"The key reason for out exit from Sterling Tools is deterioration in its accounting score under the Marcellus' proprietary forensic accounting model, triggered by below-par scores on the following ratios: (i) growth in auditor's remuneration relative to revenues; (ii) contingent liabilities as a percentage of net worth; (iii) miscellaneous expenses as a percentage of total revenues; and (iv) yield on cash and cash equivalents," Marcellus said.