Investors are queuing up to finance Dell Inc.'s $67 billion acquisition of EMC Corp., with the computer maker poised to boost its offering for what's likely to be the year's second-biggest corporate bond sale.

The company had received more than $80 billion of orders from investors by the time its bankers closed the books on Tuesday, according to people familiar with the transaction who asked not to be identified because they aren't authorized to speak publicly. Dell had initially planned to raise about $16 billion. The company is weighing whether to increase the amount of debt it's raising in the investment-grade bond market, one person with knowledge of the matter said Monday.

Dell's bond sale may be the largest since Anheuser-Busch InBev NV sold $46 billion of bonds in January to finance its takeover of SABMiller Plc., and is expected to launch on Tuesday, said one of the people. The offering comes on the heels of the busiest week for bond sales by blue-chip companies in the U.S and Europe since January. Top-rated issuers sold about $74 billion in the five-day period ending May 13, according to data compiled by Bloomberg.