The total amount of money invested in this specific case/roundTo make it easier to process the data, write the amount like this:
1M EURO (DKK, USD etc.)
if you don't wish to disclose the exact amount then you can write:
Undisclosed
100K+ EURO (DKK, USD etc.)
1M+ EURO (DKK, USD etc.)10M+ EURO (DKK, USD etc.)
or in another way you find appropriate