Inversion Crackdown: Does It Spell The End For Pfizer/AstraZeneca?

Treasury’s initiative to reduce M&A motivated by tax avoidance could leave Pfizer in a lurch, without an attractive acquisition target to reenergize the big pharma’s long-term outlook. Other deals hang in the balance, most notably AbbVie’s $53.3 billion acquisition of Shire, already signed but not yet closed.