Tesla's electric vehicle sales are shrinking, but Cathie Wood and Ark Invest say there's a different reason to buy the stock.

Cathie Wood, chief of Ark Investment Management, frequently adjusts her top positions, adding to a holding when the stock falls and selling when it rises. Last week she did some notable buying. This week she was selling,

Wood (Mama Cathie to her followers) rocketed to fame after a stupendous return of 153% in 2020 and easy-to-understand explanations of her investment strategy in numerous media appearances.

Shopify stock makes up the largest position in Cathie Wood's portfolio. Cathie Wood has made a name for herself as a disruptive tech investor. She's not afraid to make risky moves, which makes it exciting to follow her portfolio.

If you follow Cathie Wood at all, you know the chief of Ark Investment Management loves to double down on her stock positions when they decline. And that’s exactly what she did this week. Investors and analysts are split in their opinions of Wood,