Anyone can buy a stock, says Alexander Green in InvestmentU.com. It’s knowing when to sell that’s the true art of investing. That is why using trailing stops is so important. They take the emotion out of investment decisions and use the realities of the market as a guide. This way, you won’t sell stocks on an uptrend, and small losses won’t turn into unacceptable losses. More from Alex…

The new ban by the Securities and Exchange Commission (SEC) on the naked short selling of 19 major financial firms sent banking stocks on a sharp rally after it was announced on July 15.

However, Sovereign Society Investment Director Eric Roseman says that by singling out 19 firms, the SEC has left hundreds more financial companies even more vulnerable. Washington Mutual (NYSE:WM), the largest US bank not included in the list, saw its share price plunge 35% last week.

Besides, poor financial supervision and weak government regulation created this mess in the banking sector, not short-selling hedge funds.