Insufficient vs Inefficient: How Much Cash You Really Should Have on Hand

<p>Sometimes, having too much cash can feel like a 900-pound lead weight in the middle of your portfolio. Sometimes, it can feel like it's providing the buoyancy of half a blimp's worth of helium. Not having enough cash on hand can prove costly too and force you to have to sell at inopportune times. How much cash do you need to have on hand to make sure your portfolio is running smoothly and efficiently while allowing you to sleep at night?</p>