Corporate America has now had nearly a full year to adjust to new rules that radically changed how mergers and acquisitions are accounted for. It’s been a bumpy ride, and at least some companies have found themselves stuck in valuation sinkholes.

Corporate America has now had nearly a full year to adjust to new rules that radically changed how mergers and acquisitions are accounted for. It’s been a bumpy ride, and at least some companies have found themselves stuck in valuation sinkholes.