Chapter 11 companies continue to trade during bankruptcy,
others do not. If the company ultimately succeeds in reorganizing,
you may be able to exchange your old stocks or bonds for stocks
or bonds in the new company. But the new securities may be worth
less than your original investment -- or the bankruptcy court may
determine that stockholders don't get anything because the debtor
is insolvent.
A company also can file for bankruptcy under Chapter 7 if it intends
to stop all operations and go completely out of business. The bankruptcy
court will then appoint a trustee to liquidate the company's assets
to pay off the debt, which may include debts to creditors and investors.
But while bondholders sometimes get back a fraction of their investment,
the stock of a Chapter 7 company is generally worthless.
In most bankruptcy cases, the role of the SEC is rather limited.