Even a swing trade can produce a powerful gain. Especially when a winner comes with a larger position size. But how do you know when to go bigger? Tesla stock gives an example of how the decision can play out. Move Above 200-Day Line Puts Tesla Stock In PlayAfter skirting around its 200-day line for a few months, Tesla (TSLA) finally seemed to lift strongly (1). There were a couple of final tests at the 200-day and 50-day line (2) and some attempts to get a foothold we took small losses. But we didn't give ...