According to @StockMKTNewz, the combined market capitalization of the world’s 10 largest stocks is $25.16 trillion, down from $25.3 trillion last week, source: @StockMKTNewz (Sep 27, 2025). According to @StockMKTNewz, this equates to a $0.14 trillion week-over-week decline, approximately 0.55%, a precise top-of-market breadth gauge for traders monitoring mega-cap exposure, source: @StockMKTNewz (Sep 27, 2025).