There are some speculations in social media that there is a group of whales in FTX who are short selling bitcoin in FTX. The group is lead by Sam Trabucco of Alameda Research according to rumors.

In other exchanges, speculations of very big bid orders have been created by the whales of Bitfinex and the whales of Binance. The sources where to find the data for this might be from paid services, however, if anyone has the resources, please share them hehe.