how change of members and whales
the following figure shows that the both number of members and whales grew very fast first and then they reached a relatively constant value and the amount of changes decreases. number of members increased in first days of may while number of whales increased about 1 moth later. This means that the bank tokens was first trended by members. But the whales first wait and enter the market in the right time just before the BTC price growing up.