Core Viewpoint - The current data center construction boom driven by AI is shifting funding sources from traditional equity financing to a growing and opaque "private credit" market, raising concerns about systemic risks similar to the 2008 financial crisis [1][3]. Group 1: Data Center Construction Boom - The capital expenditure of major tech companies in the U.S. has reached a record level, totaling $102.5 billion in the recent quarter, primarily driven by Meta, Google, Microsoft, and Amazon [3]. - AI-related capital expenditures have contributed more to U.S. economic growth than all consumer spending over the past two quarters [3]. - Current investments in AI infrastructure have surpassed the peak telecom investments of the late 1990s, with telecom capital expenditures reaching $120 billion in 2000, accounting for 1.2% of GDP at that time [6]. Group 2: Shift to Debt Financing - The growth rate of capital expenditures for tech giants has outpaced their cash flow growth, leading to an increased reliance on debt financing, particularly through private credit [7]. - Microsoft’s financing lease related to data centers has nearly tripled since 2023, indicating a significant rise in debt financing [7]. - Private credit is becoming a crucial funding source for the data center boom, with its scale rapidly expanding and becoming a significant part of the U.S. debt market [7][10]. Group 3: Systemic Risks and Financial Institutions - Banks are becoming increasingly exposed to private credit, with their loans to private credit companies rising from 1% in 2013 to 14% of total loans to non-bank financial institutions [12]. - The interconnectedness between banks and the private credit market poses potential risks, especially if there are unexpected defaults concentrated in the data center sector [12]. - Insurance companies, particularly life insurers, have significantly increased their exposure to below-investment-grade corporate debt, surpassing the scale of subprime mortgage-backed securities held in 2007 [13].