Asian stock markets fluctuate after mixed tech results

Samsung's 783 percent surge in third-quarter operating profit was not enough to cheer investors (Philip FONG) Tech firms diverged Thursday with a mixed bag of results for some of the AI sector's big beasts tempering the recent spurt of optimism amid growing anxiety about companies' investment and debt. Markets enjoyed a healthy run-up in the previous two days as traders welcomed strong reports from South Korean chip titan SK hynix and a highly impressive IPO filing from Claude-creator Anthropic. That helped steady nerves among investors who have started to question the vast sums pumped into the AI build-out and when they will see returns, with the spike in borrowing costs compounding concerns.