10 things you need to know before the opening bell

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1. Trump may be facing impeachment for a second time and investors are nervous. Here is how the markets are reacting.

2. The crypto market has taken a tumble today. See what Bitcoin, Ethereum and the alt-coins are doing.

3. Here's 3 reasons why Bitcoin has doubled in less than a month - And why experts think it won't repeat its 2017 crash

4. Twitter has banned Trump permanently after the siege on the Capitol. Take a look at what its stock is doing.

5. 'Wildly overvalued'. This is what a former Wall Street chief strategist said about stocks and small caps in particular.

6. Earnings expected: No big-cap companies are reporting earnings today.

7. On the data docket: The Treasury will hold an auction for three- and six-month bills, as well as three-year notes.

8. The so-called 'dogs of the Dow' could deliver big returns in 2021, BofA says. The firm identifies 10 high-dividend stocks it thinks will trounce the market this year.

9. Investors are grappling with how to trade the new political environment. We spoke to 5 investing experts about how to capitalize on the Democratic sweep.

10. Bank of America says the warning signs that stocks are hurtling into bubble territory are growing. The firm pinpoints 6 that could signal a bear market is beginning.