Walmart has chosen Capital One Financial as the new issuer of its store credit card, ending a partnership with Synchrony Financial, the Wall Street Journal reported on Thursday, citing people familiar with the matter.

Shares of Synchrony Financial closed down 10 percent, at $30, while those of Capital One closed down 2 percent, at $96.83.

Under the deal, Capital One will issue credit cards that can only be used on Walmart’s website and in its stores, as well as co-branded cards that can be used almost anywhere else, the Journal reported.

Synchrony, which issues private-label cards as well as co-branded cards, has been Walmart’s exclusive credit-card issuer since 1999.

It was not immediately clear about the future of roughly $10 billion portfolio of Walmart card balances that Synchrony has, WSJ reported.

Walmart, Capital One and Synchrony were not immediately available for comment.