Chart Master: One buy and one sell

Group 1: Roku - Roku has experienced significant volatility, characterized as a boom-bust cycle, with a critical price level at 110 [1] - The stock has seen a dramatic decline from 600 to 35, losing approximately 90% of its value, but has been stabilizing since then, indicating potential for higher prices [2] Group 2: Caterpillar - Caterpillar is currently trading significantly above its historical trend and the 150-day moving average, indicating strong performance [3] - Over the past 10 years, Caterpillar has outperformed the industrial sector by nearly four times and the S&P by almost three times since 1980 [4]