When Nicolas Darvas initially started trading in the market, he struggled a lot and made losses too. Later, after gaining experience he discovered his ‘Box Theory.’ He believed that the shares which move up and down the chart, move in a specific box pattern. Till the time the share is moving in a limited range, it is known as a box. When the share moves out of that limited range i.e. moves out of that box and increases along with increased volume then Nicholas added fundamentals to this technique and traded in such shares and he also made million dollars.