(Bloomberg) The US corporate-bond market is expected to see more than $50 billion of new debt sales this week from investment-grade companies, spurred by the continued pickup in mergers and acquisitions. Most Read from BloombergLargest Covid Vaccine Study Yet Finds Links to Health ConditionsCapital One to Buy Discover for $35 Billion in Year's Biggest Deal Your 401(k) Will Be Gone Within a DecadeAmazon Deserves to Be Called Out for Swindling UsersTech Giants Slide in Run-Up to Nvidia’s Result