Wall Street tries to reset debate on activism

Wall Street is hoping to reset the debate on US corporate governance following a wave of shareholder activism that has challenged many of the biggest companies. Since August, JPMorgan Chase chief executive Jamie Dimon has been working with leaders in finance and investing to hash out guidelines on best practices for corporate governance, according to people familiar with the talks. The initiative follows a rising wave of investor activism that has roiled numerous large companies, including JPMor