Kenvue CEO Thibaut Mongon at the New York Stock Exchange for its initial public offering, May 4, 2023.Activist investor Starboard Value has a large stake in Kenvue, which spun out of Johnson & Johnson in mid-2023, according to people familiar with the matter.The activist is looking for the company to improve its share price, said the people, who requested anonymity to discuss private information freely. CNBC could not learn size of the stake nor Starboard's specific plans. Starboard's Jeff Smith is expected ...