From a capital-flow perspective: $ZRO falls below the 2 level
Large orders are usually clustered around key levels, and big players love to make moves in these areas: they may either push the price below a level to trigger long stop-losses, then buy it back up, or break through and drive the price lower. To tell which is happening, watch which way the large orders near the price are skewed.

Be aware of the risks and make your own decisions.