Broadcom slid 8.4% after the chipmaker warned of slimmer future margins on its AI system sales, despite projecting strong quarterly revenue. This sharpened worries about the profitability of surging AI investments.Other chip stocks, such as Advanced Micro Devices lost 1% and a broader chips index fell 1.5% a day after Shares of the cloud company fell 2.3% after logging their biggest daily drop since January in the previous session."Given the fact that 'Big Tech' has been at the vanguard of the rally since ...