Maybe someone remembers or can check his data and enlighten me: what used to be the usual bid-ask spread in the FDAX (DAX futures) and Z (FTSI futures) a few years ago, say in 2004?
Is it possible that this average spread changed from slightly over 1 tick (0.5 points) back then to almost 2 ticks (a whole point) nowadays?
Is it possible that this average spread changed from slightly over 1 tick (0.5 points) back then to almost 2 ticks (a whole point) nowadays?