
Shares in US-listed education firm Chegg and London-listed textbook publisher Pearson tumbled today - each seeing roughly $1 billion (£803 million) knocked off its market cap - after the former warned that students were using ChatGPT instead of its services.
Chegg - which offers services including homework help, digital and physical textbook rentals, textbooks and online tutoring - published a trading update after markets in the US closed yesterday.