BUZZ — HK's Akeso rallies after AstraZeneca invests $2 billion in Summit, backs ivonescimab
* Shares of antibody drugs producer Akeso Inc jump 15.7% to HK$106.4, their biggest intraday pct gain since September 2024 * Stock hits its highest point since July 23 after falling for three consecutive sessions * Stock is top pct gainer in Hang Seng Biotech Index, which is up 1.3% * Summit Therapeutics said on Monday