Shares of Starbucks ($SBUX) were in the spotlight as the coffee chain said it would reverse its open-door policy that allows people to hang out at the coffee shop or use its restrooms even if they don't make a purchase,

The new rule comes as part of a push by Starbucks' new chairman and CEO, Brian Niccol, to reinvigorate the chain's sagging sales.

Starbucks' new purchase-required policy reverses the open door rule put in place after a store called police on Black men waiting for a meeting.