Tax inversion anyone? A year in M&A By: CNBC.com News December 29, 2014 at 01:20 AM EST Mergers and acquisitions broke a seven-year losing streak in 2014, with $3.48 trillion worth of deals. CNBC looks at some of the year's highlights. Read More >> Related Stocks: AbbVie Actavis Plc Astrazeneca Plc ADR Barclays Plc ADR Goldman Sachs Group Heidelberg Materials Ag Hewlett-Packard JPMorgan Chase & Co Kinder Morgan Morgan Stanley Pfizer Shire Plc Ads eBay