The stock market’s September swoon continued last week on concerns about a slowing economic recovery and a lack of action in Washington for another stimulus package. Markets were on pace to extend their losing streak into a fourth week.

On Monday, electric truck maker Nikola’s popular chairman Trevor Milton resigned from his position following fraud allegations from short seller Hindenburg Research and reports of investigations by both the Securities and Exchange Commission and the Justice Department. Nikola’s share price dropped more than 40% during the week.

Shares of electric vehicle maker Tesla also dropped more than 10% last week after the company’s much-hyped Battery Day failed to live up to expectations. At the event, CEO Elon Musk said Tesla can produce a $25,000 fully autonomous EV “about three years from now,” but he did not reveal the so-called “million-mile battery” that many investors had anticipated.

A Nike store in