Alphabet (GOOGL.US) raised GBP1 billion through the issuance of century bonds on Tuesday (10th), with investor subscriptions reaching GBP9.5 billion. The bond's yield was approximately 6%, making it the most popular among the five types of GBP bonds issued by the company. Alphabet is the first major tech company to issue century bonds since the 1990s. Motorola and IBM (IBM.US) also conducted similar transactions back then, just before the dotcom bubble burst.Related NewsPPI MoM for Jan in United States is 0.5%, higher than the previous value of 0.4%. The forecast was 0.3%.Bill Blain, Principal of Wind Shift Capital, told CNBC that Alphabet's move resembles a peak signal, describing the current scale of AI financing as breaking historical records, while comparing it to a bubble era where investors blindly chase without prudently assessing risks. (Real-time Streaming US Stocks Quote; Except All OTC quotes are at least 15 minutes delayed.)