Grantham Mayo Van Otterloo & Co. LLC Sells Sunrun Shares

Investment firm reduces stake in renewable energy company Sunrun Inc.

Published on Mar. 8, 2026

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Grantham Mayo Van Otterloo & Co. LLC, a major institutional investor, has reduced its stake in Sunrun Inc. (NASDAQ:RUN) by 41.4% in the third quarter, according to a recent SEC filing. The firm now owns 6,226,026 shares of the energy company's stock, down from 10,617,456 shares previously.

Why it matters

Sunrun is a leading provider of residential solar energy systems in the United States, and institutional investors like Grantham Mayo Van Otterloo & Co. LLC play a significant role in the company's stock performance. This reduction in their stake could signal a shift in investor sentiment or portfolio rebalancing, which could impact Sunrun's stock price and future growth prospects.

The details

According to the SEC filing, Grantham Mayo Van Otterloo & Co. LLC sold 4,391,430 shares of Sunrun during the third quarter, reducing its ownership stake in the company from 2.68% to 1.57%. The investment firm cited unspecified reasons for the sale, which came amid a broader market downturn and increased volatility in the renewable energy sector.

  • Grantham Mayo Van Otterloo & Co. LLC reduced its stake in Sunrun during the third quarter of 2026.

The players

Grantham Mayo Van Otterloo & Co. LLC

A global investment management firm that oversees more than $71 billion in assets.

Sunrun Inc.

A leading provider of residential solar energy systems in the United States, headquartered in San Francisco, California.

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The takeaway

The reduction in Grantham Mayo Van Otterloo & Co. LLC's stake in Sunrun could signal broader shifts in investor sentiment towards renewable energy companies, which may impact Sunrun's stock price and future growth prospects. However, the company remains a major player in the residential solar market, and its long-term outlook will depend on factors such as policy support, technological advancements, and consumer adoption.