$ATOM surged on heavy volume on the 15-minute chart, closing above the upper boundary of its previous four-hour range at $2.027.
Trading volume on the candle reached $740,000, nearly four times the prior average, with aggressive buying accounting for more than 60%.
If subsequent closes hold steadily above $2, the upward shift in the range will be confirmed; if the price quickly falls back below $2, beware of a short-term false breakout.