Major US stock indexes finished trading with a moderate increase, mainly driven by the growth of shares in the industrial goods and basic goods sectors.

Meanwhile, the main topic on the market was still the situation around the memo of the former FBI head James Komi, in which he reported on the request of US President Donald Trump to stop the federal investigation into the connections between his former national security adviser Michael Flynn and Russia. Investors are concerned about the fact that the political scandal in Washington can prevent Trump from realizing his election promises, including the tax reform.

The cost of oil jumped by 2% on Friday, and headed for a second weekly increase in a row. The market is supported by the expectation that large oil exporters will nevertheless extend their agreement to reduce oil production in order to curb the constant oversaturation of oil reserves. Since the beginning of March, the price of Brent crude oil has dropped from more than $ 56 to less than $ 47, as investors' opinions ranged over whether the reduction in output by oil exporting countries and other producers compensates for the growth in production by the US.

Most components of the DOW index finished trading in positive territory (25 out of 30). Most fell shares of Cisco Systems, Inc. (CSCO, -0.48%). Caterpillar Inc. was the growth leader. (CAT, +2.13%).

All sectors of the S & P index recorded an increase. The leader of growth was the sector of basic materials (+1.6%).

At closing:

Dow + 0.69% 20,804.84 +141.82

Nasdaq + 0.47% 6.083.70 +28.57

S & P + 0.68% 2,381.73 +16.01