Are you referring to forex? MBT is open for trading 24 hours with the exception of a couple of minutes at rollover (5pm EST) and a couple of minutes at maintenance (midnight EST)
Based on previous posts in this thread, it looks like IB has better liquidity than HotSpotFX retail, is it true?
I was surprised to hear this since HotSpot is an FX only broker and has HSFXi to back it up.
At the moment IB has more banks providing prices than Hotspot does, but Hotspot is in the process of adding another to their Retail platform which will increase the liquidity on all existing pairs as well as introduce some new ones.