$NVDA $AAPL $AMZN $MSFT $GOOGL $GS — A $16 billion alert tied to Nvidia, Apple, Alphabet, Amazon and Microsoft sharpened focus on mega-cap concentration today, even as Goldman Sachs flagged depressed tech multiples (forward P/E near 18x) as selective entry points. A flood of Form 8-Ks — from Grayscale staking ETFs to small-cap governance changes — underlines a market balancing macro risk, idiosyncratic event risk and tactical opportunity.