South Korean AI chip startup Rebellions said Monday it has raised $400 million as it looks to expand into the U.S. market ahead of a public listing. Mirae Asset Financial Group and the Korea National Growth Fund, an investment vehicle of the South Korean government, led the round, which values Rebellions at $2.34 billion. Rebellions is one of the many semiconductor startups looking to capitalize on demand for AI chips and investor appetite for companies that are fueling the build-out of