You can setup Spark to play a sound file everytime the price of any product moves up or down certain points. You can record a meaningful sound file e.g. "HSI rises" in the sound file.
If you like, you can have a different sound file for upward and downward movements and a different set of sound files for each product,e.g. one set for HSIV5 and another one for HHIV5.
Audio sound alert allows you to concentrate on your other businesses while you keep track of the market in case of any suddent market movements.
See next function of Spark: Live 1,5,15-Minutes Feed to Excel