Sunstone Asset Management, L.P.

Registered adviser

CIK

2111996

Location

New York, NY

Portfolio Value

Micro $81,887,080

Diversification

Diversified

Filing Date

Global Rank

#8,394 / 8,811 ▼ 223

Top Industry

Semiconductor Equipment & Materials 13.7%

Period ended 4 months ago

Filed Aug 14, 2026 · 2mo

3 quarters · since Dec 2025

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Registered adviser

Form ADV roster, Oct 1, 2026

Form ADV adviser

CRD 328895

Roster of Oct 1, 2026

Regulatory AUM

$220,211,153

Main clients

Pooled investment vehicles (100% of AUM)

Private funds

1 fund · Hedge funds

Focus by fund count, roster of Oct 1, 2026

$73,988,321 gross assets

Private funds on Schedule D 7.B.(1)

As filed Aug 12, 2024; SEC's bulk Form ADV archive ends with 2024 filings.

$5,801,500 gross assets in 1 fund Hedge funds $5,801,500 (1)

Form ADV history

Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.

Rosters	Regulatory AUM	Main clients
Apr 2026 to Oct 2026	$220,211,153	Pooled investment vehicles (100%)
Aug 2025 to Mar 2026	$181,226,950	Pooled investment vehicles (100%)
Apr 2025 to Jun 2025	—	—
Sep 2024 to Mar 2025	—	—

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style

Diversified active

Top 10 weight 50.8%, 27.3 effective positions, active share 88.8% against the Nasdaq-100 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests

Turnover

Turnover unknown

It needs four straight quarters of measured turnover

Horizon

Short horizon

Value-weighted holding period 2.2 quarters (under 4)

Closest benchmark: the Nasdaq-100 as of 2026-06-30, active share 88.8%; sector active share 46.1% against the combined 13F book's sector weights.

