The stock exchanges in New York opened lower on Tuesday. Trade is experiencing some headwinds due to uncertainty about a rapid interest rate step by the Federal Reserve. That’s why Wall Street investors are particularly looking forward to Fed President Jerome Powell’s appearances in US Congress later this week. Shortly after the opening bell, the Dow-Jones index was 0.3 percent lower at 26,721 points. The broader compiled S&P 500 index also lost 0.3 percent, to 2968 points. Nasdaq technology scholarship lost 0.2 percent on 8087 points. Powell appears Wednesday in the House of Representatives and a day later in the Senate. Investors hope that in his statements Powell will say something about a possible interest rate step through the umbrella of central banks in the United States. Financial markets are still counting on interest rate cuts later this month, although there is more uncertainty after Friday’s better-than-expected US job report. PepsiCo fell 0.2 percent in the first trading minutes. The soda and snack producer has come up with new results. PepsiCo maintained its objectives for the entire year. In addition, there was takeover news. The Cisco Systems network equipment manufacturer puts $ 2.6 billion on the table to acquire Acacia Communications, which is involved in fiber optic technology. Acacia’s share price rose by 35 percent, while Cisco recorded a plus of 0.4 percent.