I do not know Why BNB did such a rise yesterday. Maybe it is connected with new launchpad where cap is now 20k not 500usd and whales are buying?
That could be one of the reasons for the increasig price of BNB, but perhaps another reason is because there was news about the launch of a new Binance product. As soon as the announcement about Binance's new product was launched, BNB's price continued to grow.