Merit Medical Systems said it expects second-quarter revenue of $380 million to $384 million, better than analysts’ forecasts of $372.5 million, and named Martha Aronson as chief executive and president. She will succeed Fred Lampropoulos, who founded the company in 1987 and has been chief executive since then.

Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies making news on Wall Street.

With shares down 21% year to date, Tesla ( TSLA 0.04%) is reeling from a combination of weakening electric vehicle (EV) demand, political uncertainty, and a CEO who seems to have misplaced priorities.