We've chosen to take a look at Arbitron Inc (NYSE:ARB) because today's bullish price action caused the stock to bounce off the support of a nine-month trendline. As you can see from the chart below, the ascending trendline has propped up the price several times in the past and we'd expect that this time it will be no different. Technical traders will hold a bullish outlook on this stock until the price closes below trendline. We've also noticed that the price is testing the previous swing high that was created in April (shown by the horizontal line). This level will likely provide additional support when the bears try to send the price lower again.