Hi @brendapalg - there is no bias at all with regards to the order in which Tweets are returned. Tweets are always returned in reverse chronological order. So the first page of results will show the most recent Tweets that match the query and then you can use pagination to paginate through all the Tweets until you reach the first Tweet posted after the fromDate specified in your query.
If you’re seeing higher volumes of recent Tweets, that could simply indicate that the conversation surrounding Basel III reforms on Twitter have increased over time?