The coronavirus crisis slammed the brakes on big mergers and acquisitions deals in March, with activity in the second quarter of 2020 slumping to an 11-year low of $485.3bn as company executives instead focused on stemming losses caused by the crisis. 

While Microsoft's potential TikTok takeover may be one of the most closely watched M&A transactions amid the pandemic, mega-deals have been making a comeback in recent months.