Key Takeaways

Tesla ( TSLA ) shares fell to open the week as part of a broader market decline that comes after Moody's Ratings downgraded its view of the United States' creditworthiness after markets closed on Friday.

Several other large tech stocks were down in early Monday trading (follow Investopedia's coverage of the day's market moves here ) after strong performances last week.

A Monday decline would also be a departure from Tesla's recent performance, as the electric vehicle maker's stock has ended the week higher than where it started in each of the last four weeks .

Upbeat news about macro events like trade negotiations with other countries has boosted Tesla stock along with the larger market in recent weeks, despite disappointing sales and registration figures coming out for Tesla across a number of European countries and China.

Tesla shares were down more than 2% in the first hour of Monday trading, and are still down some 16% since the start of the year.

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