SUMMIT PARTNERS L P

CIK

830588

City

BOSTON

State / Country

MA

Stock

KVYO — Klaviyo, Inc.

Top Portfolio Positions

7 positions · $856,247,272 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio	Open
LFST	LifeStance Health Group, Inc. Healthcare	58,419,552	$372,132,546	43.46%
KVYO	Klaviyo, Inc. Technology	18,852,778	$366,875,059	42.85%
AKA	A.K.A. Brands Holding Corp. Consumer Cyclical	6,053,693	$62,425,682	7.29%
AVAH	Aveanna Healthcare Holdings, Inc. Healthcare	5,451,422	$35,107,157	4.10%
MTSI	MACOM Technology Solutions Holdings, Inc. Technology	49,273	$10,942,055	1.28%
ATEN	A10 Networks, Inc. Technology	200,065	$4,625,502	0.54%
SBDS	Solo Brands, Inc. Consumer Cyclical	1,100,870	$4,139,271	0.48%

Portfolio Trend

25 quarters · across all stocks

Holdings in KVYO

Compact Export CSV

Shares Held

Position Value (USD)

14 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$366,875,059	18,852,778	0.0%	Shares	Sole	2026-05-08
2025-12-31	$612,149,701	18,852,778	0.0%	Shares	Sole	2026-02-06
2025-09-30	$522,033,422	18,852,778	0.0%	Shares	Sole	2025-11-13
2025-09-30	$522,033,422	18,852,778	-38.8%	Shares	Sole	2025-11-04
2025-06-30	$1,035,196,785	30,827,778	-20.6%	Shares	Sole	2025-11-04
2025-03-31	$1,174,928,562	38,827,778	0.0%	Shares	Sole	2025-05-05
2025-03-31	$1,174,928,562	38,827,778	-4.9%	Shares	Sole	2025-05-07
2024-12-31	$1,683,737,564	40,827,778	0.0%	Shares	Sole	2025-02-07
2024-12-31	$1,683,737,564	40,827,778	-12.1%	Shares	Sole	2025-02-04
2024-09-30	$1,642,614,785	46,427,778	-2.8%	Shares	Sole	2024-10-31
2024-06-30	$1,188,289,145	47,741,629	0.0%	Shares	Sole	2024-07-18
2024-03-31	$1,216,456,706	47,741,629	0.0%	Shares	Sole	2024-05-15
2023-12-31	$1,326,262,453	47,741,629	-3.6%	Shares	Sole	2024-01-12
2023-09-30	$1,708,162,171	49,511,947	—	Shares	Sole	2023-10-24
No 13F history on record for this holder in this stock.