JPMorgan Chase is expanding equity research to cover private companies, starting with OpenAI. This move reflects the rise of private sector influence. Median age for private companies going public has increased to 10.7 years. Private equity and venture capital funding is surging, with $18.7 trillion in private markets. Understanding private markets is crucial for investors. Jamie Dimon warns of diminishing publicly traded companies in the US.

Read more at Yahoo Finance: JPMorgan pushes into private company coverage as Wall Street eyes growing opportunity