$ARK surged 8.4% in 24h with 6.9M volume, momentum 18, and a range position of 38, indicating it is moving toward the upper end of its range. $AT fell 12.6% despite higher volume and a 57 range position, while $YGG barely moved, low volatility and a 8 range position. $ARK โ€™s positive momentum and volume give it the strongest range expansion setup. Watch if the price stays above 0.27; a pullback could test the 0.25 support.