Q2 2026 13F · SEC CIK 1638555

Summit Partners Public Asset Management, LLC

Hedge fundFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $3.8B
Reported positions: 79
Top holdings a year, 3 yrs: +43.9%
Assets under management: $4.6B

Summit Partners Public Asset Management, LLC is a hedge fund that reported 79 positions worth $3.8B in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Sandisk Corp (SNDK, 9.2%), Guardant Health Inc (GH, 3.8%), Mks Inc. (MKSI, 3.7%). A portfolio copying its top holdings returned 43.9% a year over the last 3 years, against 20.4% for the S&P 500.

Summit Partners Public Asset Management, LLC holdings largest 50 of 79 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Summit Partners Public Asset Management, LLC 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
SNDKSandisk Corp	9.2%	5.5%	155,402	-16.2%	$353.3M
GHGuardant Health Inc	3.8%	3.7%	967,697	+12.1%	$145.2M
MKSIMks Inc.	3.7%	3.0%	319,833	+13.3%	$142.3M
DOCNDigitalocean Hldgs Inc	3.6%	3.7%	887,435	-5.3%	$139.4M
SOISolaris Energy Infras Inc	3.5%	4.5%	1,692,838	-2.1%	$136.2M
TSEMTower Semiconductor Ltd	3.5%	5.6%	517,547	-25.2%	$134.9M
NBISNebius Group N.v. Shs Class A	3.2%	1.3%	449,416	+60.5%	$124.1M
SNOWSnowflake Inc	2.9%	—	440,409	—	$112.1M
HUTHut 8 Corp	2.9%	—	958,500	—	$110.7M
NTRANatera Inc Com	2.7%	3.4%	389,000	+4.7%	$105.6M
DDOGDatadog Inc	2.7%	—	396,975	—	$103.4M
NVDANvidia Corporation Com	2.3%	3.6%	449,977	+0.1%	$90.0M
ONTOOnto Innovation Inc	2.3%	—	232,000	—	$87.8M
SIMOSilicon Motion Technology Corp Sponsored	2.3%	2.4%	261,815	-42.6%	$87.3M
SITMSitime Corp	2.0%	1.7%	102,958	-2.0%	$76.8M
ARWRArrowhead Pharmaceuticals in	1.8%	1.6%	830,247	+53.7%	$67.7M
COMPCompass Inc	1.7%	1.9%	5,405,000	-5.2%	$66.6M
ORKAOruka Therapeutics Inc	1.6%	—	658,301	—	$62.7M
IONSIonis Pharmaceuticals Inc	1.6%	4.9%	787,263	-43.9%	$62.4M
GKOSGlaukos Corp	1.6%	—	446,550	—	$62.4M
TSMTaiwan Semiconductor Manufac	1.5%	2.0%	123,250	-1.5%	$58.9M
ABVXAbivax SA	1.4%	—	410,000	—	$54.6M
SNSharkninja Inc Com Shs	1.4%	—	357,266	—	$54.4M
VRTVertiv Holdings Co	1.4%	1.9%	160,915	+0.0%	$53.9M
CRDOCredo Technology Group Holdi	1.4%	—	197,251	—	$53.6M
TWLOTwilio Inc Cl A	1.4%	—	257,911	—	$53.2M
RSIRush Street Interactive Inc	1.3%	—	1,714,499	—	$51.0M
ALKSAlkermes PLC	1.3%	—	950,234	—	$49.8M
HTFLHeartflow Inc	1.3%	1.0%	1,694,651	+90.0%	$49.7M
LRCXLam Research Corp	1.3%	1.1%	114,000	+3.6%	$49.4M
FLEXFlex Ltd	1.3%	—	304,618	—	$49.4M
BBIOBridgebio Pharma Inc	1.2%	1.2%	621,125	+76.0%	$46.3M
FPSForgent Power Solutions Inc	1.2%	0.9%	825,726	+17.8%	$46.1M
XMTRXometry Inc	1.2%	1.3%	469,000	-33.9%	$45.3M
ESTAEstablishment Labs Holdings Inc	1.1%	1.0%	491,486	+25.1%	$42.2M
FIXComfort Sys USA Inc	1.1%	0.6%	21,000	+110.0%	$41.6M
AMATApplied Matls Inc	1.0%	—	55,000	—	$39.8M
CRWDCrowdstrike Hldgs Inc Class A	1.0%	—	50,000	—	$38.2M
SPOTSpotify Technology S A	1.0%	2.0%	83,000	-7.8%	$38.1M
SKYChampion Homes Inc	0.9%	1.3%	400,000	+7.9%	$35.2M
TLNTalen Energy Corp	0.9%	—	90,000	—	$34.6M
CVNACarvana Co	0.9%	1.9%	525,000	+305.3%	$34.6M
ADIAnalog Devices Inc	0.9%	1.5%	87,000	-16.3%	$34.6M
MECMayville Engr Co Inc	0.8%	—	800,000	—	$30.0M
IRMIron Mountain Inc	0.8%	—	235,567	—	$29.8M
CBRSCerebras Systems Inc	0.8%	—	134,465	—	$29.7M
LSCCLattice Semiconductor Corp	0.7%	2.3%	188,000	-64.6%	$28.8M
EQIXEquinix Inc	0.7%	—	26,130	—	$27.2M
CEGConstellation Energy Corp	0.6%	1.0%	100,000	+25.0%	$24.8M
WULFTerawulf Inc	0.6%	—	990,640	—	$24.5M

