TransAlta Corporation (TAC) is looking like an interesting pick from a technical perspective, as the company reached a key level of support. Recently, TAC's 50-day simple moving average crossed above its 200-day simple moving average, known as a "golden cross." A golden cross is a technical chart pattern that can signify a potential bullish breakout. It's formed from a crossover involving a security's short-term moving average breaking above a longer-term moving average, with the most common moving averages ...