The trending data is calculated based on information from the entire 1, 3, or 7-day period. The sentiment chart on this page, however, reflects the sentiment for each specific day. So, if the main page indicates a stock has a negative sentiment over the past 7 days, but the sentiment graph appears mostly positive, it likely means there was a single day with a large volume of negative mentions and votes, which lowered the overall 7-day sentiment for example.