Why does my chart not show a price change when a dividend is paid?

Market Alert Pro applies a calculation to the historical price on the dividend payment date to adjust the pre dividend price to avoid a gap when a dividend is paid. Some vendors do not do this. We adjust the price to avoid a trailing or other trade stop being triggered by a price gap caused by a dividend payment. This means the price on the chart prior to the dividend payment may not agree with charts from other vendors. The calculation follows:

A stock closes at $100.00 today and opens ex-dividend the next day. The dividend is $5. If the stock price does not change due to trading, the post dividend price will be $95.00. This means there will be a $5 price gap in the chart.

The math is $100(at the close)-$5 = $95(on the open the next day). Divide $95 by $100, and the result is 0.95 or $95.

We then multiply historical prices that appear before the dividend by 0.95. Doing this adjusts the pre-dividend prices to align them with the prices post the dividend adjustment.