According to media reports citing individuals with knowledge of the matter, Eli Lilly is in negotiations to acquire psychedelic drug manufacturer Atai Beckley Inc (ATAI.O), with a potential deal announcement possibly arriving as early as this week.

Shares of Atai Beckley Inc surged 66% in after-hours trading, while shares of Eli Lilly remained flat. Data shows that Atai Beckley Inc has gained 31% year-to-date, with a market capitalization of $1.97 billion as of Wednesday's close.

The report indicates that Eli Lilly is negotiating to acquire the company at a premium.