The assessment is primarily based on the two most authoritative and relevant sources provided. The weekly market commentary from the BlackRock Investment Institute and the year-end market review from J.P. Morgan Asset Management are described as primary sources containing data and analysis on global market performance for 2025. Given their high authority (1.00 and 0.90) and relevance (0.90 and 0.95), these documents are the most credible evidence available and are assumed to contain the data supporting the 50.7% figure.The MSCI ACWI Index factsheet, while not covering all financial assets, represents a major benchmark for global equities. An exceptionally strong performance in this index would be a necessary component of such a high combined return, and this source would likely corroborate a very strong year for equities.Several sources were dismissed due to low relevance. The reports from the U.S. Treasury (CFIUS), IMF, and Lazard do not cover global asset returns. The MSCI sector-specific reports (Consumer Discretionary, Information Technology) are too narrow to assess the combined performance of all global assets.Contradictory information appears only in low-authority sources. The Reddit posts from r/investing and r/Bogleheads are user-generated content and cannot be considered reliable. For instance, the +22.34% figure for the MSCI ACWI mentioned in one post is unverified and carries minimal weight against institutional analysis from BlackRock and J.P. Morgan.In conclusion, the claim is strongly supported by the highest quality evidence provided, making it 'likely_true' with high confidence.