Investors cautious as Treasury yields rise and major indices fluctuate.

US Treasury yields rose slightly as investors assessed the outlook for the economy and focused on the upcoming Federal Reserve meeting on June 14. Uncertainty about the Fed's interest rate policy has grown since the last meeting, at which it raised rates by 25 basis points but hinted that it may pause or entirely halt rate hikes imminently. Economic data published since the last meeting has fueled the debate, with some Fed officials indicating that they do not believe the rate hikes implemented so far have had the desired effect of bringing down inflation and cooling the economy.