03/18/2010 05:12 am ET Updated May 25, 2011

Health Insurance Stocks Down As Prospects For Reform Rise

Health insurance stocks took a dive Tuesday, with the S&P Health Care Sector index becoming the worst-performing segment of the S&P 500, largely because of health insurance companies.

That followed a public declaration of war by the health insurance industry's lobbying arm against the White House's health care reform efforts.

Read more on ABC News