KEY POINTS
  • MKM Partners analysts say some online ad companies such as Facebook and Snap will be more exposed to the impacts on mobile advertising due to Apple's privacy changes compared with other companies.
  • Apple's change is expected to dramatically impact the ability of advertisers to target ads the way they have been, since people likely won't opt in to letting apps track them.
  • Bank of America analysts said last month the changes could create a 3% revenue headwind for Facebook.
Apple CEO Tim Cook delivers a keynote during the European Union's privacy conference at the EU Parliament in Brussels, Belgium October 24, 2018.

As the industry prepares for Apple's change to settings on users' iPhones in the name of privacy, MKM Partners analysts said Tuesday some online ad companies such as Facebook and Snap will be more exposed to the impacts on mobile advertising than their peers. 

Apple's change will take a privacy option for users to share their advertising ID, or "IDFA," that was previously buried deep in users' phones and put it front and center when they open an app. Before using an app such as Facebook that tracks your data for targeted advertising, you'll be asked to enable the tracking. Companies such as Facebook fear Apple's notice will discourage people from enabling tracking, therefore limiting their ability to target ads, the core of their businesses.