But after getting an initial impression of which direction a stock is trending you should always study the MACD (Moving Average Convergence-Divergence) graph.

The MACD graph (third graph from the top) has a fast line (the red one) and a slow signal (the blue line). The crossing of the red line over the blue can denote the beginning of a trend. The uptrend typically stops when the blue line crosses above the red.

Check out the green bars over the price graph. Now look at the MACD graph (third graph from the top). See how, each time the red line crosses over the blue, a green bar is born over the price graph? See how the price goes steadily up when this happens? (The green bar disappears when blue prevails over red.)

Did you notice where the centerline on the MACD graph (0.0) is in relation to the crossovers? Each time the two lines cross higher above the centerline, the uptrend gain more momentum, and the price rises with more intensity.