* North Korea launched missiles–second test in less than a week
* AstraZeneca reports lower efficacy rate for vaccine in updated data
* Signs to monitor to determine if the US economy is at risk of overheating
* Ship still blocking Suez Canal for third day
* Supply chain disruptions expected to worsen shortages and raise prices
* End-of-quarter rebalancing activities in focus after sharp fall in bonds
* Is BlackRock too big to fail? Treasury Secretary Yellen responds
* Fidelity Investments preparing to launch bitcoin ETF
* Cold weather reportedly takes a bite out of US durable goods orders in February
* US economic growth remains solid in March via PMI survey data: