Stock price quotes do not update correctly. It is often necessary to go to the "communities" tab and then back to the "summary" tab to force an update.
Moreover, the display can randomly revert to prices from yesterday even though I have completely cleared my cache. Also, a correct price can be displayed but the increase or decrease displayed is from the close two days ago. In addition, a current price can be displayed with an old time.
Make sure that all three values: current price, time at which the current price applies and change since yesterday's close are all strictly linked and updated together. There should be no use of values stored in the user terminal cache.