CNBC Daily Open: Tech investors buy the dip — but debt remains a concern

Pedestrians outside the Nasdaq MarketSite in New York, US, on Friday, Oct. 16, 2026. Michael Nagle | Bloomberg | Getty ImagesHello, this is Hui Jie writing to you from Singapore. Welcome to another edition of CNBC's Daily Open.After a bruising week for the tech trade, investors seem to have came back into the sector, with the Nasdaq Composite rallying overnight. The optimism is cautious, with debt concerns still a key worry for a sector that has seen record bond issuance this year.What you need to know todayInvestors are once again piling into tech, after fears over AI financing, rising competition and possible excess chip supply in a few years drove them to cash out of the market last week.The Nasdaq Composite rebounded more than 1% on Monday, after sliding 4.5% last week and snapping a four-week winning streak.Intel advanced 2% after JPMorgan analysts upgraded their rating on the chipmaker. Advanced Micro Devices added 1.8%, and Micron Technology jumped about 3%.It was not a wholesale embrace of the sector, however. Funding concerns still loom, especially over neocloud companies. Shares of neocloud mainstay CoreWeave reversed course from earlier gains, falling 0.4%, even after re...