Please consider How Fed's Bailout Changed Everything.

This was no secret on Wall Street. Surgery Partners's majority owner, the buyout firm Bain Capital, had loaded so much debt onto the company's books that when it went to the market last year to refinance maturing bonds, investors demanded a 10% interest rate to compensate them for the risk. The debt was rated CCC -- eight levels below investment grade.

So by late March, with the economic effects of the outbreak in full force, frantic investors braced for default, pushing the price of those bonds below 55 cents on the dollar.

But then the Federal Reserve did something it had never done before. It pledged to buy risky corporate debt as part of its emergency financing package for the economy. The move was so aggressive and sparked a rally that was so powerful and broad-based that today those bonds are all the way back up near par value, and Surgery Partners was able to raise another $120 million from loan investors earlier this month.