AI Stocks Command 45% of S&P 500, Reshape US Credit Markets
AI-linked stocks now make up 45% of the S&P 500 market cap, reshaping Wall Street. The credit market follows, with $1.4 trillion in AI-related debt.
AI isn't just a buzzword anymore. It's become the backbone of both the US equities and credit markets. As of now, AI-linked stocks account for a staggering 45% of the S&P 500's market cap. That's a leap of 20 percentage points since OpenAI unleashed ChatGPT in November 2022. This move isn't just big. It's rewriting capital flows on Wall Street.
And the credit side? Equally transformed. AI-tied investment-grade debt has reached a record 15.4%, up 3.5 points since 2020. Total AI-linked debt's hit an all-time high of $1.4 trillion. The hyperscalers, Amazon, Alphabet, Meta, Microsoft, and Oracle, have issued a whopping $121 billion in US corporate bonds in 2025 alone. To put it in perspective, they averaged only $28 billion annually between 2020 and 2024.
So, what's the catch? This AI-fueled dominance raises questions about sustainability. If AI can hold a wallet, who writes the risk model? The trajectory of AI adoption might dictate the global market's future course. But if AI falters, the reliance on this single theme could expose structural vulnerabilities. It's a high-stakes game now, reshaping global equity and credit leaders, with Taiwan overtaking the UK's stock market cap at $4.14 trillion, driven by AI in semiconductors.
Key Terms Explained
Debt securities where you lend money to a government or corporation in exchange for regular interest payments and your principal back at maturity.
Ownership stake in a company, represented as shares of stock.
A service that brings external data onto the blockchain.
Shares representing partial ownership in a company.