10 things you need to know before the opening bell

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1. Police say the Boulder grocery-store shooter bought a gun 6 days before the shooting. Only 10 states in the US have a waiting-period law requiring time before a person can buy a gun.

2. A huge container ship has accidentally blocked the Suez Canal. Being one of the world's busiest maritime trade routes, the overnight block could have an impact on movement of oil and consumer goods.

3. Bitcoin gains 5% after Elon Musk says Tesla now accepts the cryptocurrency as payment. Musk said bitcoin payments made to Tesla will not be converted to fiat currency.

4. Robinhood has filed confidentially for a US IPO. The trading app has selected Nasdaq as the venue for its listing.

5. US tech stock futures rise as bond yields continue to fall. See what markets are doing today.

6. Earnings expected. Adobe and Markit are highlights.

7. On the data docket. Speeches from Fed Chairman Jerome Powell and New York Fed President John Williams, the IHS Markit US Purchasing Managers Index, and the EIA crude oil stocks change are due.

8. A fund manager who's returned 138% in the past year makes the case for mid-cap stocks as outperformers. Amy Zhang also shares 3 mid-cap stocks poised to surge as the economic reopening accelerates.

9. Morgan Stanley says the market is rewarding companies that announce spin-offs. The firm says to buy these 10 stocks that are poised to roar higher as M&A heats up.

10. We spoke to Ryan Jacob, who's in the top 1% of his investing peers. He shares the lessons learned by rebuilding his internet fund after the dot-com crash wiped out more than 90% of its value.