Definitely, for every pump or dump in cryptocurrency, there is definitely a news behind it. This is the concept of traders fundamental analysis. BSV pump was aa a result of the US court granting rights to Craig Wright as the founder of bitcoin (Satoshi Nakamoto).
That's already old news to be honest, for sure someone is buying and that's why the price rise. There is surely less liquidity since it's not on kraken and binance anymore so it only takes "little" money for the price to move a lot.
I sincerely don't agree with you on this my friend (concerning liquidity and exchange). When Binance and Kraken delisted, it traded at $52 but BSV has done x2 since then with $400m trade volume. Currently, it trades excellently on these exchanges Huobi, OKEx, Poloniex, Bittrex, Bithumb, DigiFinex, Upbit, Kucoin, Bibox and so on
After Binance & Kraken delisting as a result i think there are no big dumping happen in BSV price 20$ reduced its very normal falling down from panic seller because of two big exchange delisting. But trading volume was very good like as previous history. Still i didn't heard there are any good news for BSV but how it's pump hardly, Definitely some one behind the scene.