Summit Partners L P has filed its 13F-HR report for the quarter ending September 30, 2026. This filing is significant as it reveals the firm’s investment holdings, showcasing its strategic positions in various companies.

Summit Partners, based in Boston, is known for its private equity and venture capital investments. The firm focuses on growth equity investments in technology, healthcare, and other sectors, making it a key player in the investment landscape.

According to the latest filing, Summit Partners reported total holdings valued at approximately $490.9 million. The report includes significant investments in several companies:

A K A Brands Holding Corp: 6,053,693 shares valued at $65,864,180

Klaviyo Inc: 13,852,778 shares valued at $217,904,198

LifeStance Health Group Inc: 16,623,824 shares valued at $199,984,603

A10 Networks Inc: 200,065 shares valued at $5,423,762

MACOM Technology Solutions Holdings Inc: 6,005 shares valued at $1,710,344

The filing also notes that the total shares reported for A K A Brands Holding Corp reflect shares held through a holding company controlled by Summit. It highlights that the total proceeds related to these shares may be lower than the reported value at liquidation.

This update may affect stakeholders in the companies mentioned, especially as investors and analysts look for insights into Summit Partners' strategies and market outlook. The report indicates the firm’s continued focus on sectors like technology and healthcare, which are pivotal in the current economic environment.

As for what’s next, the filing does not specify any upcoming actions or changes. Investors and market watchers will be keen to see how Summit Partners' strategies evolve in response to market dynamics.