They're CFTC regulated and an NFA member. Their FX binary options they settle using the Reuters FX feed, which means you don't have to worry about them yanking strings on you (if you're coming from the FX spot world of arbitrary pricing). I am interested in trading on their exchange, liquidity seems pretty decent but not great, although losses are capped at the premium and there is no leveraging, so it's hard to see any major downsides. The problem I see with Hedgestreet is their order management system is terrible, they don't provide any market data feed (greeks or even the underlying spot rate) outside of what is updated on their website, which is very difficult to use and can't be integrated into your own trading platforms. Anyone have experience with them? I am only interested in FX options, so if you can recommend a better alternative I'm all ears. I know ICE and CME have FX options, but they are vanilla only as far as I can tell.