Sunstone Asset Management, L.P.

CIK

2111996

Location

New York, NY

Portfolio Value

Micro $76,773,800

Diversification

Diversified

Filing Date

Global Rank

#6,548 / 8,633 ▲ 125

Top Industry

Semiconductor Equipment & Materials 14.6%

3Y Alpha vs SPY

+109.9%

Period ended 51 days ago

Filed Aug 14, 2026 · 6d

3 quarters · since Dec 2025

Clone Performance

Feb 2026–Aug 2026 · vs SPY

Hypothetical growth of buying every stock this filer reported holding, rebalancing on each filing and indexed to the same start. Option positions cannot be bought this way and are left out.

Cloned portfolio

+47.5%

SPY

+12.8%

Annualised alpha

+87.0%

Max drawdown

−18.1%

Estimate. 13F holdings are quarter-lagged, so the clone rebalances about 45 days after each period end — when the filing becomes public — and it excludes option and short positions. Returns use comparable raw closes and exclude dividends; a captured split can shorten the simulated window. It tracks 100% of reported value on average across 3 quarters. Past performance does not predict future results.

Portfolio Concentration

42 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

7.1%

−0.0 pts

Top 5

30.8%

+6.1 pts

Top 10

50.9%

+9.7 pts

HHI

373

Diversified+76

Portfolio Trend

3 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Technology	65.1%	$49,968,954	26
Consumer Cyclical	14.3%	$10,956,018	5
Communication Services	9.2%	$7,036,990	5
Real Estate	5.3%	$4,042,203	3
Financial Services	5.0%	$3,826,583	2
Unclassified	1.2%	$943,052	1

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

11 positions

Ticker	Company	Δ Shares	Shares	Value
TCOM	Trip.com Group Ltd	+16,600	26,300	$1,047,792
SE	Sea Ltd	+12,600	26,214	$2,512,087
DASH	DoorDash, Inc.	+7,200	22,900	$4,225,737
ORCL	Oracle Corp	+5,000	10,500	$1,538,775
SNOW	Snowflake Inc.	+4,800	12,000	$3,054,000
ADI	Analog Devices Inc	+3,600	6,000	$2,383,020
NOW	ServiceNow, Inc.	+3,200	11,230	$1,114,914
KLAC	Kla Corp	+2,580	3,540	$1,068,053
GLW	Corning Inc /Ny	+1,881	17,052	$4,355,592
SNPS	Synopsys Inc	+720	8,150	$3,635,470
AMAT	Applied Materials Inc /De	+80	7,580	$5,480,340
No positions match the current search.

Trimmed

Positions the filer reduced

6 positions

Ticker	Company	Δ Shares	Shares	Value
ABNB	Airbnb, Inc.	−11,700	5,000	$715,500
RBLX	Roblox Corp	−8,829	5,900	$320,842
TWLO	Twilio Inc	−6,400	5,166	$1,065,900
MRSH	Marsh & Mclennan Companies, Inc.	−5,200	7,932	$1,322,026
MTSI	MACOM Technology Solutions Holdings, Inc.	−2,600	11,661	$4,435,494
EQIX	Equinix Inc	−440	1,645	$1,714,731
No positions match the current search.

New Positions

Positions the filer opened this quarter

12 positions

Ticker	Company	Shares	Value
MKSI	Mks Inc	11,600	$5,159,680
ASML	Asml Holding NV	1,700	$3,382,047
GSAT	Globalstar, Inc.	33,500	$2,723,215
AMZN	Amazon Com Inc	10,300	$2,454,902
ANET	Arista Networks, Inc.	10,400	$1,766,752
CIEN	Ciena Corp	3,040	$1,491,302
STX	Seagate Technology Holdings plc	1,480	$1,428,200
TER	Teradyne, Inc	2,320	$1,122,508
NET	Cloudflare, Inc.	4,046	$992,402
COHR	Coherent Corp.	2,400	$946,728
SBAC	Sba Communications Corp	4,000	$705,840
GWRE	Guidewire Software, Inc.	4,400	$541,420
No positions match the current search.

Sold Out

Positions the filer fully exited

20 positions

Ticker	Company	Shares	Value
NVDA	Nvidia Corp	30,441	$5,308,910
MDB	MongoDB, Inc.	15,996	$3,915,340
PANW	Palo Alto Networks Inc	17,113	$2,743,556
AMD	Advanced Micro Devices Inc	11,096	$2,257,259
MSFT	Microsoft Corp	5,900	$2,184,003
FLEX	Flex Ltd.	30,274	$1,981,736
SNDK	Sandisk Corp	2,600	$1,651,884
NFLX	Netflix Inc	16,000	$1,538,400
GOOGL	Alphabet Inc.	4,647	$1,333,038
NOK	Nokia Corp	164,800	$1,324,992
INTU	Intuit Inc.	2,880	$1,245,254
TTMI	Ttm Technologies Inc	12,100	$1,178,782
CLS	Celestica Inc	3,998	$1,126,156
RMBS	Rambus Inc	11,746	$1,010,508
U	Unity Software Inc.	42,900	$941,226
AVGO	Broadcom Inc.	2,721	$842,176
ETSY	Etsy Inc	10,900	$544,782
ZS	Zscaler, Inc.	3,760	$527,490
ZM	Zoom Communications, Inc.	4,200	$337,638
EM	Smart Share Global Ltd	48,918	$0
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

