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.
So you're saying that the CME and brokers other than IB are crazy for having such low margin requirements?
IB tends to have a higher margin requirement Other brokers might not offer this product due to its poor liquidity. No comment on CME margin requirement. they ought to have won delisted.
Current open interest is 1,162 contracts. I don't think they'll be delisting it anytime soon. BTW, I didn't say I'd be trading this. I'm just pointing out how IB has much higher margin requirements on this contract than the CME requires and other brokers offer (and this is true for most of the more thinly traded FX futures contracts).