Over time 3 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

View clone backtest

Portfolio Concentration

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

Top Position

6.7%

−0.1 pts

Top 5

30.0%

+5.5 pts

Top 10

50.8%

+9.7 pts

HHI

367

Diversified+75

Portfolio Trend

3 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Technology	67.3%	$55,082,234	26
Consumer Cyclical	13.4%	$10,956,018	5
Communication Services	8.6%	$7,036,990	5
Real Estate	4.9%	$4,042,203	3
Financial Services	4.7%	$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	+1,881	17,052	$4,355,592
SNPS	Synopsys Inc	+720	8,150	$3,635,470
AMAT	Applied Materials Inc	+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
GOOG	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 · $81,887,080 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	Held (qtrs)	Est. cost/share	% of Portfolio
AMAT	Applied Materials Inc Technology	Added	7,580	+80	$5,480,340	+113.8%	3	before history	6.69%
MKSI	Mks Inc Technology	NEW	11,600	NEW	$5,159,680	NEW	1	$312.92	6.30%
APH	Amphenol Corp Technology	Held	14,500	0	$5,113,280	+39.5%	2	unpriced	6.24%
MTSI	MACOM Technology Solutions Holdings, Inc. Technology	Reduced	11,661	-2,600	$4,435,494	+40.1%	3	before history	5.42%
GLW	Corning Inc Technology	Added	17,052	+1,881	$4,355,592	+111.1%	2	$127.36	5.32%
DASH	DoorDash, Inc. Consumer Cyclical	Added	22,900	+7,200	$4,225,737	+79.3%	3	before history	5.16%
SNPS	Synopsys Inc Technology	Added	8,150	+720	$3,635,470	+23.4%	3	before history	4.44%
ASML	Asml Holding NV Technology	NEW	1,700	NEW	$3,382,047	NEW	1	$1,591.72	4.13%
SNOW	Snowflake Inc. Technology	Added	12,000	+4,800	$3,054,000	+181.2%	2	$184.65	3.73%
GSAT	Globalstar, Inc. Communication Services	NEW	33,500	NEW	$2,723,215	NEW	1	$80.48	3.33%
TDS	Telephone & Data Systems Inc Communication Services	Held	70,604	0	$2,613,054	−12.1%	3	before history	3.19%
SE	Sea Ltd Consumer Cyclical	Added	26,214	+12,600	$2,512,087	+122.8%	3	before history	3.07%
V	Visa Inc. Financial Services	Held	7,300	0	$2,504,557	+13.5%	3	before history	3.06%
AMZN	Amazon Com Inc Consumer Cyclical	NEW	10,300	NEW	$2,454,902	NEW	1	$251.01	3.00%
ADI	Analog Devices Inc Technology	Added	6,000	+3,600	$2,383,020	+212.1%	2	$364.76	2.91%
ANET	Arista Networks, Inc. Technology	NEW	10,400	NEW	$1,766,752	NEW	1	$157.08	2.16%
EQIX	Equinix Inc Real Estate	Reduced	1,645	-440	$1,714,731	−16.1%	3	before history	2.09%
NTNX	Nutanix, Inc. Technology	Held	32,890	0	$1,676,074	+34.1%	3	before history	2.05%
AMT	American Tower Corp Real Estate	Held	9,914	0	$1,621,632	−5.2%	3	before history	1.98%
ORCL	Oracle Corp Technology	Added	10,500	+5,000	$1,538,775	+90.2%	3	before history	1.88%
CIEN	Ciena Corp Technology	NEW	3,040	NEW	$1,491,302	NEW	1	$509.94	1.82%
STX	Seagate Technology Holdings plc Technology	NEW	1,480	NEW	$1,428,200	NEW	1	$762.82	1.74%
MRSH	Marsh & Mclennan Companies, Inc. Financial Services	Reduced	7,932	-5,200	$1,322,026	−42.0%	3	before history	1.61%
JOYY	JOYY Inc. Communication Services	Held	18,705	0	$1,234,342	+13.0%	3	before history	1.51%
TER	Teradyne, Inc Technology	NEW	2,320	NEW	$1,122,508	NEW	1	$377.22	1.37%
NOW	ServiceNow, Inc. Technology	Added	11,230	+3,200	$1,114,914	+32.8%	3	before history	1.36%
KLAC	Kla Corp Technology	Added	3,540	+2,580	$1,068,053	−24.4%	2	$146.30	1.30%
TWLO	Twilio Inc Technology	Reduced	5,166	-6,400	$1,065,900	−26.8%	3	before history	1.30%
TCOM	Trip.com Group Ltd Consumer Cyclical	Added	26,300	+16,600	$1,047,792	+117.0%	2	$52.80	1.28%
SONY	Sony Group Corp Technology	Held	49,626	0	$995,497	−3.1%	3	before history	1.22%
NET	Cloudflare, Inc. Technology	NEW	4,046	NEW	$992,402	NEW	1	$218.77	1.21%
COHR	Coherent Corp. Technology	NEW	2,400	NEW	$946,728	NEW	1	$353.72	1.16%
GLD	Spdr Gold Trust	Held	2,560	0	$943,052	−14.4%	3	before history	1.15%
SHOP	Shopify Inc. Technology	Held	7,190	0	$820,954	−3.7%	3	before history	1.00%
OLED	Universal Display Corp \Pa\ Technology	Held	9,217	0	$798,100	−5.5%	3	before history	0.97%
ABNB	Airbnb, Inc. Consumer Cyclical	Reduced	5,000	-11,700	$715,500	−66.1%	3	before history	0.87%
SBAC	Sba Communications Corp Real Estate	NEW	4,000	NEW	$705,840	NEW	1	$206.19	0.86%
GWRE	Guidewire Software, Inc. Technology	NEW	4,400	NEW	$541,420	NEW	1	$133.33	0.66%
ESTC	Elastic N.V. Technology	Held	6,600	0	$376,332	+14.1%	2	$61.45	0.46%
S	SentinelOne, Inc. Technology	Held	20,000	0	$339,400	+31.8%	2	$13.89	0.41%
RBLX	Roblox Corp Communication Services	Reduced	5,900	-8,829	$320,842	−61.5%	2	$67.16	0.39%
ZIP	Ziprecruiter, Inc. Communication Services	Held	38,810	0	$145,537	+103.8%	3	before history	0.18%

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.