A rare beast is taking over the bond market

The appetite for corporate bonds has been soaring over the past few years, and companies are serving up entire feasts.
The number of "jumbo bonds," or bond offerings over $5 billion, has increased to its highest level ever, according to Edward Marrinan, the chief credit strategist at HSBC.
"Once rare, multi-billion, multi-tranche offerings have become commonplace in the corporate bond market," said Marrinan in a note to clients on Tuesday. "After reaching a record issuance of $330 bill