That doesn't really help. Many symbols already have an artificially wide spread of 1 cent (they could have lower spreads if they were allowed to). Forcing sprea

That doesn't really help. Many symbols already have an artificially wide spread of 1 cent (they could have lower spreads if they were allowed to). Forcing spreads wider would reduce volume and increase per-trade profit for market makers (read: HFT). I'm not sure which factor would dominate, but it would be unlikely to have a big impact on the market makers' bottom lines. On the other hand, retail investors would enjoy the privilege of paying wider spreads,