Erste Asset Management Boosts Stake in Sunrun

Investment firm increases ownership in solar energy company by over 60%

Published on Feb. 27, 2026

Got story updates? Submit your updates here. ›

Erste Asset Management GmbH, an investment management firm, has increased its stake in Sunrun Inc. (NASDAQ:RUN), a leading provider of residential solar energy systems in the United States. According to a recent SEC filing, Erste Asset Management raised its position in Sunrun by 62.7% in the third quarter, now owning approximately 3.08 million shares or 1.33% of the company's stock, valued at $54.78 million.

Why it matters

Sunrun's growth in the residential solar market has attracted increased investment interest, with Erste Asset Management's move signaling confidence in the company's long-term potential. As more consumers adopt rooftop solar, Sunrun's business model of providing flexible financing options has positioned it as a key player in the renewable energy transition.

The details

Erste Asset Management's increased stake in Sunrun was part of a broader trend of institutional investors boosting their positions in the solar company. In the same period, other hedge funds and institutional investors also modified their Sunrun holdings, with Royal Bank of Canada, Integrated Wealth Concepts LLC, and MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. among those adding to their positions.

  • Erste Asset Management GmbH raised its position in Sunrun in the third quarter of 2025.
  • The filing with the SEC disclosing the increased stake was made on February 27, 2026.

The players

Erste Asset Management GmbH

An investment management firm that has increased its stake in Sunrun Inc., a leading provider of residential solar energy systems in the United States.

Sunrun Inc.

A San Francisco-based company that designs, installs, and maintains rooftop solar panels and battery storage solutions for homeowners under flexible financing arrangements.

Got photos? Submit your photos here. ›

What they’re saying

“Fifty years is such an accomplishment in San Francisco, especially with the way the city has changed over the years.”

— Gordon Edgar, grocery employee (Instagram)

The takeaway

Erste Asset Management's increased investment in Sunrun reflects the growing institutional interest in the residential solar market, as more homeowners adopt rooftop solar systems and companies like Sunrun provide innovative financing options to drive adoption.