Nvidia Adds $300 Billion in Market Value in Single Day Including After-Hours Gains

The assessment is based on multiple high-authority primary sources that directly and consistently support the statement. Specifically, a Bloomberg report states that Nvidia added a record $329 billion in market value on July 31, 2024, explicitly noting it was the first stock to gain over $300 billion in a single session. This is strongly corroborated by an Investopedia article, which reports a gain of $326 billion on the same day and also confirms it was the first time a U.S. company surpassed a $300 billion single-day gain. The minor difference between the reported figures ($329B vs $326B) is common in financial reporting and does not undermine the core claim that the gain exceeded $300 billion. Another highly credible source, Reuters, reported a separate, massive single-day gain of $277 billion in February 2024, which further establishes the plausibility of such an event. The remaining sources are either irrelevant (discussing future spending or potential swings), describe the opposite event (a loss), are fictional, or have very low authority (Reddit, LinkedIn). There is no credible evidence contradicting the claim. The convergence of evidence from top-tier financial news outlets makes the statement highly likely to be true.