Investors praise takeover offer, while bondholders worry about hike in leverage.

Investors praise takeover offer, while bondholders worry about hike in leverage.

Bubble-era financing method makes a comeback as concerns mount about corporate profits.

Bubble-era financing method makes a comeback as concerns mount about corporate profits.

Yield of 7.163% breaks record set in May 2011.

Acquisition of Dollar Thrifty to boost companys total debt by up to 28%.