Grantham Mayo Van Otterloo & Co. LLC Boosts Liberty Broadband Corporation Stake

The institutional investor increased its holdings in the broadband and cable company by 65% in the third quarter.

Published on Mar. 8, 2026

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Grantham Mayo Van Otterloo & Co. LLC, an institutional investor, raised its holdings in shares of Liberty Broadband Corporation (NASDAQ:LBRDK) by 65% during the third quarter, according to a recent 13F filing with the Securities and Exchange Commission (SEC). The firm now owns 633,246 shares of the company's stock, worth approximately $40.2 million.

Why it matters

Liberty Broadband is a major player in the broadband and cable industry, and the increased stake by Grantham Mayo Van Otterloo & Co. LLC suggests the firm sees growth potential in the company. The move also highlights the continued institutional interest in the broadband sector as more consumers rely on high-speed internet.

The details

According to the 13F filing, Grantham Mayo Van Otterloo & Co. LLC acquired an additional 249,411 shares of Liberty Broadband during the third quarter, bringing its total stake to 633,246 shares. This represents approximately 0.44% of Liberty Broadband's outstanding shares. The firm cited the company's strong market position and growth prospects as reasons for the increased investment.

  • Grantham Mayo Van Otterloo & Co. LLC filed the 13F report for the third quarter of 2026.

The players

Grantham Mayo Van Otterloo & Co. LLC

An institutional investment management firm that manages assets for clients such as pension funds, endowments, and foundations.

Liberty Broadband Corporation

A publicly traded holding company that invests in broadband and cable businesses, with a significant equity stake in Charter Communications, one of the largest cable and broadband providers in the United States.

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The takeaway

The increased stake by Grantham Mayo Van Otterloo & Co. LLC in Liberty Broadband Corporation suggests that the institutional investor sees strong growth potential in the broadband and cable industry, which continues to be an important sector as consumer demand for high-speed internet services grows.