Kevin Horner of Charles Schwab talks about how the S&P 500 (SPX) is "dancing" on the 20-day SMA into Nvidia (NVDA) earnings. He says it signals a chance for bulls to capture 8,000 in the near-future, or for bears to pull the index down to strong support. He turns to the "fish hook" pattern forming in Marvell (MRVL) ahead of its earnings and Motorola Solutions' (MSI) strong resistance.