KPI:

We are using the currency rate and the stock conversion ratio as our two main KPI. We are interested to see how our KPI reacts over time in the different stock exchanges. 

Source:

https://finance.yahoo.com/world-indices

https://finance.yahoo.com/currencies

https://finance.yahoo.com/quote/%5EIXIC/history?p=%5EIXIC

https://finance.yahoo.com/currency-converter