By Eric Rosenberg. Turn off the TV and teach your kids about money and the stock market, and let them buy shares or give them a stock gift card to engage them in a portfolio with a growing value. Profits and losses can be multiplied exponentially when using options and an uneducated trader might see a bankroll evaporate quickly. Best for Learning: Stash. Read full review. The Options Portfolio algorithm with automatically adjust your account to the Greek risk dimensions delta, theta, vega or gamma while factoring in commissions and decay.