Stocks Tumble as Tech Giants Miss Earnings Targets
- Dow Jones futures rise after Amazon, Intel earnings; indexes tumble below 200-day lines
- Tech titans Meta, Alphabet, Nvidia, Apple plunge on growth concerns
- Treasury yields extend slide; oil prices sink again
- Bleak market breadth even with Nasdaq bounce; small-caps hit 52-week lows
- Investors must stay defensive, rebuild watchlists; await clear signs of strength
