CNBC Daily Open: Biden drops out

This report is from today's CNBC Daily Open, our international markets newsletter. CNBC Daily Open brings investors up to speed on everything they need to know, no matter where they are. Like what you see? You can subscribe  here .

Biden drops out
President Joe Biden on Sunday quit the presidential race against Donald Trump and backed Vice President Kamala Harris as the nominee of the Democratic Party, bowing to pressure from his party members to drop out. Harris said in a statement, "I am honored to have the President's endorsement and my intention is to earn and win this nomination." You can read more on her next steps. Meanwhile, Republican lawmakers are calling on Biden to resign. What does this mean for markets? CNBC's Jesse Pound wrote that the "Trump trade" could stall. 

CrowdStrike failure
Nearly 8.5 million devices were affected by a faulty software update from cybersecurity firm CrowdStrike, triggering a global IT outage on Friday. The disruption impacted services across industries, including banking, health care, and airlines. Flights were grounded, and TV broadcasters went offline as businesses scrambled to address the ongoing issue. Delta Air Lines canceled 800 mainline flights on Sunday and offered more pay to crews as it struggles to recover. CrowdStrike's shares plunged 11% on Friday. You can read more on how a software update caused one of the world's biggest IT blackouts. And there's more from CNBC's coverage on how the next IT meltdown is already in the making. 

Biggest weekly losses
The S&P 500 and Nasdaq Composite posted their biggest weekly losses since April, sliding nearly 2% and 3.7%, respectively. The rotation out of mega-cap AI-related stocks and into cyclicals in anticipation of an interest rate