Trackers utilize a real-time, full-coverage Twitter stream from Gnip and begin collecting all new and future tweets in real time as soon as they are activated. When started, a new Tracker will start by backfilling with up to 5,000 tweets from the past 30 days, and then continue to gather tweets in real time moving forward. Twitter Trackers in our Social Suite will gather up to 20,000 tweets from the past 30 days.
If you need more older data, you can access this through Echo, which is available on the Social Suite. Through Echo, we have access to the entire Twitter archive. Contact us to talk about upgrading for this access.