SUMMIT PARTNERS L P - Stock Holdings in 13F Filings (SEC)

Updated on March 15, 2026.

Based on 13F Filings filed with the SEC on February 6, 2026, for the 2025 Q4 period, SUMMIT PARTNERS L P held in its portfolio 8 assets valued at $1,050,994,313 (i.e. $1.05B).

The most valuable assets in the portfolio included: KLAVIYO, INC. (2) ($612.15M), LIFESTANCE HEALTH GROUP INC. ($236.01M), and A K A BRANDS HLDG CORP (1) ($64.78M).

The chart below shows the top 8 valuable assets, and the table below shows the top 8 valuable assets.

You can see similar for other investment managers.

Related Topics: SEC Topic List.

Data Source: SEC.

Top Valuable Stocks in SUMMIT PARTNERS L P Portfolio

KLAVIYO, INC. (2)

LIFESTANCE HEALTH GROUP INC.

A K A BRANDS HLDG CORP (1)

AVEANNA HEALTHCARE HLDGS INC

JAMF HOLDINGS CORP

MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC.

SOLO BRANDS INC (3)

A10 NETWORKS, INC.

SUMMIT PARTNERS L P - Stock Holdings in 13F Filings (SEC)

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Name of Issuer	No. of Shares	Value ($)	Class
KLAVIYO, INC. (2)	18852778	612149702	COM SER A
LIFESTANCE HEALTH GROUP INC.	33524715	236013994	COM
A K A BRANDS HLDG CORP (1)	6053693	64774515	COM SHS
AVEANNA HEALTHCARE HLDGS INC	7551422	61695118	COM
JAMF HOLDINGS CORP	4475381	58224707	COM
MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC.	47650	8161492	COM
SOLO BRANDS INC (3)	1100870	6660264	COM CL A NEW
A10 NETWORKS, INC.	187367	3314522	COM