Shares of crypto asset manager and trading firm Huobi Tech, an affiliate of Huobi Global, one of the world's largest exchanges, fell more than 30% after the opening bell.

Huobi Global said on Sunday it had stopped taking new mainland customers https://www.reuters.com/world/china/cryptocurrency-exchange-huobi-clean-up-existing-mainland-clients-by-end-2021-2021-09-26 from Friday and would close accounts belonging to mainland-China based clients by the end of the year to comply with local regulations.

China's regulators intensified a crackdown https://www.reuters.com/world/china/cryptocurrency-exchange-huobi-clean-up-existing-mainland-clients-by-end-2021-2021-09-26 on Friday, banning cryptocurrency transactions and mining, and saying that overseas exchanges are barred from providing services to mainland investors via the internet and that mainland-China based employees of overseas crypto exchanges would be investigated.

OKG Technology Holdings Ltd, a fintech and construction company majority owned by Xu Mingxing the founder of cryptoexchange OK Coin, fell more than 20%.

However, cryptocurrencies traded firmly on Monday, having rebounded from selling driven by the Chinese crackdown as buy-the-dip speculators swooped in.

Bitcoin was up about 2.4% in Asia trade at $44,250, having fallen to just below $41,000 in the wake of Friday's announcement of a blanket ban on crypto mining and transactions in China - the most wide-ranging clampdown yet.

Rival token ether rose 3% to $3,163 and has recouped its Friday losses.

(Reporting by Tom Westbrook in Singapore and Alun John in Hong Kong; Editing by Muralikumar Anantharaman and Jacqueline Wong)