Megan Higgins, assistant director of client services at Adviser Investments, has the market analysis for Friday, May 17. StocksA financial instrument giving the holder a proportion of the ownership and earnings of a company. sold off in the final hour of trading for the week, with the Dow Jones Industrial Average down 0.4%, S&P 500 off 0.6% and the tech-heavy Nasdaq Composite slipping 1.0% for the day. Trade headlines cut positive and negative. The Trump administration reached an agreement with Canada and Mexico to lift tariffs on steel, putting our neighboring countries closer to a deal to replace NAFTA with the USMCA accord. On the flip side, the stalemate in U.S.-China trade talks continues to concern investors; in particular, John Deere saw its stockA financial instrument giving the holder a proportion of the ownership and earnings of a company. sell off after the company reported that U.S. farmers will likely spent $464 million less on harvesters and tractors due to low crop prices and curtailed sales to China.