The evidence provided by the sources overwhelmingly and consistently supports the statement. There is direct, quantitative confirmation from a highly authoritative source, Charles Schwab, which explicitly states that 'The S&P 500 is... up 17% for the year. The Nasdaq 100 is up 21% in 2025.' This is corroborated by multiple other high-authority news outlets. A Reuters report from late December 2025 confirms that U.S. equities were at 'record peaks,' and another report from the same source attributes a major hedge fund's success to the 'strong performance from the U.S. stock market' in 2025. Furthermore, the inclusion of primary data sources from MarketWatch and Investing.com for all three major U.S. indexes (S&P 500, DJIA, and NASDAQ Composite) reinforces the conclusion that the underlying data shows a year-to-date increase. There is no conflicting or contradictory evidence among the provided sources. The collective weight of specific performance figures and qualitative descriptions from credible financial institutions and news agencies makes the statement highly probable.