We're pausing our live updates for now but will be back with more soon. Before we go, here's a summary of the main developments today: Trump warns Putin he's 'playing with fire' ...

The P/B ratio shows how a stock's market price compares to its book value. It helps gauge whether a stock is undervalued or overvalued relative to its net assets.

The P/B ratio shows how a stock's market price compares to its book value. It helps gauge whether a stock is undervalued or overvalued relative to its net assets.