Can a symbol be added to the SpotGamma HIRO Indicator? If you are interested in a symbol being added to the SpotGamma HIRO Indicator, please email firstname.lastname@example.org and we will add it to our priority list. SpotGamma Alpha subscribers can access the SpotGamma HIRO Indicator here. Related articles What does the sliding scale in the “HIRO Signal” column indicate? How often does the trending stock list update? What are the trending stocks listed? How do I add symbols to my HIRO watchlist? Where can I find the trending stocks listed?