Skip to content
Disclosery

SUMMIT PARTNERS L P

Follow

13F filer, CIK 830588, BOSTON, MA

SUMMIT PARTNERS L P reported $608,921,882 across 5 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-07-30.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001172661-26-002948

Period
2026-06-30
Reported value
$609M
Holdings
5
Top 10 weight
100%
New
0
Sold out
2

Part of the filer group SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC

How groups are built

Largest buys vs the previous quarter

None.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
LFSTreduced-5,899,661-$63.2M
AVAHexited-5,451,422-$35.1M
MTSIreduced-43,268-$16.5M
SBDSexited-1,100,870-$4.14M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0001172661-26-002948, largest first. % of portfolio is the value over $608,921,882, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
KVYOKLAVIYO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 46,427,778 shares; 2024Q4: 40,827,778 shares; 2025Q1: 38,827,778 shares; 2025Q2: 30,827,778 shares; 2025Q3: 18,852,778 shares; 2025Q4: 18,852,778 shares; 2026Q1: 18,852,778 shares; 2026Q2: 18,852,778 shares 18,852,778$285M46.75%0Timeline
LFSTLIFESTANCE HEALTH GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 41,932,358 shares; 2024Q4: 41,932,358 shares; 2025Q1: 41,932,358 shares; 2025Q2: 41,932,358 shares; 2025Q3: 33,524,715 shares; 2025Q4: 33,524,715 shares; 2026Q1: 29,209,776 shares; 2026Q2: 23,310,115 shares 23,310,115$250M41%-5,899,661Timeline
AKAA K A BRANDS HLDG CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 6,053,693 shares; 2024Q4: 6,053,693 shares; 2025Q1: 6,053,693 shares; 2025Q2: 6,053,693 shares; 2025Q3: 6,053,693 shares; 2025Q4: 6,053,693 shares; 2026Q1: 6,053,693 shares; 2026Q2: 6,053,693 shares 6,053,693$64.8M10.65%0Timeline
ATENA10 NETWORKS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 606,263 shares; 2024Q4: 174,464 shares; 2025Q1: 187,367 shares; 2025Q2: 187,367 shares; 2025Q3: 187,367 shares; 2025Q4: 187,367 shares; 2026Q1: 200,065 shares; 2026Q2: 200,065 shares 200,065$7.47M1.23%0Timeline
MTSIMACOM TECH SOLUTIONS HLDGS IQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 45,512 shares; 2024Q4: 45,512 shares; 2025Q1: 47,650 shares; 2025Q2: 47,650 shares; 2025Q3: 47,650 shares; 2025Q4: 47,650 shares; 2026Q1: 49,273 shares; 2026Q2: 6,005 shares 6,005$2.28M0.38%-43,268Timeline

Sold out in Q2 2026

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
AVAHAVEANNA HEALTHCARE HLDGS INC5,451,422$35.1Mshares
SBDSSOLO BRANDS INC1,100,870$4.14Mshares

How Q2 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001172661-26-002948 base2026-07-30acceptance time not in the bulk data set

Filings

Every filing of this filer: 13F reports and notices, the 13D and 13G it filed or is a reporting person of, and Forms 3, 4 and 5 it reported as an owner.

