London (CNN Business) 1. Elon Musk vs. the SEC: Tesla CEO Elon Musk is in trouble again because of something he said on Twitter.

The US Securities and Exchange Commission on Monday asked a federal judge to hold Musk in contempt for violating a settlement deal reached with the powerful regulator last year.

The SEC said that Musk violated the agreement by tweeting inaccurate information about Tesla production levels on February 19 without first seeking approval from his lawyers.

Musk showed no signs of contrition, firing back at the SEC in a tweet that sought to explain away his actions. The CEO has previously disparaged the settlement and said he doesn't "respect" the SEC.

The episode is bound to raise more questions about the management of Tesla and Musk's leadership.

The billionaire stepped down as chairman of Tesla last year as part of the settlement agreed after the SEC accused him of misleading investors with tweets about taking the carmaker private.

Tesla also agreed to appoint two new independent directors to its board and establish a committee to oversee Musk's communications.

2. Oil markets: Crude oil prices stabilized on Tuesday after losing more than 3% in the previous trading session.

US crude oil futures slipped a little to around $55 per barrel. The price of Brent crude, the global benchmark, gained slightly to trade near $65.

Crude prices tanked on Monday after President Donald Trump called on OPEC to "take it easy."

"Oil prices getting too high," Trump said on Twitter . "OPEC, please relax and take it easy. World cannot take a price hike - fragile!"

3. Brexit moves: Two significant Brexit developments have pushed the pound well above $1.31 to its highest level in a month.

Media reports suggest that Prime Minister Theresa May is preparing to rule out the possibility of Britain leaving the European Union on March 29 without a deal to protect trade. If she's unable to win parliamentary approval for the divorce deal she negotiated, she would seek to delay Brexit instead.

The pound also got a boost after the country's main opposition party said it would back a second referendum if its Brexit proposals are rejected by parliament later this week.

Both moves should help reassure investors and companies that are worried about a disorderly Brexit. Kit Juckes, a currency strategist at Societe Generale, said the pound could strengthen to $1.40 if that outcome is avoided.

5. Earnings and economics: Investors will turn their attention on Tuesday to Capitol Hill, where Federal Reserve Chairman Jerome Powell is testifying before the Senate Banking Committee.

The US Census Bureau will release housing starts data for December at 8:30 a.m. ET.

Autozone AZO Home Depot HD JM Smucker SJM LendingTree TREE Macy's M Shutterstock SSTK Thomson Reuters TRI Papa John's PZZA TiVo TIVO andwill release earnings before the open.andwill follow after the close.

Investor expectations are high for the retailers. The US economy is strong and retailers make an outsized chunk of their sales during the holiday stretch.