Sorry if this is the wrong forum. So I'm gonna sign a margin agreement with Scottrade, but I'm looking it over, and I have a few questions. What exactly does that mean? Does that mean I need to keep in my account at least 50% of the market value? So if I short $10k worth of a stock I have to still have at least $5k unused (cash) in my account? What is a maintenance level? Does that mean if I short $10k worth of a stock I have to have at least $14k in cash in my account? Same question about "what is maintenance requirement?" And what happens if I short a stock at $15 and it falls to under $12.50, do the requirements change? Does using margin and shorting stocks change anything at tax time? I'm really only signing this so I can short stocks, not so I can use leverage. So say I have $20k in my account. This will give me $40k buying power. Can I still use only the $20k so I'm not using any leverage? Like can I specify to buy/short stocks only from my original $20k contribution without touching the leverage? Thanks.