AI-Driven Bull Market Hits 4-Year Mark

US stock market nears 4-year bull run fueled by AI spending but faces rising risks.

Oct 9, 2026

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AI-Driven Bull Market Hits 4-Year Mark

US stock market nears 4-year bull run fueled by AI spending but faces rising risks.

In brief

US stock market nears 4-year bull run fueled by AI spending but faces rising risks. The S&P 500 approaches its four-year bull market high driven by AI spending, with risks from Fed rate hikes and tech concentration. Originally reported by New York Post.

US Bull Market Nears 4-Year Anniversary

Traders working on the floor of the New York Stock Exchange.

The S&P 500 trades near record highs ahead of Oct 12, marking four years since the index’s closing low for this cycle.

AI Spending Powers Market Growth

Nvidia CEO Jensen Huang and Microsoft CEO Satya Nadella shake hands at a Windows event.

Corporate profit growth is lifted by AI expansion spending and a solid economic backdrop, driving investor optimism.

Bull Market Ranks Eighth Longest Since WWII

Federal Reserve Chair Kevin Warsh speaks at a press conference.

The current S&P 500 bull run ranks as the eighth-longest since World War Two, with an 117% gain.

AI Dominates Market Performance

The Wall Street Charging Bull stands nearly deserted on a city street, with no tourists crowding the statue for photos.

The launch of ChatGPT occurred about a month after the bull market began, with tech and AI stocks driving gains.

Nvidia Market Capitalization Soars

A street sign for Wall Street outside the New York Stock Exchange in New York City.

Nvidia’s market value has surged from $286 billion to $5.8 trillion since Oct 12, 2022, making it the world’s largest company.

Tech Concentration Risks Rise

Tech Concentration Risks Rise

The top 10 S&P 500 companies now weigh 40% of the index, up from 28% in October 2022, creating concentration risk.

Fed Rate Hikes Threaten Market Momentum

Rising US Treasury yields and Federal Reserve rate hikes could slow economic growth and trigger market volatility.

What matters most

The S&P 500 approaches its four-year bull market high driven by AI spending, with risks from Fed rate hikes and tech concentration.

Read the original on New York Post

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