Steps to reproduce:
At 9:26 AM, Pacific time, I search "u stock". I see yesterday's closing price, which is 36.04 USD +3.35 (+10.25%)
I should see the current price which is 33.50-2.54 (-7.05%).
Connected to: US-WEST
If this is working as intended (you intentionally only fetch the prices once at the end of each day) I would consider not showing the daily price delta, because that's basically meaningless the day after while the market is still open. If you show yesterday's closing prices with the delta over the last quarter, or with a graph of last quarter, that would be better.