsHeld$5.2M
5.6% of stocks
NewThis quarter-34.9%Since filedNew this quarterHeld$4.4M
4.8% of stocks
-18%This quarter-23.0%Since filed3+ qtrsHeld$4.4M
4.7% of stocks
+12%This quarter-23.0%Since filed2 qtrsHeld$4.2M
4.6% of stocks
+46%This quarter-22.4%Since filed3+ qtrsHeld$4.0M
4.4% of stocks
No changeThis quarter+0.3%Since filed3+ qtrsHeld$3.6M
3.9% of stocks
+10%This quarter+7.8%Since filed3+ qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialAdded 2 qtrs in a row$3.4M
3.7% of stocks
NewThis quarter-13.7%Since filedNew this quarterHeld$3.1M
3.3% of stocks
+67%This quarter+1.8%Since filed2 qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialAdded 2 qtrs in a row$2.7M
3.0% of stocks
NewThis quarter+0.6%Since filedNew this quarterHeld
All holdings — Sunstone Asset Management, L.P. (Q2 2026)
57 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.
| # | Company | Held | Source | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 | TELEPHONE & DATA SYSTEMS INC /DE/ | Communication Services | $2.6M | 2.8% | 71K | — | 3+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 12 | AMPHENOL CORP /DE/ | Technology | $2.6M | 2.8% | 15K | — | 2 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 13 | Sea Ltdadr | Industrials | $2.5M | 2.7% | 26K | +93% | 3+ qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 14 | VISA INC. | Financials | $2.5M | 2.7% | 7,300 | — | 3+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 15 | AMAZON COM INC | Consumer Discretionary | $2.5M | 2.7% | 10K | New | 1 qtr | AI quality score is Pro: unlock with a free trial | 13F | |
| 16 | ANALOG DEVICES INC | Technology | $2.4M | 2.6% | 6,000 | +150% | 2 qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 17 | Unity Software Inc.note | Technology | $2.0M | 2.1% | 2.00M | — | 3+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 18 | Arista Networks, Inc. | Technology | $1.8M | 1.9% | 10K | New | 1 qtr | AI quality score is Pro: unlock with a free trial | 13F | |
| 19 | EQUINIX INC | Real Estate | $1.7M | 1.9% | 1,645 | -21% | 3+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 20 | Nutanix, Inc. | Technology | $1.7M | 1.8% | 33K | — | 3+ qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 21 | AMERICAN TOWER CORP /MA/ | Real Estate | $1.6M | 1.8% | 9,914 | — | 3+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 22 | ORACLE CORP | Technology | $1.5M | 1.7% | 11K | +91% | 3+ qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 23 | CIENA CORP | Technology | $1.5M | 1.6% | 3,040 | New | 1 qtr | AI quality score is Pro: unlock with a free trial | 13F | |
| 24 | Seagate Technology Holdings plc | Technology | $1.4M | 1.6% | 1,480 | New | 1 qtr | AI quality score is Pro: unlock with a free trial | 13F | |
| 25 | Super Micro Computer, Inc.note | Technology | $1.4M | 1.5% | 1.50M | +50% | 3+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 26 | $MDB | MongoDB, Inc. | Technology | $1.4M | 1.5% | 20K | +25% | |||
| 27 | $MRSH | MARSH & MCLENNAN COMPANIES, INC. | Financials | $1.3M | 1.4% | 7,932 | -40% | |||
| 28 | $JOYY | JOYY Inc. | Technology | $1.2M | 1.3% | 19K | — | |||
| 29 | $TER | TERADYNE, INC | Technology | $1.1M | 1.2% | 2,320 | New | |||
| 30 | $NOW | ServiceNow, Inc. | Technology | $1.1M | 1.2% | 11K | +40% | |||
| 31 | $KLAC | KLA CORP | Technology | $1.1M | 1.2% | 3,540 | +269% | |||
| 32 | $TWLO | TWILIO INC | Technology | $1.1M | 1.1% | 5,166 | -55% | |||
| 33 | $TCOM | Trip.com Group Ltd | Consumer Discretionary | $1.0M | 1.1% | 26K | +171% | |||
| 34 | $SONY | Sony Group Corp | Technology | $995K | 1.1% | 50K | — | |||
| 35 | $NET | Cloudflare, Inc. | Technology | $994K | 1.1% | 4,046 | New | |||
| 36 | $COHR | COHERENT CORP. | Technology | $947K | 1.0% | 2,400 | New | |||
| 37 | $GLD | SPDR GOLD TRUST | Financials | $943K | 1.0% | 2,560 | — | |||
| 38 | $TWLO | TWILIO INC | Technology | $939K | 1.0% | 15K | New | |||
| 39 | $NET | Cloudflare, Inc. | Technology | $898K | 1.0% | 14K | New | |||
| 40 | $SNOW | Snowflake Inc. | Technology | $828K | 0.9% | 10K | New | |||
