I know there is the subset of pro investor/traders/CTAs out there who mainly look to collect premium -- Ansbacher types -- by writing options, generally on the SP (S&P 500) futures options, and sometimes on ZN (10-year Treasury) futures options. (Other option writing strategies, such as on equities and even indexes, tie up more margin than futures, generally. They also -- covered calls are an exception -- can't get utilized as much in IRAs.) Question: Why more of this ilk don't also employ option writing strategies on currency futures? The margins are low, premiums high, easy to hedge, spread and stop. Is there a technical reason? Are more options writers looking at this area?