Credit default swaps are derivatives that function like insurance on bonds, paying out if a borrower fails to meet its debt obligations. Rising CDS spreads signal that investors see higher risk.

An upbeat second-quarter earnings report from Oracle wasn’t enough to shake off the artificial-intelligence jitters that have crept into the stock. Oracle ORCL cleared the bar set by Wall Street on ...

Three months ago, Oracle Corp.’s scorching earnings outlook sent the shares soaring to their best day in three decades. But a quarter later, things look very different for the database software maker ...