Sunstone Asset Management, LP

CIK 2111996 · View on SEC EDGAR ↗

Portfolio value QoQ: +8.6% 13F does not disclose cash

Top 10 holdings weight43.84%

Top 25 holdings weight75.90%

Positions above 1%38

Effective number of positions33.7

Based on 13F long-equity holdings only (cash, bonds, shorts not disclosed)

Turnover Q2 2026: 41.9% Est. buys $37,175,286 · sells $37,839,271

New positions23

Increased12

Decreased6

Closed20

Portfolio value $92.4M #8,386 of 9,337 by 13F value · top 89.8%

Positions 57

As of June 30, 2026 Data as of Q2 2026

Sector breakdown

Technology 43.8%

Communication Services 11.1%

Industrials 8.5%

Consumer Discretionary 6.5%

Retail 5.4%

Real Estate 4.4%

Financials 4.1%

Consumer products 1.1%

Other/Unmapped 15.1%

Full portfolio 57 positions

					Streak
AMAT Applied Materials, Inc. - Common Stock	$5,480,340	5.93%	7,580	$2,916,915	Up ×2
MKSI MKS Inc. - Common Stock	$5,159,680	5.59%	11,600		Up ×1
MTSI MACOM Technology Solutions Holdings, Inc. - Common Stock	$4,435,495	4.80%	11,661	$1,268,555	Down ×1
GLW Corning Incorporated Common Stock	$4,353,205	4.71%	17,052	$2,290,404	Up ×1
DASH DoorDash, Inc. - Common Stock	$4,225,737	4.58%	22,900	$1,868,382	Up ×2
Unknown issuer (CUSIP: 090043AF7)	$4,037,191	4.37%	4,660,000	$-118,597
SNPS Synopsys, Inc. - Common Stock	$3,635,471	3.94%	8,150	$689,625	Up ×2
ASML ASML Holding N.V. - New York Registry Shares	$3,382,048	3.66%	1,700		Up ×1
SNOW Snowflake Inc. Common Stock	$3,054,000	3.31%	12,000	$1,968,096	Up ×1
GSAT Globalstar, Inc. - Common Stock	$2,723,215	2.95%	33,500		Up ×1
TDS Telephone and Data Systems, Inc. Common Shares	$2,613,054	2.83%	70,604	$-359,374
APH Amphenol Corporation Common Stock	$2,556,640	2.77%	14,500	$724,565
SE Sea Limited American Depositary Shares, each representing one Class A Ordinary Share	$2,512,088	2.72%	26,214	$1,384,713	Up ×2
V Visa Inc.	$2,504,557	2.71%	7,300	$298,205
AMZN Amazon.com, Inc. - Common Stock	$2,454,902	2.66%	10,300		Up ×1
ADI Analog Devices, Inc. - Common Stock	$2,383,020	2.58%	6,000	$1,619,484	Up ×1
Unknown issuer (CUSIP: 91332UAB7)	$1,968,000	2.13%	2,000,000	$22,000
ANET Arista Networks, Inc. Common Stock	$1,766,752	1.91%	10,400		Up ×1
EQIX Equinix, Inc. - Common Stock	$1,714,732	1.86%	1,645	$-329,068	Down ×1
NTNX Nutanix, Inc. - Class A Common Stock	$1,676,074	1.81%	32,890	$425,925
AMT American Tower Corporation (REIT) Common Stock	$1,621,633	1.76%	9,914	$-89,325
ORCL Oracle Corporation Common Stock	$1,540,035	1.67%	10,500	$730,820	Up ×2
CIEN Ciena Corporation Common Stock	$1,491,302	1.61%	3,040		Up ×1
STX Seagate Technology Holdings PLC - Ordinary Shares (Ireland)	$1,428,200	1.55%	1,480		Up ×1
Unknown issuer (CUSIP: 86800UAB0)	$1,386,750	1.50%	1,500,000	$586,850	Up ×1
Unknown issuer (CUSIP: 60937P906)	$1,379,500	1.49%	20,000		Up ×1
MRSH Marsh Common Stock	$1,322,026	1.43%	7,932	$-955,719	Down ×1
JOYY JOYY Inc. - American Depositary Shares	$1,234,343	1.34%	18,705	$142,158
TER Teradyne, Inc. - Common Stock	$1,122,509	1.22%	2,320		Up ×1
NOW ServiceNow, Inc. Common Stock	$1,114,914	1.21%	11,230	$275,458	Up ×2
KLAC KLA Corporation - Common Stock	$1,068,053	1.16%	3,540	$-345,461	Up ×1
TWLO Twilio Inc. Class A Common Stock	$1,065,901	1.15%	5,166	$-389,333	Down ×1
TCOM Trip.com Group Limited - American Depositary Shares	$1,047,792	1.13%	26,300	$564,829	Up ×1
SONY Sony Group Corporation American Depositary Shares	$995,498	1.08%	49,626	$-31,760
NET Cloudflare, Inc. Class A Common Stock	$993,536	1.08%	4,046		Up ×1
COHR Coherent Corp. Common Stock	$946,728	1.03%	2,400		Up ×1
GLD SPDR Gold Shares	$943,053	1.02%	2,560	$-158,592
Unknown issuer (CUSIP: 90138F902)	$939,000	1.02%	15,000		Up ×1
Unknown issuer (CUSIP: 18915M907)	$898,105	0.97%	13,800		Up ×1
Unknown issuer (CUSIP: 833445909)	$828,250	0.90%	10,000		Up ×1
SHOP Shopify Inc. - Class A Subordinate Voting Shares	$820,954	0.89%	7,190	$-31,924
OLED Universal Display Corporation - Common Stock	$798,100	0.86%	9,217	$-46,730
ABNB Airbnb, Inc. - Class A Common Stock	$715,500	0.77%	5,000	$-1,393,376	Down ×1
SBAC SBA Communications Corporation - Class A Common Stock	$705,840	0.76%	4,000		Up ×1
GWRE Guidewire Software, Inc. Common Stock	$541,420	0.59%	4,400		Up ×1
Unknown issuer (CUSIP: 03831W908)	$480,750	0.52%	5,000		Up ×1
ESTC Elastic N.V. Ordinary Shares	$376,332	0.41%	6,600	$46,530
Unknown issuer (CUSIP: 771049903)	$363,625	0.39%	40,000		Up ×1
S SentinelOne, Inc. Class A Common Stock	$339,400	0.37%	20,000	$81,800
RBLX Roblox Corporation Class A Common Stock	$320,960	0.35%	5,900	$-512,112	Down ×1
Unknown issuer (CUSIP: 338307AF8)	$177,540	0.19%	200,000	$3,040
Unknown issuer (CUSIP: 29786A906)	$170,625	0.18%	12,500		Up ×1
ZIP ZipRecruiter, Inc. Class A Common Stock	$145,538	0.16%	38,810	$74,128
Unknown issuer (CUSIP: 40171V900)	$139,000	0.15%	20,000		Up ×1
Unknown issuer (CUSIP: 30303M902)	$138,250	0.15%	5,000		Up ×1
Unknown issuer (CUSIP: 68389X905)	$82,300	0.09%	20,000		Up ×1
Unknown issuer (CUSIP: 67059N908)	$40,000	0.04%	10,000		Up ×1
No matches

