I usually follow Coin Gecko. It shows sharp fluctuations in the price of HBD during the recent dip.

This is the chart from Coin Gecko.

This is the chart from CoinMarket Cap:

They both show fluctuations.

Since one can convert between HBD and HIVE the charts really just reflect the the conversions.

To really figure out what is going on, I would need to figure out how to parse the blockchain and follow conversions.

What I usually do is just follow the reported market cap on the Ausbit page. The reported market cap of HBD has fallen about two million HBD during the last dip. Unfortunately, I don't know a chart that shows the market cap.