1400 GMT - The recent rise in global bond yields poses a threat to companies' financial well-being, especially those with high levels of debt, RBC BlueBay Asset Management's Mark Dowding says in a note. Credit spreads have stayed fairly tight in recent months, failing to price in the risk from geopolitical conflicts and rising debt issuance, Dowding says. "We are witnessing pockets of overvaluation [in credit] at a time of increased leverage and greed for returns," he says. If companies continue to raise their debt supply, they risk facing deterioration in their financial positions, which could hurt corporate bonds' performance, he says.