US tech giants, including Amazon, Alphabet, Nvidia, Meta, Oracle, and SpaceX, have raised approximately $182 billion through bond issuances this year, significantly surpassing the $13 billion raised in the same period last year. These funds are primarily allocated for infrastructure investments in artificial intelligence and data centers. Despite the substantial increase, market enthusiasm for these large bond offerings has waned, with Amazon's recent $25 billion bond deal being only 1.6 times subscribed. Concerns are emerging among institutions about the potential risks of continued heavy bond issuance by the tech and AI sectors. There is apprehension that this trend could lead to increased portfolio concentration and repricing risks, as evidenced by the weakening performance of SpaceX's $25 billion bonds in the secondary market compared to US Treasuries.