David Kostin, a US equities expert from Goldman Sachs Research, and Ryan Hammond from the portfolio strategy team discuss the remarkable 25% rally of the S&P 500 this year. They dive into the impact of mega-cap tech stocks and the potential for mid-cap equities. The duo also examines the cyclical phases of the AI industry, emphasizing key players like NVIDIA. Additionally, they share insights on the upcoming earnings season, investor sentiment, and projections for the S&P 500 leading up to 2025, reflecting optimism amid uncertainties.