The US stock market now accounts for 67% of the MSCI All-Country World Index, reaching an all-time high. This share has doubled over the past 30 years, highlighting the dominance of US equities compared to other regions such as Europe (excluding the UK), emerging markets, and Japan, which collectively make up just 25% of the index. US stocks have also outperformed international stocks for 16 consecutive years, exceeding historical averages by over 3 standard deviations. Additionally, zero-day-to-expiration (0DTE) options trading has surged, with these contracts accounting for 51% of S&P 500 options volume in the fourth quarter and hitting a record 59% on a single trading day. Trading in 0DTE options on the CBOE $SPX index surpassed all other options for the first time. This marks a significant shift in the options market, reflecting increased use of these high-risk instruments. Retail investors also now represent 57% of total stock market trading volume, an all-time high, while off-exchange trading has risen by 20 percentage points since 2020, further emphasizing the growing influence of individual investors.