Wall Street indexes trade down
U.S. dollar rises
Options imply share volatility for Nvidia earnings
Bitcoin hits new record high

NEW YORKLONDON, Nov 20 Reuters Global shares edged lower on Wednesday as markets weighed geopolitical tensions between Russia and the West and as investors eyed upcoming earnings from artificial intelligence powerhouse Nvidia, while bitcoin hit a new record high and the dollar rose.

Safehaven assets such as gold and government bonds got a lift on Tuesday after news of Ukraine launching U.S.made ATACMS missiles into Russia, and with Russia announcing it had lowered the threshold for nuclear action. Russian foreign minister Sergei Lavrov, however, later downplayed the nuclear threat, helping to calm markets.

Investors are also watching Presidentelect Donald Trump39;s pick for Treasury secretary, which may come as soon as Wednesday.

The MSCI AllWorld index was down 0.67 to 843.52, with European shares also dropping 0.1.

On Wall Street, all three main indexes were trading lower, driven by consumer discretionary, technology and communication services stocks. The Dow Jones Industrial Average fell 0.26 to 43,155.46, the SP 500 fell 0.75 to 5,872.66 and the Nasdaq Composite fell 1.11 to 18,775.83

Shares of Nvidia, the world39;s most valuable company, were down 2.2 ahead of its thirdquarter results due after the bell. The options market implies a move of almost 9 in either direction in the 3.6 trillion stock.

Markets were realizing that some…