Biggest new bets

New positions opened this quarter, largest first.

Security	Value	Shares	% of portfolio
MKSI	$5,159,680	11,600	5.59%
ASML	$3,382,048	1,700	3.66%
GSAT	$2,723,215	33,500	2.95%
AMZN	$2,454,902	10,300	2.66%
ANET	$1,766,752	10,400	1.91%
CIEN	$1,491,302	3,040	1.61%
STX	$1,428,200	1,480	1.55%
Unknown issuer (CUSIP: 60937P906)	$1,379,500	20,000	1.49%
TER	$1,122,509	2,320	1.22%
NET	$993,536	4,046	1.08%
COHR	$946,728	2,400	1.03%
Unknown issuer (CUSIP: 90138F902)	$939,000	15,000	1.02%
Unknown issuer (CUSIP: 18915M907)	$898,105	13,800	0.97%
Unknown issuer (CUSIP: 833445909)	$828,250	10,000	0.90%
SBAC	$705,840	4,000	0.76%

Top movers (QoQ)

Security	Action	Shares Δ	Value Δ
AMAT	Bought more	+80	+$2.9M
GLW	Bought more	+2K	+$2.3M
SNOW	Bought more	+5K	+$2.0M
DASH	Bought more	+7K	+$1.9M
ADI	Bought more	+4K	+$1.6M
ABNB	Trimmed	-12K	-$1.4M
SE	Bought more	+13K	+$1.4M
MTSI	Trimmed	-3K	+$1.3M
MRSH	Trimmed	-5K	-$956K
ORCL	Bought more	+5K	+$731K

Exited positions

Includes corporate events (mergers, delistings) — not all exits are sells

Closed positions reflect 13F reporting changes; for index managers these are often mechanical (delisting, M&A, index rebalancing), not active decisions.

Security	Quarter	Shares before	Value before	Price since exit
NVDA	June 30, 2026	30,441	$5,310,280	19.4%
MDB	June 30, 2026	15,996	$3,915,341	6.9%
CYBR	March 31, 2026	8,600	$3,836,116	No longer tracked
PANW	June 30, 2026	17,113	$2,743,556	19.3%
AMD	June 30, 2026	11,096	$2,257,259	8.8%
MSFT	June 30, 2026	5,900	$2,184,003	40.8%
FLEX	June 30, 2026	30,274	$1,981,736	-28.0%
MNDY	March 31, 2026	11,641	$1,717,746	19.6%
SNDK	June 30, 2026	2,600	$1,651,884	-25.1%
NFLX	June 30, 2026	16,000	$1,537,920	-5.5%
TXN	March 31, 2026	8,348	$1,448,295	51.9%
GOOG	June 30, 2026	4,647	$1,333,224	-2.7%
NOK	June 30, 2026	164,800	$1,324,992	-23.2%
INTU	June 30, 2026	2,880	$1,245,254	9.1%
TTMI	June 30, 2026	12,100	$1,178,782	-28.8%
CLS	June 30, 2026	3,998	$1,126,157	4.9%
RMBS	June 30, 2026	11,746	$1,010,508	-16.9%
U	June 30, 2026	42,900	$941,226	59.8%
FORM	March 31, 2026	15,409	$858,928	52.6%
AVGO	June 30, 2026	2,721	$842,585	-4.0%
TTD	March 31, 2026	20,000	$759,200	-47.2%
CFLT	March 31, 2026	21,300	$644,112	No longer tracked
ETSY	June 30, 2026	10,900	$544,782	-5.9%
ZS	June 30, 2026	3,760	$527,490	43.0%
DDOG	March 31, 2026	3,206	$435,984	134.2%
BE	March 31, 2026	4,800	$417,072	111.6%
SMCI	March 31, 2026	14,000	$409,780	89.7%
ZM	June 30, 2026	4,200	$337,638	8.5%
KVYO	March 31, 2026	10,335	$335,577	-14.2%
EM	June 30, 2026	48,918	$55,277	No longer tracked