Major US stock markets opened lower on Tuesday amid the release of Goldman Sachs Group Inc. and Morgan Stanley's quarterly reports, where both showed a drop in their net revenue. Morgan Stanley's shares rose by 4.83% at 9:50 am ET, whereas Goldman Sachs Group Inc. sunk by 2.22% at the same time.

Investors will also take on board activities at the World Economic Forum in Davos.

The Dow Jones lost 0.43% at the opening. The Nasdaq 100 fell 0.12%, as JD.com decreased by 4.95%. The S&P 500 remained flat. The euro was up by 0.43% against the dollar, selling for $1.08668 at 9:29 am ET.