Chesapeake (CHK +4.6%) tops the S&P leader board after its decision to replace four...

Chesapeake (CHK +4.6%) tops the S&P leader board after its decision to replace four directors, as investors agree with a Robert W. Baird analysis that the move "will go a long way in addressing the market's lack of confidence around Chesapeake's corporate governance and likely usher in a new culture of increased conservatism."