Stop-Loss Order

The highest and lowest prices a security has traded at over the past year, used as a quick gauge of momentum and value.

Buying and selling of shares outside the regular exchange session, typically with thinner liquidity and wider spreads.

Profiting from a price difference for the same asset in two markets by buying in the cheaper one and selling in the dearer one.

Opening and closing positions within the same session to profit from intraday price moves.

An instruction to buy or sell only at a specified price or better, giving price control but no fill guarantee.

A broker's demand for additional funds when the equity in a leveraged account falls below the required minimum.