The market remains volatile and -- so far -- within its previous trading range, on a closing basis.

Last Monday, the COVID-19 vaccine news caused SP to gap up on Monday's open.That was the largest percentage gap to a new all-time high in history.

As traders know, there's an old adage to "sell the news," especially if there has been anticipatory buying before "the news." And they did, driving SP back inside its 3200-3600 trading range.

It still seems that a close above the highest prices reached in September -- would be an upside breakout and would have follow-through. So that is near-term resistance. A breakout to the upside would be worth following.