According to Compounding Quality, 2025 was an exceptional investing year, with the S&P 500 increasing by about 18% for the year, source: Compounding Quality on X, Dec 31, 2025. According to Compounding Quality, the author plans to share 10 crucial investment insights, though no sector-level or strategy details were provided in the post, source: Compounding Quality on X, Dec 31, 2025. According to Compounding Quality, the post does not reference cryptocurrencies or digital assets, source: Compounding Quality on X, Dec 31, 2025.