42 tracked positions · $76,773,800 total · filing declares 63 positions · $92,359,463 · as of Jun 30, 2026

All sectors Communication Services Consumer Cyclical Financial Services Real Estate Technology

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
AMAT	Applied Materials Inc /De Technology	Added	7,580	+80	$5,480,340	+113.8%	7.14%
MKSI	Mks Inc Technology	NEW	11,600	NEW	$5,159,680	NEW	6.72%
MTSI	MACOM Technology Solutions Holdings, Inc. Technology	Reduced	11,661	-2,600	$4,435,494	+40.1%	5.78%
GLW	Corning Inc /Ny Technology	Added	17,052	+1,881	$4,355,592	+111.1%	5.67%
DASH	DoorDash, Inc. Consumer Cyclical	Added	22,900	+7,200	$4,225,737	+79.3%	5.50%
SNPS	Synopsys Inc Technology	Added	8,150	+720	$3,635,470	+23.4%	4.74%
ASML	Asml Holding NV Technology	NEW	1,700	NEW	$3,382,047	NEW	4.41%
SNOW	Snowflake Inc. Technology	Added	12,000	+4,800	$3,054,000	+181.2%	3.98%
GSAT	Globalstar, Inc. Communication Services	NEW	33,500	NEW	$2,723,215	NEW	3.55%
TDS	Telephone & Data Systems Inc /De/ Communication Services	Held	70,604	0	$2,613,054	−12.1%	3.40%
SE	Sea Ltd Consumer Cyclical	Added	26,214	+12,600	$2,512,087	+122.8%	3.27%
V	Visa Inc. Financial Services	Held	7,300	0	$2,504,557	+13.5%	3.26%
AMZN	Amazon Com Inc Consumer Cyclical	NEW	10,300	NEW	$2,454,902	NEW	3.20%
ADI	Analog Devices Inc Technology	Added	6,000	+3,600	$2,383,020	+212.1%	3.10%
ANET	Arista Networks, Inc. Technology	NEW	10,400	NEW	$1,766,752	NEW	2.30%
EQIX	Equinix Inc Real Estate	Reduced	1,645	-440	$1,714,731	−16.1%	2.23%
NTNX	Nutanix, Inc. Technology	Held	32,890	0	$1,676,074	+34.1%	2.18%
AMT	American Tower Corp /Ma/ Real Estate	Held	9,914	0	$1,621,632	−5.2%	2.11%
ORCL	Oracle Corp Technology	Added	10,500	+5,000	$1,538,775	+90.2%	2.00%
CIEN	Ciena Corp Technology	NEW	3,040	NEW	$1,491,302	NEW	1.94%
STX	Seagate Technology Holdings plc Technology	NEW	1,480	NEW	$1,428,200	NEW	1.86%
MRSH	Marsh & Mclennan Companies, Inc. Financial Services	Reduced	7,932	-5,200	$1,322,026	−42.0%	1.72%
JOYY	JOYY Inc. Communication Services	Held	18,705	0	$1,234,342	+13.0%	1.61%
TER	Teradyne, Inc Technology	NEW	2,320	NEW	$1,122,508	NEW	1.46%
NOW	ServiceNow, Inc. Technology	Added	11,230	+3,200	$1,114,914	+32.8%	1.45%
KLAC	Kla Corp Technology	Added	3,540	+2,580	$1,068,053	−24.4%	1.39%
TWLO	Twilio Inc Technology	Reduced	5,166	-6,400	$1,065,900	−26.8%	1.39%
TCOM	Trip.com Group Ltd Consumer Cyclical	Added	26,300	+16,600	$1,047,792	+117.0%	1.36%
SONY	Sony Group Corp Technology	Held	49,626	0	$995,497	−3.1%	1.30%
NET	Cloudflare, Inc. Technology	NEW	4,046	NEW	$992,402	NEW	1.29%
COHR	Coherent Corp. Technology	NEW	2,400	NEW	$946,728	NEW	1.23%
GLD	Spdr Gold Trust	Held	2,560	0	$943,052	−14.4%	1.23%
SHOP	Shopify Inc. Technology	Held	7,190	0	$820,954	−3.7%	1.07%
OLED	Universal Display Corp Pa Technology	Held	9,217	0	$798,100	−5.5%	1.04%
ABNB	Airbnb, Inc. Consumer Cyclical	Reduced	5,000	-11,700	$715,500	−66.1%	0.93%
SBAC	Sba Communications Corp Real Estate	NEW	4,000	NEW	$705,840	NEW	0.92%
GWRE	Guidewire Software, Inc. Technology	NEW	4,400	NEW	$541,420	NEW	0.71%
ESTC	Elastic N.V. Technology	Held	6,600	0	$376,332	+14.1%	0.49%
S	SentinelOne, Inc. Technology	Held	20,000	0	$339,400	+31.8%	0.44%
RBLX	Roblox Corp Communication Services	Reduced	5,900	-8,829	$320,842	−61.5%	0.42%
ZIP	Ziprecruiter, Inc. Communication Services	Held	38,810	0	$145,537	+103.8%	0.19%
APH	Amphenol Corp /De/ Technology	Held	14,500	0	$0	—	0.00%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.