The daily PPS swings has nothing to do with bankruptcy and insolvency. If such were the case, then businesses who are not publically traded would also, according to such logic, become insolvent. The listing of shares on a major exchange does impact the company's ability to float debentures, securities, and various convertible notes, but it has nothing to do with the state of the firm's P&L, Balance Sheet, nor Cash Flow statements (other than an historical statement of shareholder equity).
For a firm to be bankrupt is a case when debt holders call in loans as a result of late (or non) payment according to terms or covenants or the inability of pay the current operating obligations from cash flow to vendors. I hardly think the company is at such a state, given the improving financials.