UPDATE: Clarkson Capital Downgrades Parker Drilling to Market Perform on US Rental Business Concerns

In a report published Friday, Clarkson Capital Markets analyst Todd P. Scholl downgraded the rating on Parker Drilling Company (NYSE: PKD ) from Outperform to Market Perform, and lowered the price target from $8.00 to $5.00. In the report, Scholl noted, “Parker Drilling shares are rated Market-Perform (previously Outperform) with