Use the same Stocks watchlist on your Mac, iPhone, and iPad
Use iCloud to view your Stocks watchlist on all your devices.
When you’re signed in with the same Apple ID on all your devices, and Stocks is selected in iCloud preferences, the watchlist from your current device appears on your other devices.
On your Mac, choose Apple menu > System Preferences, then click Apple ID.
Select iCloud in the sidebar.
Select Stocks in the list of apps.
To stop using iCloud with Stocks on your Mac, deselect Stocks in the list of apps.