Korean Won Futures maintenance margin
CME: $2,500 https://www.cmegroup.com/markets/fx/emerging-market/korean-won.margins.html
Cannon Trading: $2,500 https://www.e-futures.com/margin-requirements.php
Interactive Brokers: $18,500 https://www.interactivebrokers.com/en/index.php?f=26662
Now the Won has very low volume and sometimes doesn't even trade. But the bid-ask spread is usually pretty tight. Does Interactive Brokers really need to protect against a 17% move in the Won-Dollar exchange rate?
volume is virtually zero.
If you trade it, you might be the only one in the world trading CME won.
so it makes sense for IB to increase the margin requirement.