What Summit Partners Public Asset Management, LLC bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Added to

CVNA Carvana Co+305.3% shares
FIX Comfort Sys USA Inc+110.0% shares
HTFL Heartflow Inc+90.0% shares
BBIO Bridgebio Pharma Inc+76.0% shares
NBIS Nebius Group N.v. Shs Class A+60.5% shares
ARWR Arrowhead Pharmaceuticals in+53.7% shares
ESTA Establishment Labs Holdings Inc+25.1% shares
CEG Constellation Energy Corp+25.0% shares

Reduced

LSCC Lattice Semiconductor Corp-64.6% shares
IONS Ionis Pharmaceuticals Inc-43.9% shares
SIMO Silicon Motion Technology Corp Sponsored-42.6% shares
XMTR Xometry Inc-33.9% shares
TSEM Tower Semiconductor Ltd-25.2% shares
ADI Analog Devices Inc-16.3% shares
SNDK Sandisk Corp-16.2% shares
SPOT Spotify Technology S A-7.8% shares

Left the top 50

Share counts compared with the Q1 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +44.1% /yr; S&P 500 +20.1%
3 years: +43.9% /yr; S&P 500 +20.4%
5 years: +14.1% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value and rebuilt each quarter on the day the filing became public. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$3.8B	79
Q1 2026	$2.2B	66
Q4 2025	$3.6B	69
Q3 2025	$3.1B	72
Q2 2025	$2.6B	71
Q1 2025	$2.1B	60
Q4 2024	$3.0B	67
Q3 2024	$2.2B	64
Q2 2024	$2.2B	70
Q1 2024	$2.1B	68
Q4 2023	$1.8B	75
Q3 2023	$1.6B	58

Questions about Summit Partners Public Asset Management, LLC's portfolio

What stocks does Summit Partners Public Asset Management, LLC own?

Summit Partners Public Asset Management, LLC's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 79 positions worth $3.8B. The largest are Sandisk Corp (SNDK) at 9.2%, Guardant Health Inc (GH) at 3.8%, Mks Inc. (MKSI) at 3.7%, Digitalocean Hldgs Inc (DOCN) at 3.6% and Solaris Energy Infras Inc (SOI) at 3.5%.

What did Summit Partners Public Asset Management, LLC buy last quarter?

In Q2 2026, Summit Partners Public Asset Management, LLC added Carvana Co (CVNA) (+305.3% shares), Comfort Sys USA Inc (FIX) (+110.0% shares) and Heartflow Inc (HTFL) (+90.0% shares), compared with its Q1 2026 filing.

What did Summit Partners Public Asset Management, LLC sell last quarter?

In Q2 2026, Summit Partners Public Asset Management, LLC cut from its top 50 Insmed Inc (INSM), cut from its top 50 Akamai Technologies Inc (AKAM), cut from its top 50 Advanced Energy Inds (AEIS), cut from its top 50 Samsara, Inc. (IOT), cut from its top 50 Eaton Corp PLC (ETN), Lattice Semiconductor Corp (LSCC) (-64.6% shares), Ionis Pharmaceuticals Inc (IONS) (-43.9% shares) and Silicon Motion Technology Corp Sponsored (SIMO) (-42.6% shares), compared with its Q1 2026 filing.

How has Summit Partners Public Asset Management, LLC's portfolio performed?

A portfolio copying Summit Partners Public Asset Management, LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +43.9% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +44.1% against +20.1%. Over 5 years: +14.1% a year against +11.6%.

When is Summit Partners Public Asset Management, LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Summit Partners Public Asset Management, LLC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.

How much money does Summit Partners Public Asset Management, LLC manage?

Summit Partners Public Asset Management, LLC reported $4.6B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $3.8B.