Sorapop/iStock via Getty Images Co-authored by Treading Softly. Investors today have a much shorter holding in the history of the financial markets. There are many things encouraging someone to be a momentum or swing trader: someone who does not hold for long periods and rapidly buys or sells based on the emotions of the moment, or the fears that govern their concerns about capital preservation. Most brokers offer commission-free trades, and those bright-green or bright red colors next to your holdings  ...