Market Uncertainty: Lack of Conviction on CNBC Daily Open

The US might avoid defaulting on its debt until at least the end of July, but Treasury Secretary Janet Yellen warned that the US could hit the debt ceiling in early June. US stocks fell slightly on Friday due to weak consumer sentiment data, while European markets closed higher. Linda Yaccarino will be Twitter's next CEO, according to Elon Musk. Turkey's presidential and parliamentary elections closed Sunday, with neither candidate expected to win outright. Bitcoin lost 11.25% last week, hitting a 2-month low of $25,843.