ChatGPT-Maker OpenAI Is Headed for a $1 Trillion IPO. The Biggest Winner Could Be Microsoft Stock.

The worst-performing "Magnificent Seven" stock of 2026 owns about a quarter of one of the biggest IPOs in the pipeline.

Bill Ackman Drives a Tesla: Here's Why He Won't Buy the Stock

Ackman explains the core of his investment philosophy rooted in the wisdom of Warren Buffett.