Brink's (BCO) stock plummeted 13.27% in pre-market trading on Friday, extending losses after the company announced a major acquisition.

The security and logistics provider said it will acquire NCR Atleos in a cash-and-stock deal valued at approximately $4 billion to $6.6 billion including debt. The acquisition combines two major players in the ATM business but has drawn negative investor reaction, with Brink's shares already falling 6% in after-hours trading following Thursday's announcement.

Market participants appear concerned about the cost and integration challenges of the deal, as well as potential dilution from the stock component of the transaction.