Skip to content
Disclosery

SUMMIT PARTNERS L P

Follow

13F filer, CIK 830588, BOSTON, MA

SUMMIT PARTNERS L P reported $1,612,454,329 across 9 holdings for the quarter ended 2025-03-31, in a 13F-HR filed 2025-05-05.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0002053510-25-000002

Period
2025-03-31
Reported value
$1.61B
Holdings
9
Top 10 weight
100%
New
1
Sold out
0

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

How groups are built

Largest buys vs the previous quarter

SecurityShares changeApprox. value
MTSIadded+2,138$215K
ATENadded+12,903$211K
EGHTnew+69,842$140K

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.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
KVYOreduced-2,000,000-$60.5M

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, Q1 2025

Share positions as resolved from 13F-HR 0002053510-25-000002, largest first. % of portfolio is the value over $1,612,454,329, 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; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 46,427,778 shares; 2024Q4: 40,827,778 shares; 2025Q1: 38,827,778 shares 38,827,778$1.17B72.87%-2,000,000Timeline
LFSTLIFESTANCE HEALTH GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 41,932,358 shares; 2024Q4: 41,932,358 shares; 2025Q1: 41,932,358 shares 41,932,358$279M17.32%0Timeline
AKAA K A BRANDS HLDG CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 6,053,693 shares; 2024Q4: 6,053,693 shares; 2025Q1: 6,053,693 shares 6,053,693$81.6M5.06%0Timeline
JAMFJAMF HOLDING CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 4,475,381 shares; 2024Q4: 4,475,381 shares; 2025Q1: 4,475,381 shares 4,475,381$54.4M3.37%0Timeline
SOLO BRANDS INCSOLO BRANDS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 44,034,960 shares; 2024Q4: 44,034,960 shares; 2025Q1: 44,034,960 shares 44,034,960$7.4M0.46%0
MARKFORGED HLDG CORP EQUCOR…MARKFORGED HLDG CORP EQUCORP ACT …Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,473,154 shares; 2024Q4: 1,473,154 shares; 2025Q1: 1,473,154 shares 1,473,154$6.89M0.43%0
MTSIMACOM TECH SOLUTIONS HLDGS IQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 45,512 shares; 2024Q4: 45,512 shares; 2025Q1: 47,650 shares 47,650$4.78M0.3%+2,138Timeline
ATENA10 NETWORKS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 606,263 shares; 2024Q4: 174,464 shares; 2025Q1: 187,367 shares 187,367$3.06M0.19%+12,903Timeline
EGHT8X8 INC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 52,919 shares; 2024Q4: not reported; 2025Q1: 69,842 shares 69,842$140K0.01%newTimeline

How Q1 2025 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 0002053510-25-000002 base2025-05-05acceptance time not in the bulk data set