The size of your position can be a tough choice, and using formulas can help, but don't let theory fool you—stick to what's relevant and what you can control.
Can you calculate fear? Certain market measures help traders determine when the market seems “fearful.” Learn to do this for yourself to better evaluate risk.
Part of our series on portfolio margin, the greeks—theoretical metrics describing how things like stock price, time, and volatility can impact option price.
Overtrading can be a killer to your P/L. The trick is to trade consistently and always know what the markets—and your positions—are doing.
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