Over the past two months, Alibaba Group's market cap has been relatively stable within the range of $181.76 billion to $193.84 billion. However, PDD Holdings' market cap has shown more volatility, fluctuating between $191.91 billion and $217.27 billion. Overall, both companies have seen growth in market cap over the past two months, with Alibaba Group increasing by 6.7% and PDD Holdings increasing by 12.8%.