Dow slides more than 800 points as spiking Treasury yields and deficit fears spur a sell-off: Live updates CNBCDow sinks 800 points as bond market starts to freak out over Trump’s tax bill CNNStocks to Watch: Dow Closes 800 Points Lower; Treasury Yields Rise in Global Bond Selloff — Live Updates WSJStock market today: Dow, S&P 500, Nasdaq slide as bond yields surge, bitcoin hits record high Yahoo FinanceWall Street stocks tumble as worries mount about US debt Reuters