| 41 | $SHOP | SHOPIFY INC. | Technology | $821K | 0.9% | 7,190 | — | |||
| 42 | $OLED | UNIVERSAL DISPLAY CORP \PA\ | Technology | $798K | 0.9% | 9,217 | — | |||
| 43 | $ABNB | Airbnb, Inc. | Technology | $716K | 0.8% | 5,000 | -70% | |||
| 44 | $SBAC | SBA COMMUNICATIONS CORP | Real Estate | $706K | 0.8% | 4,000 | New | |||
| 45 | $GWRE | Guidewire Software, Inc. | Technology | $541K | 0.6% | 4,400 | New | |||
| 46 | $APP | AppLovin Corp | Technology | $481K | 0.5% | 5,000 | New | |||
| 47 | $ESTC | Elastic N.V. | Technology | $376K | 0.4% | 6,600 | — | |||
| 48 | $RBLX | Roblox Corp | Technology | $364K | 0.4% | 40K | New | |||
| 49 | $S | SentinelOne, Inc. | Technology | $339K | 0.4% | 20K | — | |||
| 50 | $RBLX | Roblox Corp | Technology | $321K | 0.3% | 5,900 | -60% | |||
| 51 | $FIVN | Five9, Inc. | Technology | $178K | 0.2% | 200K | — | |||
| 52 | $ETSY | ETSY INC | Industrials | $171K | 0.2% | 13K | +15% | |||
| 53 | $ZIP | ZIPRECRUITER, INC. | Technology | $146K | 0.2% | 39K | — | |||
| 54 | $GWRE | Guidewire Software, Inc. | Technology | $139K | 0.1% | 20K | New | |||
| 55 | $META | Meta Platforms, Inc. | Technology | $138K | 0.1% | 5,000 | New | |||
| 56 | $ORCL | ORACLE CORP | Technology | $82K | 0.1% | 20K | New | |||
| 57 | $NTNX | Nutanix, Inc. | Technology | $40K | 0.0% | 10K | New |
What changed in Q2 2026
Against the previous quarter's 13F: 16 new, 14 added to, 6 trimmed, 23 sold out. Share-count changes; largest moves by dollar size first.
New positions (16)
first bought this quarter
first bought this quarter
first bought this quarter
first bought this quarter
first bought this quarter
$CIENCIENA CORP$1.5M
first bought this quarter
+10 more in the Excel export
Added to (14)
now $2.4M · held 2 qtrs, 2 adds in a row
now $4.2M · held 3+ qtrs, 2 adds in a row
now $3.1M · held 2 qtrs, 2 adds in a row
now $2.5M · held 3+ qtrs, 2 adds in a row
$KLACKLA CORP+269%
now $1.1M · held 2 qtrs
$ORCLORACLE CORP+91%
now $1.5M · held 3+ qtrs, 2 adds in a row
+8 more in the Excel export
Trimmed (6)
$ABNBAirbnb, Inc.-70%
now $716K · held 3+ qtrs
$TWLOTWILIO INC-55%
now $1.1M · held 3+ qtrs
now $4.4M · held 3+ qtrs
$MRSHMARSH & MCLENNAN COMPANIES, INC.-40%
now $1.3M · held 3+ qtrs
now $1.7M · held 3+ qtrs
+1 more in the Excel export
Holdings by quarter
Every 13F Sunstone Asset Management, L.P. has filed, 2 earlier quarters. Pick one to see what it held then.
Is it too late to follow Sunstone Asset Management, L.P.?
Q2 2026 13F filed with the SEC on Aug 14, 2026. Prices are closing prices as of Oct 26, 2026.
Average quality of Sunstone Asset Management, L.P.'s top 20 holdings: 66/100 (our AI quality score, weighted by position size; 18 of the 20 are scored)
Top 10 since filing
-14.9%
Value-weighted move of the 10 largest stock positions
Turnover
41%
Last quarter
Top 10 weight
44%
Share of the stock portfolio in its 10 largest positions
Held 4+ quarters
0%
Share of portfolio value in positions held a year or more
Highest-quality names it owns(among its 100 largest positions)
The 8 highest-scoring companies in this portfolio are a Pro feature.
How these are measured
- Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
- Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
- Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q4 2025 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
- Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
- Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.
Portfolio Overview
Sunstone Asset Management, L.P. disclosed 57 positions worth $92.4M in its Form 13F-HR for Q2 2026, led by $AMAT (APPLIED MATERIALS INC /DE) at 5.9% of the equity portfolio, followed by $MKSI and $MTSI. During the quarter the fund opened 16 new positions and exited 23 — including a new stake in $MKSI and a full exit from $NVDA. The portfolio is most concentrated in Technology (68.7% of disclosed assets). All figures are sourced directly from Sunstone Asset Management, L.P.’s Form 13F-HR filing with the SEC under CIK 2111996.
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