Alphabet has lined up banks to sell a rare 100-year bond, stepping up a borrowing spree by Big Tech companies racing to fund their vast investments in artificial intelligence this year.

The so-called century bond will form part of a debut sterling issuance this week by Google’s parent company, according to people familiar with the matter. Alphabet was also selling $15bn of dollar bonds on Monday and lining up a Swiss franc bond sale, the people said.

Century bonds — long-term borrowing at its most extreme — are highly unusual, although a flurry were sold during the period of very low interest rates that followed the financial crisis, including by governments such as Austria and Argentina.

Here is more from the FT, let us see how the yield comes in…