国盾量子获融资买入0.55亿元，近三日累计买入2.00亿元

Group 1 - The core point of the article highlights the trading activity of GuoDun Quantum, which had a financing buy-in amount of 0.55 billion yuan on August 21, ranking 493rd in the market [1] - Over the last three trading days from August 19 to August 21, GuoDun Quantum received financing buy-ins of 0.80 billion yuan, 0.64 billion yuan, and 0.55 billion yuan respectively [1] - On the same day, the company had a financing repayment amount of 0.61 billion yuan, resulting in a net sell-off of 5.8755 million yuan [1] Group 2 - In terms of securities lending, GuoDun Quantum had a securities lending sell-off of 0.15 thousand shares, with a net sell-off of 0.15 thousand shares on that day [1]