Alexion Pharmaceuticals (ALXN) is up sharply Monday but this strength only looks temporary. Let's check out the charts and indicators.
In the updated daily bar chart of ALXN, below, we can see that the shares briefly broke below the rising 200-day moving average line. Trading volume does not look like it expanded much on the break of the moving average line so it must not be of concern to the holders of ALXN.
The 50-day moving average line looks like it is rolling over and the On-Balance-Volume (OBV) line has rolled over so far this month. A declining OBV line means that sellers of a stock have become more aggressive.
The trend-following Moving Average Convergence Divergence (MACD) oscillator has moved below the zero line for an outright sell signal.