Hy,
so, I know how stock markets work everywhere in the world. Data come from Alpha V. The problem is the following:
e.g.: Apple price is during your plugin: 166,00 -7,28 -4,34% (Last trade on 02.02.2018)
Real closing data is 160,5 -7,28 -4,34%. (Not 166) Check: https://www.marketwatch.com/investing/stock/aapl
(166 was the opening data) Your plugin use the opening data instead of Friday’s end-of-day data. So, it is not fresh data as I wrote.
I don’t know whether this issue was caused by your plugin or the 3rd source.