what sort of chart are you using? i've noticed small increment tick and volume and range charts will do that if the volume is heavy.
Never used to ... sometimes on high vol days, but today's been jumpier than usual, and it's nowhere like a fed day in terms of volatility. We'll see.
The videos I posted explain what is the real situation I will reiterate soon my rating to OEC if they will not change things OEC feed is pure JUNK!!
Are you seriously complaining about a data feed in your demo account!? That's one of the funniest things I have read on here in a while.
oec demo feed has always lagged compared to the live program, they don't want to waste bandwidth on the demo accounts, makes sense.