While trading the QQQQ's in the last week, IB's BookTrader has seemed to move less smoothly than usual (maybe that's the market), but there has clearly been a lag in the unrealized P&L value keeping up.
And in BookTrader recently I've seen more old quotes left behind (still displaying) as the market moved past them than I've ever seen.
Maybe there is a glitch in the latest TWS release.
And in BookTrader recently I've seen more old quotes left behind (still displaying) as the market moved past them than I've ever seen.
Maybe there is a glitch in the latest TWS release.