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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.

This manager's most recent filing is 3934 quarter(s) behind the newest quarter on file. Treat these figures as history, not current positioning.
$92.4mreported US equity book
57positions
5.9%largest position
43.8%top 10 weight
33.71effective positions (1/HHI)
2quarters on file since Q1 2026

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.

#StockSectorWeightValueSharesΔ sharesAction
1 AMAT APPLIED MATLS INC Technology 5.9%$5.5m7,580 1% added
2 MKSI MKS INSTRUMENTS INC Technology 5.6%$5.2m11,600 new
3 MTSI MACOM TECH SOLUTIONS HLDGS I Technology 4.8%$4.4m11,661 -18% reduced
4 GLW CORNING INC Technology 4.7%$4.4m17,052 12% added
5 DASH DOORDASH INC Consumer Cyclical 4.6%$4.2m22,900 46% added
6 BILL BILL HOLDINGS INC Technology 4.4%$4.0m4,660,000 0% held
7 SNPS SYNOPSYS INC Technology 3.9%$3.6m8,150 10% added
8 ASML ASML HOLDING N V Technology 3.7%$3.4m1,700 new
9 SNOW SNOWFLAKE INC Technology 3.3%$3.1m12,000 67% added
10 GSAT GLOBALSTAR INC Communication Services 2.9%$2.7m33,500 new
11 TDS TELEPHONE & DATA SYS INC Communication Services 2.8%$2.6m70,604 0% held
12 APH AMPHENOL CORP Technology 2.8%$2.6m14,500 0% held
13 SE SEA LTD Consumer Cyclical 2.7%$2.5m26,214 93% added
14 V VISA INC Financial Services 2.7%$2.5m7,300 0% held
15 AMZN AMAZON COM INC Consumer Cyclical 2.7%$2.5m10,300 new
16 ADI ANALOG DEVICES INC Technology 2.6%$2.4m6,000 150% added
17 U UNITY SOFTWARE INC Technology 2.1%$2.0m2,000,000 0% held
18 ANET ARISTA NETWORKS INC Technology 1.9%$1.8m10,400 new
19 EQIX EQUINIX INC Real Estate 1.9%$1.7m1,645 -21% reduced
20 NTNX NUTANIX INC Technology 1.8%$1.7m32,890 0% held
21 AMT AMERICAN TOWER CORP Real Estate 1.8%$1.6m9,914 0% held
22 ORCL ORACLE CORP Technology 1.7%$1.5m10,500 91% added
23 CIEN CIENA CORP Technology 1.6%$1.5m3,040 new
24 STX SEAGATE TECHNOLOGY HLDNGS PL Technology 1.5%$1.4m1,480 new
25 SUPER MICRO COMPUTER INC 1.5%$1.4m1,500,000 50% added
26 MONGODB INC 1.5%$1.4m20,000 new
27 MRSH MARSH & MCLENNAN COS INC Financial Services 1.4%$1.3m7,932 -40% reduced
28 JOYY JOYY INC Communication Services 1.3%$1.2m18,705 0% held
29 TER TERADYNE INC Technology 1.2%$1.1m2,320 new
30 NOW SERVICENOW INC Technology 1.2%$1.1m11,230 40% added
31 KLAC KLA CORP Technology 1.2%$1.1m3,540 269% added
32 TWLO TWILIO INC Technology 1.2%$1.1m5,166 -55% reduced
33 TCOM TRIP COM GROUP LTD Consumer Cyclical 1.1%$1.0m26,300 171% added
34 SONY SONY GROUP CORP Technology 1.1%$995.5k49,626 0% held
35 NET CLOUDFLARE INC Technology 1.1%$993.5k4,046 new
36 COHR COHERENT CORP Technology 1.0%$946.7k2,400 new
37 GLD SPDR GOLD TR 1.0%$943.1k2,560 0% held
38 TWILIO INC 1.0%$939.0k15,000 new
39 CLOUDFLARE INC 1.0%$898.1k13,800 new
40 SNOWFLAKE INC 0.9%$828.2k10,000 new
41 SHOP SHOPIFY INC Technology 0.9%$821.0k7,190 0% held
42 OLED UNIVERSAL DISPLAY CORP Technology 0.9%$798.1k9,217 0% held
43 ABNB AIRBNB INC Consumer Cyclical 0.8%$715.5k5,000 -70% reduced
44 SBAC SBA COMMUNICATIONS CORP Real Estate 0.8%$705.8k4,000 new
45 GWRE GUIDEWIRE SOFTWARE INC Technology 0.6%$541.4k4,400 new
46 APPLOVIN CORP 0.5%$480.8k5,000 new
47 ESTC ELASTIC N V Technology 0.4%$376.3k6,600 0% held
48 ROBLOX CORP 0.4%$363.6k40,000 new
49 S SENTINELONE INC Technology 0.4%$339.4k20,000 0% held
50 RBLX ROBLOX CORP Communication Services 0.3%$321.0k5,900 -60% reduced

What did Sunstone Asset Management, LP sell? Positions exited since the previous filing

StockPrior weightPrior value
NVDA NVIDIA CORPORATION15.7%$5.3m
MDB MONGODB INC11.5%$3.9m
PANW PALO ALTO NETWORKS INC8.1%$2.7m
AMD ADVANCED MICRO DEVICES INC6.7%$2.3m
MSFT MICROSOFT CORP6.4%$2.2m
FLEX FLEXTRONICS INTL LTD5.8%$2.0m
SNDK SANDISK CORP4.9%$1.7m
NFLX NETFLIX INC.4.5%$1.5m
GOOG ALPHABET INC3.9%$1.3m
NOK NOKIA CORP3.9%$1.3m
INTU INTUIT3.7%$1.2m
TTMI TTM TECHNOLOGIES INC3.5%$1.2m
CLS CELESTICA INC3.3%$1.1m
RMBS RAMBUS INC DEL3.0%$1.0m
ETSY ETSY INC2.9%$977.8k
U UNITY SOFTWARE INC2.8%$941.2k
SUPER MICRO COMPUTER INC2.6%$871.6k
AVGO BROADCOM INC2.5%$842.6k
ETSY ETSY INC1.6%$544.8k
ZS ZSCALER INC1.6%$527.5k
ZM ZOOM COMMUNICATIONS INC1.0%$337.6k
EM SMART SH GLOBAL LTD0.2%$55.3k

Sector mix

SectorWeight
Technology63.4%
Consumer Cyclical11.9%
Communication Services7.6%
Real Estate4.4%
Financial Services4.1%

Sectors cover positions whose ticker resolved to a sector; the remainder is unclassified, not cash.

Filing history

QuarterPositionsEquity value
Q2 202663$92.4m
Q1 202656$84.9m

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.