The oil companys bonds have returned 3.9% since hedge fund manager Singer convinced it to divest some assets.

Company raises funds for an expansion of its wireless network.

Company raises funds for an expansion of its wireless network.

Largest corporate bond sale on record helps company avoid repatriation taxes.

Largest corporate bond sale on record helps company avoid repatriation taxes.

Companys first offering since 1996 could total as much as $20 bln, trader says.

Companys first offering since 1996 could total as much as $20 bln, trader says.

Company seen trying to beat Apple to market.