CHICAGO, April 17, 2015 /PRNewswire/ — InvestorsObserver issues critical PriceWatch Alerts for TSLA, AA, HAL, ACHN and AMZN. To see what our analysts have discovered about a particular stock, read the InvestorsObserver’s PriceWatch Alert by selecting the corresponding link. (Note: You may have to copy this link into your browser then press the [ENTER] key.) TSLA:…