I just scoured the IB site and can't find a company address, although their career opportunity listing is in CT. I could swear I read somewhere that their servers are in the city. That would be great if they're not.
I think you will find that IBs servers would be located in a data center away from where their office is. Runningbear
Markets would be gone in the nuke or be halted immediately. And if not, you would be selling as would everyone else at terrible prices. Heck....why are we even talking about this!?! How depressing!?!
IB's main headquarters are in Greenwich, CT...I believe that is Timber Hill's corporate headquarters...Remember that IB is involved in almost every exchange worldwide, and they have local office locations as well...I am certain they have an office in Chicago that has oversight on their local operations on CME, CBOE, etc...
How about shorting the dollar on the spot forex market? that's decentralized, so it would never close. But what other currency would you pair it with?