Who are the largest shareholders of Owens Corning?

The largest shareholders of Owens Corning, ticker OC, are primarily large institutional investors as it is a publicly traded Fortune 500 company with no single controlling shareholder. As of 2024-2026 filings, the top shareholders are major asset managers. Vanguard Group is typically the largest shareholder, owning around 11 to 13 percent of outstanding shares through its index funds and ETFs. BlackRock is usually second largest, owning around 9 to 11 percent through its iShares and active funds. State Street Corporation is another large holder with 5 to 7 percent. Other large institutional holders include Wellington Management, T. Rowe Price, JPMorgan Chase, and Dimensional Fund Advisors. These institutional investors hold Owens Corning through mutual funds, pension funds, and ETFs that track the S&P 500 and mid-cap indices. Insider ownership by executives and directors is relatively small, typically under 1 to 2 percent total, with CEO Brian Chambers owning several hundred thousand shares valued at tens of millions of dollars but not controlling. There is no founding family controlling stake since the company emerged from bankruptcy in 2006 with dispersed ownership. The company has about 100 million shares outstanding. Shareholder composition changes quarterly as institutions buy and sell, so for most current top holders you should check SEC 13F filings, Yahoo Finance, or Owens Corning investor relations. The broad institutional ownership reflects its status as a large-cap building materials stock.