FilingSubjectFiledAcceptedIngested
13F-HR 0001172661-26-002948 Quarter ended 2026-06-302026-07-30acceptance time not in the bulk data set
13F-HR 0001172661-26-001623 Quarter ended 2026-03-312026-05-08acceptance time not in the bulk data set
13F-HR 0000830588-26-000001 Quarter ended 2025-12-312026-02-06acceptance time not in the bulk data set
13F-HR 0000830588-25-000004 Quarter ended 2025-09-302025-11-04acceptance time not in the bulk data set
13F-HR/A 0000830588-25-000003 Quarter ended 2025-06-302025-11-04acceptance time not in the bulk data set
13F-HR 0000830588-25-000001 Quarter ended 2025-06-302025-07-16acceptance time not in the bulk data set
13F-HR 0002053510-25-000002 Quarter ended 2025-03-312025-05-05acceptance time not in the bulk data set
13F-HR 0001802661-25-000001 Quarter ended 2024-12-312025-02-04acceptance time not in the bulk data set
13F-HR 0001802661-24-000007 Quarter ended 2024-09-302024-10-31acceptance time not in the bulk data set
13F-HR 0002030134-24-000002 Quarter ended 2024-06-302024-07-18acceptance time not in the bulk data set
13F-HR 0001802661-24-000003 Quarter ended 2024-03-312024-05-15acceptance time not in the bulk data set
13F-HR 0001802661-24-000001 Quarter ended 2023-12-312024-01-12acceptance time not in the bulk data set
13F-HR 0001802661-23-000003 Quarter ended 2023-09-302023-10-24acceptance time not in the bulk data set
13F-HR 0001802661-23-000002 Quarter ended 2023-06-302023-07-21acceptance time not in the bulk data set
13F-HR 0001872871-23-000002 Quarter ended 2023-03-312023-04-20acceptance time not in the bulk data set
13F-HR 0001872871-23-000001 Quarter ended 2022-12-312023-02-13acceptance time not in the bulk data set
13F-HR 0001872871-22-000004 Quarter ended 2022-09-302022-11-04acceptance time not in the bulk data set
13F-HR 0001872871-22-000003 Quarter ended 2022-06-302022-07-26acceptance time not in the bulk data set
13F-HR 0001872871-22-000002 Quarter ended 2022-03-312022-05-11acceptance time not in the bulk data set
13F-HR 0001844002-22-000002 Quarter ended 2021-12-312022-02-09acceptance time not in the bulk data set
13F-HR 0001872871-21-000002 Quarter ended 2021-09-302021-11-12acceptance time not in the bulk data set
13F-HR 0001772461-21-000002 Quarter ended 2021-06-302021-07-26acceptance time not in the bulk data set
13F-HR 0001846731-21-000001 Quarter ended 2021-03-312021-04-23acceptance time not in the bulk data set
13F-HR 0001833306-21-000001 Quarter ended 2020-12-312021-02-03acceptance time not in the bulk data set
13F-HR 0001450701-20-000007 Quarter ended 2020-09-302020-11-12acceptance time not in the bulk data set
13F-HR 0001819335-20-000001 Quarter ended 2020-06-302020-08-07acceptance time not in the bulk data set
13F-HR 0000830588-20-000003 Quarter ended 2020-03-312020-04-21acceptance time not in the bulk data set
13F-HR 0000830588-20-000001 Quarter ended 2019-12-312020-02-05acceptance time not in the bulk data set
13F-HR 0000830588-19-000005 Quarter ended 2019-09-302019-10-22acceptance time not in the bulk data set
13F-HR 0000830588-19-000004 Quarter ended 2019-06-302019-08-01acceptance time not in the bulk data set
13F-HR 0000830588-19-000003 Quarter ended 2019-03-312019-05-13acceptance time not in the bulk data set
13F-HR 0000830588-19-000001 Quarter ended 2018-12-312019-02-11acceptance time not in the bulk data set
13F-HR 0000830588-18-000005 Quarter ended 2018-09-302018-10-25acceptance time not in the bulk data set
13F-HR 0000830588-18-000004 Quarter ended 2018-06-302018-07-13acceptance time not in the bulk data set
13F-HR 0000830588-18-000003 Quarter ended 2018-03-312018-04-17acceptance time not in the bulk data set
13F-HR 0000830588-18-000001 Quarter ended 2017-12-312018-02-09acceptance time not in the bulk data set
13F-HR 0000830588-17-000004 Quarter ended 2017-09-302017-10-24acceptance time not in the bulk data set
13F-HR 0000830588-17-000003 Quarter ended 2017-06-302017-07-25acceptance time not in the bulk data set
13F-HR 0000830588-17-000002 Quarter ended 2017-03-312017-05-02acceptance time not in the bulk data set
13F-HR 0000830588-17-000001 Quarter ended 2016-12-312017-01-30acceptance time not in the bulk data set
13F-HR 0000830588-16-000016 Quarter ended 2016-09-302016-11-10acceptance time not in the bulk data set
13F-HR/A 0000830588-16-000015 Quarter ended 2016-06-302016-11-10acceptance time not in the bulk data set
13F-HR 0000830588-16-000014 Quarter ended 2016-06-302016-07-12acceptance time not in the bulk data set
13F-HR 0000830588-16-000013 Quarter ended 2016-03-312016-04-15acceptance time not in the bulk data set
13F-HR 0000830588-16-000011 Quarter ended 2015-12-312016-01-15acceptance time not in the bulk data set
13F-HR 0000830588-15-000010 Quarter ended 2015-09-302015-11-03acceptance time not in the bulk data set
13F-HR 0000830588-15-000008 Quarter ended 2015-06-302015-07-07acceptance time not in the bulk data set
13F-HR 0000830588-15-000003 Quarter ended 2015-03-312015-04-08acceptance time not in the bulk data set
13F-HR 0000830588-15-000001 Quarter ended 2014-12-312015-02-02acceptance time not in the bulk data set
13F-HR 0000830588-14-000002 Quarter ended 2014-09-302014-10-21acceptance time not in the bulk data set
13F-HR 0000950123-14-007304 Quarter ended 2014-06-302014-07-22acceptance time not in the bulk data set
13F-HR 0000950123-14-003648 Quarter ended 2014-03-312014-04-08acceptance time not in the bulk data set
13F-HR 0000950123-14-000210 Quarter ended 2013-12-312014-01-14acceptance time not in the bulk data set
13F-HR 0000950123-13-008018 Quarter ended 2013-09-302013-10-22acceptance time not in the bulk data set
13F-HR/A 0000950123-13-007662 Quarter ended 2012-12-312013-10-01acceptance time not in the bulk data set
13F-HR 0000950123-13-005108 Quarter ended 2013-06-302013-07-30acceptance time not in the bulk data set