Summit Partners L P

Investment Portfolio & 13F Holdings Analysis

About

Type: FundHoldings: 9Value: $1.6BLatest: 2025Q1

SUMMIT PARTNERS L P is an institutional investment manager that filed its latest Form 13F for 2025Q1, reporting 9 holdings worth $1.6 billion. Form 13F filings provide transparency into the equity holdings of institutional investment managers with over $100 million in assets under management. This page displays the most recent portfolio holdings, allowing investors to track position changes, new investments, and portfolio composition.

AI_NATIVE detailed information: This accession holds the following tickers:[
  "MTSI",
  "ATEN",
  null,
  "LFST",
  "DTC",
  "EGHT",
  "AKA",
  "JAMF",
  "KVYO"
]

Filing Details

13F-HR • 2025-03-31

SEC FilingSEC DataHachi Filing

Report Date: 2025-03-31
Filing Date: 2025-05-05
Total Holdings: 9
Total Value: 1612454329
Accession Number: 0002053510-25-000002
Form Type: 13F-HR
CIK: summit-partners-l-p
Manager Name: Summit-Partners-L-P

Data Enrichment

89% identified

8 identified1 unidentified

Holdings

SEC FilingSEC DataHachi Filing

Manager:

9 positions • $1.6B total value

SEC FilingSEC DataHachi Filing

Manager:

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Klaviyo, Inc.

KVYO|49845K101

Shares:38.8M

Value:$1.2B

% of Portfolio:72.9% ($1.2B/$1.6B)

LifeStance Health Group, Inc.

LFST|53228F101

Shares:41.9M

Value:$279.3M

% of Portfolio:17.3% ($279.3M/$1.6B)

A.K.A. BRANDS HOLDING CORP.

AKA|00152K200

Shares:6.1M

Value:$81.6M

% of Portfolio:5.1% ($81.6M/$1.6B)

Jamf Holding Corp.

JAMF|47074L105

Shares:4.5M

Value:$54.4M

% of Portfolio:3.4% ($54.4M/$1.6B)

83425V104

DTC|83425V104

Shares:44.0M

Value:$7.4M

% of Portfolio:0.5% ($7.4M/$1.6B)

57064N201

Shares:1.5M

Value:$6.9M

% of Portfolio:0.4% ($6.9M/$1.6B)

MACOM Technology Solutions Holdings, Inc.

MTSI|55405Y100

Shares:47.6K

Value:$4.8M

% of Portfolio:0.3% ($4.8M/$1.6B)

A10 Networks, Inc.

ATEN|002121101

Shares:187.4K

Value:$3.1M

% of Portfolio:0.2% ($3.1M/$1.6B)

8X8 INC /DE/

EGHT|282914100

Shares:69.8K

Value:$139.7K

% of Portfolio:0.0% ($139.7K/$1.6B)

Instrument	Shares		Other Manager	Value	% of Portfolio
Klaviyo, Inc.(KVYOcusip49845K101)	38.8M	QoQ -4.89% (-2.0M) YoY -18.67% (-8.9M)	All Managers (Combined)	$1.2B	72.9% ($1.2B/$1.6B)	QoQ -30.21% (-$508.8M) YoY -3.41% (-$41.5M)
LifeStance Health Group, Inc.(LFSTcusip53228F101)	41.9M	QoQ 0.00% (-0) YoY -8.31% (-3.8M)	All Managers (Combined)	$279.3M	17.3% ($279.3M/$1.6B)	QoQ -9.63% (-$29.8M) YoY -1.03% (-$2.9M)
A.K.A. BRANDS HOLDING CORP.(AKAcusip00152K200)	6.1M	QoQ 0.00% (-0) YoY 0.00% (+0)	All Managers (Combined)	$81.6M	5.1% ($81.6M/$1.6B)	QoQ -27.99% (-$31.7M) YoY +42.07% (+$24.2M)
Jamf Holding Corp.(JAMFcusip47074L105)	4.5M	QoQ 0.00% (-0) YoY 0.00% (-0)	All Managers (Combined)	$54.4M	3.4% ($54.4M/$1.6B)	QoQ -13.52% (-$8.5M) YoY -33.78% (-$27.7M)
(DTCcusip83425V104)	44.0M	QoQ 0.00% (-0) YoY 0.00% (-0)	All Managers (Combined)	$7.4M	0.5% ($7.4M/$1.6B)	QoQ -85.26% (-$42.8M) YoY -92.25% (-$88.2M)
(cusip57064N201)✕	1.5M	QoQ 0.00% (+0) YoY NEW(+1.5M)	All Managers (Combined)	$6.9M	0.4% ($6.9M/$1.6B)	QoQ +49.04% (+$2.3M) YoY NEW(+$6.9M)
MACOM Technology Solutions Holdings, Inc.(MTSIcusip55405Y100)	47.6K	QoQ +4.69% (-2.1K) YoY +4.69% (+2.1K)	All Managers (Combined)	$4.8M	0.3% ($4.8M/$1.6B)	QoQ -19.10% (-$1.1M) YoY +9.88% (+$430.3K)
A10 Networks, Inc.(ATENcusip002121101)	187.4K	QoQ +7.39% (-12.9K) YoY -95.19% (-3.7M)	All Managers (Combined)	$3.1M	0.2% ($3.1M/$1.6B)	QoQ -4.62% (-$148.6K) YoY -94.26% (-$50.4M)
8X8 INC /DE/(EGHTcusip282914100)	69.8K	QoQ NEW(+69.8K) YoY +31.97% (-16.9K)	All Managers (Combined)	$139.7K	0.0% ($139.7K/$1.6B)	QoQ NEW(+$139.7K) YoY -2.23% (-$3.2K)