It’s a difficult market, and it wouldn’t be completely unthinkable when a market maker is forced to shut the doors altogether. On the other hand, MMX may feel themselves more comfortable trading outside the Eurozone. They are listed as market maker for almost a hundred single stock options in London (xls). Usually only with the ever present Timber Hill as company. Sometimes alone, lonely quoting in option classes such as Fresnillo and Barratt Developments – to name but a few. Odd.