It seems there could be no any specific regulations are made for spot fx funds, as mentioned several times on ET. However, not much details have been discussed about why. How could it be possible that running and investing spot fx funds would require no specific regulations? Is that because buying and selling currencies should be freely allowed to everyone? If there are some potentially applicable ones for regulations, what are they? Are there some well known spot fx funds we can look and check them. Your input would be appreciated. Thanks.