本周两融余额增幅最大：润本股份两融余额：3.26亿元，余额增幅：147.62%；松井股份两融余额：1.25亿元，余额增幅：103.81%

Group 1 - The largest increase in margin financing balance this week was observed in Runben Co., with a margin balance of 326 million yuan, reflecting an increase of 147.62% [1] - Songjing Co. also saw significant growth in its margin financing balance, reaching 125 million yuan, with an increase of 103.81% [1]